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| * | powerpc/boot: Handle allocation failure in simple_realloc()Li zeming2024-03-031-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | simple_malloc() will return NULL when there is not enough memory left. Check pointer 'new' before using it to copy the old data. Signed-off-by: Li zeming <zeming@nfschina.com> [mpe: Reword subject, use change log from Christophe] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20221219021816.3012-1-zeming@nfschina.com
| * | powerpc/pseries: Fix potential memleak in papr_get_attr()Qiheng Lin2024-03-031-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | `buf` is allocated in papr_get_attr(), and krealloc() of `buf` could fail. We need to free the original `buf` in the case of failure. Fixes: 3c14b73454cf ("powerpc/pseries: Interface to represent PAPR firmware attributes") Signed-off-by: Qiheng Lin <linqiheng@huawei.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20221208133449.16284-1-linqiheng@huawei.com
| * | powerpc/32: Curb objtool unannotated intra-function call warningSathvika Vasireddy2024-03-031-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | objtool throws the following warning: arch/powerpc/kexec/relocate_32.o: warning: objtool: .text+0x2bc: unannotated intra-function call Fix this warning by annotating intra-function call, using ANNOTATE_INTRA_FUNCTION_CALL macro, to indicate that the branch target is valid. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Sathvika Vasireddy <sv@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20221215115258.80810-1-sv@linux.ibm.com
| * | powerpc/32: fix ADB_CUDA kconfig warningMichael Ellerman2024-03-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix a (randconfig) kconfig warning by correcting the select statement: WARNING: unmet direct dependencies detected for ADB_CUDA Depends on [n]: MACINTOSH_DRIVERS [=n] && (ADB [=n] || PPC_PMAC [=y]) && !PPC_PMAC64 [=n] Selected by [y]: - PPC_PMAC [=y] && PPC_BOOK3S [=y] && CPU_BIG_ENDIAN [=y] && POWER_RESET [=y] && PPC32 [=y] The PPC32 isn't needed because ADB depends on (PPC_PMAC && PPC32). Fixes: a3ef2fef198c ("powerpc/32: Add dependencies of POWER_RESET for pmac32") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Tested: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240211221623.31112-1-rdunlap@infradead.org
| * | powerpc: Enable support for 32 bit MSI-X vectorsBrian King2024-03-031-3/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some devices are not capable of addressing 64 bits via DMA, which includes MSI-X vectors. This allows us to ensure these devices use MSI-X vectors in 32 bit space. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240117214632.134539-1-brking@linux.vnet.ibm.com
| * | powerpc: Don't ignore errors from set_memory_{n}p() in __kernel_map_pages()Christophe Leroy2024-03-033-5/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | set_memory_p() and set_memory_np() can fail. As mentioned in linux/mm.h: /* * To support DEBUG_PAGEALLOC architecture must ensure that * __kernel_map_pages() never fails */ So panic in case set_memory_p() or set_memory_np() fail in __kernel_map_pages(). Link: https://github.com/KSPP/linux/issues/7 Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20ef75884aa6a636e8298736f3d1056b0793d3d9.1708078640.git.christophe.leroy@csgroup.eu
| * | powerpc: Refactor __kernel_map_pages()Christophe Leroy2024-03-037-43/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | __kernel_map_pages() is almost identical for PPC32 and RADIX. Refactor it. On PPC32 it is not needed for KFENCE, but to keep it simple just make it similar to PPC64. Move the prototype of hash__kernel_map_pages() into mmu_decl.h to allow IS_ENABLED() to work on 32-bit. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/3656d47c53bff577739dac536dbae31fff52f6d8.1708078640.git.christophe.leroy@csgroup.eu
| * | powerpc/kprobes: Handle error returned by set_memory_rox()Christophe Leroy2024-02-221-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | set_memory_rox() can fail. In case it fails, free allocated memory and return NULL. Link: https://github.com/KSPP/linux/issues/7 Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/b4907cf4339bd086abc40430d91311436cb0c18e.1708078401.git.christophe.leroy@csgroup.eu
| * | powerpc: Implement set_memory_rox()Christophe Leroy2024-02-222-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Same as x86 and s390, add set_memory_rox() to avoid doing one pass with set_memory_ro() and a second pass with set_memory_x(). See commit 60463628c9e0 ("x86/mm: Implement native set_memory_rox()") and commit 22e99fa56443 ("s390/mm: implement set_memory_rox()") for more information. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/dc9a794f82ab62572d7d0be5cb4b8b27920a4f78.1708078316.git.christophe.leroy@csgroup.eu
| * | powerpc: Use user_mode() macro when possibleChristophe Leroy2024-02-226-19/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a nice macro to check user mode. Use it instead of open coding anding with MSR_PR to increase readability and avoid having to comment what that anding is for. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/fbf74887dcf1f1ba9e1680fc3247cbb581b00662.1708078228.git.christophe.leroy@csgroup.eu
| * | powerpc/trace: Restrict hash_fault trace event to HASH MMUChristophe Leroy2024-02-221-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'perf list' on powerpc 8xx shows an event named "1:hash_fault". This event is pointless because trace_hash_fault() is called only from mm/book3s64/hash_utils.c Only define it when CONFIG_PPC_64S_HASH_MMU is selected. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/85a86e51b4ab26ce4b592984cc0a0851a3cc9479.1708076780.git.christophe.leroy@csgroup.eu
| * | powerpc: pmi: Convert to platform remove callback returning voidUwe Kleine-König2024-02-221-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new(), which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/3201daed6d19c01ee0ee72e0f9302a38ecef3577.1708529736.git.u.kleine-koenig@pengutronix.de
| * | powerpc: fsl_msi: Convert to platform remove callback returning voidUwe Kleine-König2024-02-221-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new(), which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/42d8e3721053dce21ea373a24cb37fb0f59eed26.1708529736.git.u.kleine-koenig@pengutronix.de
| * | powerpc: papr_scm: Convert to platform remove callback returning voidUwe Kleine-König2024-02-221-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new(), which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/34847d756453af2e85e5944a8cc2e2c21aacc905.1708529736.git.u.kleine-koenig@pengutronix.de
| * | powerpc: opal-prd: Convert to platform remove callback returning voidUwe Kleine-König2024-02-221-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new(), which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/28dd12b7cbde4b278b8b1d0ae4382dbd8ce9c9c5.1708529736.git.u.kleine-koenig@pengutronix.de
| * | powerpc: gpio_mdio: Convert to platform remove callback returning voidUwe Kleine-König2024-02-221-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new(), which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/8a5ac8044578694879e919322dbd46f140b64950.1708529736.git.u.kleine-koenig@pengutronix.de
| * | powerpc: sgy_cts1000: Convert to platform remove callback returning voidUwe Kleine-König2024-02-221-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new(), which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/1e8396078942d9e46e56d70ed2f749a76391c381.1708529736.git.u.kleine-koenig@pengutronix.de
| * | Revert "powerpc/ps3_defconfig: Disable PPC64_BIG_ENDIAN_ELF_ABI_V2"Geoff Levand2024-02-211-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 482b718a84f08b6fc84879c3e90cc57dba11c115. The preceding commits by Nicholas Piggin enable PS3 support for ELFv2, so there's no need to disable it for PS3 anymore. Signed-off-by: Geoff Levand <geoff@infradead.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/983836405df1b6001a2262972fb32d1aee97d6f5.1705654669.git.geoff@infradead.org
| * | powerpc/ps3: Make real stack frames for LV1 hcallsNicholas Piggin2024-02-211-58/+94
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The PS3 hcall assembly code makes ad-hoc stack frames that don't have a back-chain pointer or meet other requirements like minimum frame size. This probably confuses stack unwinders. Give all hcalls a real stack frame. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Tested-by: Geoff Levand <geoff@infradead.org> [mpe: Add missing \ in LV1_2_IN_4_OUT] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231227072405.63751-4-npiggin@gmail.com
| * | powerpc/ps3: lv1 hcall code use symbolic constant for LR save offsetNicholas Piggin2024-02-211-64/+64
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The LRSAVE constant is required for assembly compiled for both 32-bit and 64-bit, because the value differs there. PS3 is 64-bit only so this is a noop, but it is nice to abstract stack frame offsets. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Tested-by: Geoff Levand <geoff@infradead.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231227072405.63751-3-npiggin@gmail.com
| * | powerpc/ps3: Fix lv1 hcall assembly for ELFv2 calling conventionNicholas Piggin2024-02-212-11/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Stack-passed parameters begin at a different offset in the caller's stack in the ELFv2 ABI. Reported-by: Geoff Levand <geoff@infradead.org> Fixes: 8c5fa3b5c4df ("powerpc/64: Make ELFv2 the default for big-endian builds") Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Tested-by: Geoff Levand <geoff@infradead.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231227072405.63751-2-npiggin@gmail.com
| * | powerpc/pseries: Set CPU_FTR_DBELL according to ibm,pi-featuresNicholas Piggin2024-02-212-5/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PAPR will define a new ibm,pi-features bit which says that doorbells should not be used even on architectures where they exist. This could be because they are emulated and slower than using the interrupt controller directly for IPIs. Wire this bit into the pi-features parser to clear CPU_FTR_DBELL, and ensure CPU_FTR_DBELL is not in CPU_FTRS_ALWAYS. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Tested-by: Vaibhav Jain <vaibhav@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240207035220.339726-2-npiggin@gmail.com
| * | powerpc/pseries: Add a clear modifier to ibm,pa/pi-features parserNicholas Piggin2024-02-211-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a new ibm,pa/pi-features bit is introduced that is intended to apply to existing systems and features, it may have an "inverted" meaning (i.e., bit clear => feature available; bit set => unavailable). Depending on the nature of the feature, this may give the best backward compatibility result where old firmware will continue to have that bit clear and therefore the feature available. The 'invert' modifier presumably was introduced for this type of feature bit. However it invert will set the feature if the bit is clear, which prevents it being used in the situation where an old CPU lacks a feature that a new CPU has, then a new firmware comes out to disable that feature on the new CPU if the bit is set. Adding an 'invert' entry for that feature would incorrectly enable it for the old CPU. So add a 'clear' modifier that clears the feature if the bit is set, but it does not set the feature if the bit is clear. The feature is expected to be set in the cpu table. This replaces the 'invert' modifier, which is unused since commit 7d4703455168 ("powerpc/feature: Remove CPU_FTR_NODSISRALIGN"). Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Tested-by: Vaibhav Jain <vaibhav@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240207035220.339726-1-npiggin@gmail.com
| * | powerpc/perf: Power11 Performance Monitoring supportMadhavan Srinivasan2024-02-213-0/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Base enablement patch to register performance monitoring hardware support for Power11. Most of fields are copied from power10_pmu struct for power11_pmu struct. Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240221044623.1598642-2-mpe@ellerman.id.au
| * | powerpc: Add Power11 architected and raw modeMadhavan Srinivasan2024-02-217-1/+60
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add CPU table entries for raw and architected mode. Most fields are copied from the Power10 table entries. CPU, MMU and user (ELF_HWCAP) features are unchanged vs P10. However userspace can detect P11 because the AT_PLATFORM value changes to "power11". The logical PVR value of 0x0F000007, passed to firmware via the ibm_arch_vec, indicates the kernel can support a P11 compatible CPU, which means at least ISA v3.1 compliant. Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240221044623.1598642-1-mpe@ellerman.id.au
| * | powerpc: Remove duplicate/unnecessary ifdefsShrikanth Hegde2024-02-214-10/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When an ifdef is used in the below manner, second one could be considered as duplicate. ifdef DEFINE_A ...code block... ifdef DEFINE_A <-- This is a duplicate. ...code block... endif else ifndef DEFINE_A <-- This is also duplicate. ...code block... endif endif More details about the script and methods used to find these code patterns are in cover letter of [1]. Few places in arch/powerpc where this pattern was seen: paca.h: Hunk1: Code is under check of CONFIG_PPC64 from line 13, hence the second CONFIG_PPC64 at line 166 is a duplicate. Hunk2: CONFIG_PPC_BOOK3S_64 was defined back to back. Merged the two ifdefs. asm-offsets.c: Code is under check of CONFIG_PPC64 from line 176 hence second CONFIG_PPC64 at line 249 is a duplicate. powermac/feature.c: #ifndef CONFIG_PPC64 is used at line 2066. And then in #else again #ifdef CONFIG_PPC64 is used. Which is a duplicate since in #else means CONFIG_PPC64 is defined. xmon.c: Code is under the check of CONFIG_SMP from line 521 hence the same check of CONFIG_SMP at line 646 is a duplicate. No functional change is intended here. It only aims to improve code readability. [1] https://lore.kernel.org/all/20240118080326.13137-1-sshegde@linux.ibm.com/ Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240216053016.528906-1-sshegde@linux.ibm.com
| * | powerpc: remove unused KCSAN_SANITIZE_early_64.o in MakefileMasahiro Yamada2024-02-191-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 2fb857bc9f9e ("powerpc/kcsan: Add exclusions from instrumentation") added KCSAN_SANITIZE_early_64.o to arch/powerpc/kernel/Makefile, while it does not compile early_64.o. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240216135817.2003106-1-masahiroy@kernel.org
| * | powerpc: ibmebus: make ibmebus_bus_type constRicardo B. Marliere2024-02-152-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit d492cc2573a0 ("driver core: device.h: make struct bus_type a const *"), the driver core can properly handle constant struct bus_type, move the ibmebus_bus_type variable to be a constant structure as well, placing it into read-only memory which can not be modified at runtime. Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: "Ricardo B. Marliere" <ricardo@marliere.net> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240212-bus_cleanup-powerpc2-v2-5-8441b3f77827@marliere.net
| * | powerpc: pmac: make macio_bus_type constRicardo B. Marliere2024-02-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit d492cc2573a0 ("driver core: device.h: make struct bus_type a const *"), the driver core can properly handle constant struct bus_type, move the macio_bus_type variable to be a constant structure as well, placing it into read-only memory which can not be modified at runtime. Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: "Ricardo B. Marliere" <ricardo@marliere.net> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240212-bus_cleanup-powerpc2-v2-4-8441b3f77827@marliere.net
| * | powerpc: mpic: make mpic_subsys constRicardo B. Marliere2024-02-152-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit d492cc2573a0 ("driver core: device.h: make struct bus_type a const *"), the driver core can properly handle constant struct bus_type, move the mpic_subsys variable to be a constant structure as well, placing it into read-only memory which can not be modified at runtime. Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: "Ricardo B. Marliere" <ricardo@marliere.net> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240212-bus_cleanup-powerpc2-v2-3-8441b3f77827@marliere.net
| * | powerpc: vio: make vio_bus_type constRicardo B. Marliere2024-02-152-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit d492cc2573a0 ("driver core: device.h: make struct bus_type a const *"), the driver core can properly handle constant struct bus_type, move the vio_bus_type variable to be a constant structure as well, placing it into read-only memory which can not be modified at runtime. Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: "Ricardo B. Marliere" <ricardo@marliere.net> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240212-bus_cleanup-powerpc2-v2-2-8441b3f77827@marliere.net
| * | powerpc: vio: move device attributes into a new ifdefRicardo B. Marliere2024-02-151-25/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In order to make the distinction of the vio_bus_type variable based on CONFIG_PPC_SMLPAR more explicit, move the required structs into a new ifdef block. This is needed in order to make vio_bus_type const and because the distinction is made explicit, there is no need to set the fields within the vio_cmo_sysfs_init function. Signed-off-by: "Ricardo B. Marliere" <ricardo@marliere.net> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240212-bus_cleanup-powerpc2-v2-1-8441b3f77827@marliere.net
| * | powerpc: Force inlining of arch_vmap_p{u/m}d_supported()Christophe Leroy2024-02-151-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | arch_vmap_pud_supported() and arch_vmap_pmd_supported() are expected to constant-fold to false when RADIX is not enabled. Force inlining in order to avoid following failure which leads to unexpected call of non-existing pud_set_huge() and pmd_set_huge() on powerpc 8xx. In function 'pud_huge_tests', inlined from 'debug_vm_pgtable' at mm/debug_vm_pgtable.c:1399:2: ./arch/powerpc/include/asm/vmalloc.h:9:33: warning: inlining failed in call to 'arch_vmap_pud_supported.isra': call is unlikely and code size would grow [-Winline] 9 | #define arch_vmap_pud_supported arch_vmap_pud_supported | ^~~~~~~~~~~~~~~~~~~~~~~ ./arch/powerpc/include/asm/vmalloc.h:10:20: note: in expansion of macro 'arch_vmap_pud_supported' 10 | static inline bool arch_vmap_pud_supported(pgprot_t prot) | ^~~~~~~~~~~~~~~~~~~~~~~ ./arch/powerpc/include/asm/vmalloc.h:9:33: note: called from here 9 | #define arch_vmap_pud_supported arch_vmap_pud_supported mm/debug_vm_pgtable.c:458:14: note: in expansion of macro 'arch_vmap_pud_supported' 458 | if (!arch_vmap_pud_supported(args->page_prot) || | ^~~~~~~~~~~~~~~~~~~~~~~ Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202402131836.OU1TDuoi-lkp@intel.com/ Fixes: 8309c9d71702 ("powerpc: inline huge vmap supported functions") Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/bbd84ad52bf377e8d3b5865a906f2dc5d99964ba.1707832677.git.christophe.leroy@csgroup.eu
| * | powerpc/smp: Remap boot CPU onto core 0 if >= nr_cpu_idsMichael Ellerman2024-02-153-7/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If nr_cpu_ids is too low to include the boot CPU, remap the boot CPU onto logical core 0. This is achieved in two stages. In early_init_dt_scan_cpus() the boot CPU is renumbered to be on logical core 0, and the original boot core's hardware ID is recorded. Later in smp_setup_cpu_maps(), if the original boot core ID is set, the logical CPU numbers on the 0th core are skipped in the normal device tree search over CPU device tree nodes. Then the search is continued until the device tree node matching the boot core is found, and those CPUs are assigned the CPU numbers starting at 0. This allows kdump kernels to be booted with low values for nr_cpu_ids to conserve memory, while also allowing the crashing/boot CPU to be any CPU. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Tested-by: Wen Xiong <wenxiong@us.ibm.com> Link: https://msgid.link/20231229120107.2281153-5-mpe@ellerman.id.au
| * | powerpc/smp: Factor out assign_threads()Michael Ellerman2024-02-151-11/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Factor out the for loop that assigns CPU numbers to threads of a core. The function takes the next CPU number to use as input, and returns the next available CPU number after the threads has been assigned. This will allow a subsequent change to assign threads out of order. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231229120107.2281153-4-mpe@ellerman.id.au
| * | powerpc/smp: Lookup avail once per device tree nodeMichael Ellerman2024-02-151-6/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | The of_device_is_available() check only needs to be done once per device node, there's no need to repeat it for each thread. Move it out of the loop. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231229120107.2281153-3-mpe@ellerman.id.au
| * | powerpc/smp: Increase nr_cpu_ids to include the boot CPUMichael Ellerman2024-02-151-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If nr_cpu_ids is too low to include the boot CPU adjust nr_cpu_ids upward. Otherwise the kernel will BUG when trying to allocate a paca for the boot CPU and fail to boot. Cc: stable@vger.kernel.org Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231229120107.2281153-2-mpe@ellerman.id.au
| * | powerpc/smp: Adjust nr_cpu_ids to cover all threads of a coreMichael Ellerman2024-02-151-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If nr_cpu_ids is too low to include at least all the threads of a single core adjust nr_cpu_ids upwards. This avoids triggering odd bugs in code that assumes all threads of a core are available. Cc: stable@vger.kernel.org Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231229120107.2281153-1-mpe@ellerman.id.au
* | | Merge tag 'v6.9-p1' of ↵Linus Torvalds2024-03-1511-2/+5040
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto updates from Herbert Xu: "API: - Avoid unnecessary copying in scomp for trivial SG lists Algorithms: - Optimise NEON CCM implementation on ARM64 Drivers: - Add queue stop/query debugfs support in hisilicon/qm - Intel qat updates and cleanups" * tag 'v6.9-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (79 commits) Revert "crypto: remove CONFIG_CRYPTO_STATS" crypto: scomp - remove memcpy if sg_nents is 1 and pages are lowmem crypto: tcrypt - add ffdhe2048(dh) test crypto: iaa - fix the missing CRYPTO_ALG_ASYNC in cra_flags crypto: hisilicon/zip - fix the missing CRYPTO_ALG_ASYNC in cra_flags hwrng: hisi - use dev_err_probe MAINTAINERS: Remove T Ambarus from few mchp entries crypto: iaa - Fix comp/decomp delay statistics crypto: iaa - Fix async_disable descriptor leak dt-bindings: rng: atmel,at91-trng: add sam9x7 TRNG dt-bindings: crypto: add sam9x7 in Atmel TDES dt-bindings: crypto: add sam9x7 in Atmel SHA dt-bindings: crypto: add sam9x7 in Atmel AES crypto: remove CONFIG_CRYPTO_STATS crypto: dh - Make public key test FIPS-only crypto: rockchip - fix to check return value crypto: jitter - fix CRYPTO_JITTERENTROPY help text crypto: qat - make ring to service map common for QAT GEN4 crypto: qat - fix ring to service map for dcc in 420xx crypto: qat - fix ring to service map for dcc in 4xxx ...
| * | | crypto: vmx - Move to arch/powerpc/cryptoDanny Tsen2024-01-2611-2/+5040
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Relocate all crypto files in vmx driver to arch/powerpc/crypto directory and remove vmx directory. drivers/crypto/vmx/aes.c rename to arch/powerpc/crypto/aes.c drivers/crypto/vmx/aes_cbc.c rename to arch/powerpc/crypto/aes_cbc.c drivers/crypto/vmx/aes_ctr.c rename to arch/powerpc/crypto/aes_ctr.c drivers/crypto/vmx/aes_xts.c rename to arch/powerpc/crypto/aes_xts.c drivers/crypto/vmx/aesp8-ppc.h rename to arch/powerpc/crypto/aesp8-ppc.h drivers/crypto/vmx/aesp8-ppc.pl rename to arch/powerpc/crypto/aesp8-ppc.pl drivers/crypto/vmx/ghash.c rename to arch/powerpc/crypto/ghash.c drivers/crypto/vmx/ghashp8-ppc.pl rename to arch/powerpc/crypto/ghashp8-ppc.pl drivers/crypto/vmx/vmx.c rename to arch/powerpc/crypto/vmx.c deleted files: drivers/crypto/vmx/Makefile drivers/crypto/vmx/Kconfig drivers/crypto/vmx/ppc-xlate.pl This patch has been tested has passed the selftest. The patch is also tested with CONFIG_CRYPTO_MANAGER_EXTRA_TESTS enabled. Signed-off-by: Danny Tsen <dtsen@linux.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* | | Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2024-03-153-4/+45
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull kvm updates from Paolo Bonzini: "S390: - Changes to FPU handling came in via the main s390 pull request - Only deliver to the guest the SCLP events that userspace has requested - More virtual vs physical address fixes (only a cleanup since virtual and physical address spaces are currently the same) - Fix selftests undefined behavior x86: - Fix a restriction that the guest can't program a PMU event whose encoding matches an architectural event that isn't included in the guest CPUID. The enumeration of an architectural event only says that if a CPU supports an architectural event, then the event can be programmed *using the architectural encoding*. The enumeration does NOT say anything about the encoding when the CPU doesn't report support the event *in general*. It might support it, and it might support it using the same encoding that made it into the architectural PMU spec - Fix a variety of bugs in KVM's emulation of RDPMC (more details on individual commits) and add a selftest to verify KVM correctly emulates RDMPC, counter availability, and a variety of other PMC-related behaviors that depend on guest CPUID and therefore are easier to validate with selftests than with custom guests (aka kvm-unit-tests) - Zero out PMU state on AMD if the virtual PMU is disabled, it does not cause any bug but it wastes time in various cases where KVM would check if a PMC event needs to be synthesized - Optimize triggering of emulated events, with a nice ~10% performance improvement in VM-Exit microbenchmarks when a vPMU is exposed to the guest - Tighten the check for "PMI in guest" to reduce false positives if an NMI arrives in the host while KVM is handling an IRQ VM-Exit - Fix a bug where KVM would report stale/bogus exit qualification information when exiting to userspace with an internal error exit code - Add a VMX flag in /proc/cpuinfo to report 5-level EPT support - Rework TDP MMU root unload, free, and alloc to run with mmu_lock held for read, e.g. to avoid serializing vCPUs when userspace deletes a memslot - Tear down TDP MMU page tables at 4KiB granularity (used to be 1GiB). KVM doesn't support yielding in the middle of processing a zap, and 1GiB granularity resulted in multi-millisecond lags that are quite impolite for CONFIG_PREEMPT kernels - Allocate write-tracking metadata on-demand to avoid the memory overhead when a kernel is built with i915 virtualization support but the workloads use neither shadow paging nor i915 virtualization - Explicitly initialize a variety of on-stack variables in the emulator that triggered KMSAN false positives - Fix the debugregs ABI for 32-bit KVM - Rework the "force immediate exit" code so that vendor code ultimately decides how and when to force the exit, which allowed some optimization for both Intel and AMD - Fix a long-standing bug where kvm_has_noapic_vcpu could be left elevated if vCPU creation ultimately failed, causing extra unnecessary work - Cleanup the logic for checking if the currently loaded vCPU is in-kernel - Harden against underflowing the active mmu_notifier invalidation count, so that "bad" invalidations (usually due to bugs elsehwere in the kernel) are detected earlier and are less likely to hang the kernel x86 Xen emulation: - Overlay pages can now be cached based on host virtual address, instead of guest physical addresses. This removes the need to reconfigure and invalidate the cache if the guest changes the gpa but the underlying host virtual address remains the same - When possible, use a single host TSC value when computing the deadline for Xen timers in order to improve the accuracy of the timer emulation - Inject pending upcall events when the vCPU software-enables its APIC to fix a bug where an upcall can be lost (and to follow Xen's behavior) - Fall back to the slow path instead of warning if "fast" IRQ delivery of Xen events fails, e.g. if the guest has aliased xAPIC IDs RISC-V: - Support exception and interrupt handling in selftests - New self test for RISC-V architectural timer (Sstc extension) - New extension support (Ztso, Zacas) - Support userspace emulation of random number seed CSRs ARM: - Infrastructure for building KVM's trap configuration based on the architectural features (or lack thereof) advertised in the VM's ID registers - Support for mapping vfio-pci BARs as Normal-NC (vaguely similar to x86's WC) at stage-2, improving the performance of interacting with assigned devices that can tolerate it - Conversion of KVM's representation of LPIs to an xarray, utilized to address serialization some of the serialization on the LPI injection path - Support for _architectural_ VHE-only systems, advertised through the absence of FEAT_E2H0 in the CPU's ID register - Miscellaneous cleanups, fixes, and spelling corrections to KVM and selftests LoongArch: - Set reserved bits as zero in CPUCFG - Start SW timer only when vcpu is blocking - Do not restart SW timer when it is expired - Remove unnecessary CSR register saving during enter guest - Misc cleanups and fixes as usual Generic: - Clean up Kconfig by removing CONFIG_HAVE_KVM, which was basically always true on all architectures except MIPS (where Kconfig determines the available depending on CPU capabilities). It is replaced either by an architecture-dependent symbol for MIPS, and IS_ENABLED(CONFIG_KVM) everywhere else - Factor common "select" statements in common code instead of requiring each architecture to specify it - Remove thoroughly obsolete APIs from the uapi headers - Move architecture-dependent stuff to uapi/asm/kvm.h - Always flush the async page fault workqueue when a work item is being removed, especially during vCPU destruction, to ensure that there are no workers running in KVM code when all references to KVM-the-module are gone, i.e. to prevent a very unlikely use-after-free if kvm.ko is unloaded - Grab a reference to the VM's mm_struct in the async #PF worker itself instead of gifting the worker a reference, so that there's no need to remember to *conditionally* clean up after the worker Selftests: - Reduce boilerplate especially when utilize selftest TAP infrastructure - Add basic smoke tests for SEV and SEV-ES, along with a pile of library support for handling private/encrypted/protected memory - Fix benign bugs where tests neglect to close() guest_memfd files" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (246 commits) selftests: kvm: remove meaningless assignments in Makefiles KVM: riscv: selftests: Add Zacas extension to get-reg-list test RISC-V: KVM: Allow Zacas extension for Guest/VM KVM: riscv: selftests: Add Ztso extension to get-reg-list test RISC-V: KVM: Allow Ztso extension for Guest/VM RISC-V: KVM: Forward SEED CSR access to user space KVM: riscv: selftests: Add sstc timer test KVM: riscv: selftests: Change vcpu_has_ext to a common function KVM: riscv: selftests: Add guest helper to get vcpu id KVM: riscv: selftests: Add exception handling support LoongArch: KVM: Remove unnecessary CSR register saving during enter guest LoongArch: KVM: Do not restart SW timer when it is expired LoongArch: KVM: Start SW timer only when vcpu is blocking LoongArch: KVM: Set reserved bits as zero in CPUCFG KVM: selftests: Explicitly close guest_memfd files in some gmem tests KVM: x86/xen: fix recursive deadlock in timer injection KVM: pfncache: simplify locking and make more self-contained KVM: x86/xen: remove WARN_ON_ONCE() with false positives in evtchn delivery KVM: x86/xen: inject vCPU upcall vector when local APIC is enabled KVM: x86/xen: improve accuracy of Xen timers ...
| * \ \ Merge tag 'kvmarm-6.9' of ↵Paolo Bonzini2024-03-111-2/+1
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/arm64 updates for 6.9 - Infrastructure for building KVM's trap configuration based on the architectural features (or lack thereof) advertised in the VM's ID registers - Support for mapping vfio-pci BARs as Normal-NC (vaguely similar to x86's WC) at stage-2, improving the performance of interacting with assigned devices that can tolerate it - Conversion of KVM's representation of LPIs to an xarray, utilized to address serialization some of the serialization on the LPI injection path - Support for _architectural_ VHE-only systems, advertised through the absence of FEAT_E2H0 in the CPU's ID register - Miscellaneous cleanups, fixes, and spelling corrections to KVM and selftests
| | * | | KVM: Get rid of return value from kvm_arch_create_vm_debugfs()Oliver Upton2024-02-231-2/+1
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The general expectation with debugfs is that any initialization failure is nonfatal. Nevertheless, kvm_arch_create_vm_debugfs() allows implementations to return an error and kvm_create_vm_debugfs() allows that to fail VM creation. Change to a void return to discourage architectures from making debugfs failures fatal for the VM. Seems like everyone already had the right idea, as all implementations already return 0 unconditionally. Acked-by: Marc Zyngier <maz@kernel.org> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Link: https://lore.kernel.org/r/20240216155941.2029458-1-oliver.upton@linux.dev Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
| * | | Merge tag 'loongarch-kvm-6.9' of ↵Paolo Bonzini2024-03-1130-96/+262
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson into HEAD LoongArch KVM changes for v6.9 * Set reserved bits as zero in CPUCFG. * Start SW timer only when vcpu is blocking. * Do not restart SW timer when it is expired. * Remove unnecessary CSR register saving during enter guest.
| * \ \ \ Merge tag 'kvm-x86-guest_memfd_fixes-6.8' of ↵Paolo Bonzini2024-03-093-9/+9
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://github.com/kvm-x86/linux into HEAD KVM GUEST_MEMFD fixes for 6.8: - Make KVM_MEM_GUEST_MEMFD mutually exclusive with KVM_MEM_READONLY to avoid creating ABI that KVM can't sanely support. - Update documentation for KVM_SW_PROTECTED_VM to make it abundantly clear that such VMs are purely a development and testing vehicle, and come with zero guarantees. - Limit KVM_SW_PROTECTED_VM guests to the TDP MMU, as the long term plan is to support confidential VMs with deterministic private memory (SNP and TDX) only in the TDP MMU. - Fix a bug in a GUEST_MEMFD negative test that resulted in false passes when verifying that KVM_MEM_GUEST_MEMFD memslots can't be dirty logged.
| * \ \ \ \ Merge branch 'kvm-kconfig'Paolo Bonzini2024-02-081-1/+0
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Cleanups to Kconfig definitions for KVM * replace HAVE_KVM with an architecture-dependent symbol, when CONFIG_KVM may or may not be available depending on CPU capabilities (MIPS) * replace HAVE_KVM with IS_ENABLED(CONFIG_KVM) for host-side code that is not part of the KVM module, so that it is completely compiled out * factor common "select" statements in common code instead of requiring each architecture to specify it
| | * | | | | kvm: move "select IRQ_BYPASS_MANAGER" to common codePaolo Bonzini2024-02-081-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | CONFIG_IRQ_BYPASS_MANAGER is a dependency of the common code included by CONFIG_HAVE_KVM_IRQ_BYPASS. There is no advantage in adding the corresponding "select" directive to each architecture. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| * | | | | | KVM: define __KVM_HAVE_GUEST_DEBUG unconditionallyPaolo Bonzini2024-02-081-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since all architectures (for historical reasons) have to define struct kvm_guest_debug_arch, and since userspace has to check KVM_CHECK_EXTENSION(KVM_CAP_SET_GUEST_DEBUG) anyway, there is no advantage in masking the capability #define itself. Remove the #define __KVM_HAVE_GUEST_DEBUG from architecture-specific headers. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| * | | | | | KVM: powerpc: move powerpc-specific structs to uapi/asm/kvm.hPaolo Bonzini2024-02-081-0/+44
| |/ / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While this in principle breaks the appearance of KVM_PPC_* ioctls on architectures other than powerpc, this seems unlikely to be a problem considering that there are already many "struct kvm_ppc_*" definitions in arch/powerpc/include/uapi. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* | | | | | Merge tag 'mm-nonmm-stable-2024-03-14-09-36' of ↵Linus Torvalds2024-03-143-4/+3
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-MM updates from Andrew Morton: - Kuan-Wei Chiu has developed the well-named series "lib min_heap: Min heap optimizations". - Kuan-Wei Chiu has also sped up the library sorting code in the series "lib/sort: Optimize the number of swaps and comparisons". - Alexey Gladkov has added the ability for code running within an IPC namespace to alter its IPC and MQ limits. The series is "Allow to change ipc/mq sysctls inside ipc namespace". - Geert Uytterhoeven has contributed some dhrystone maintenance work in the series "lib: dhry: miscellaneous cleanups". - Ryusuke Konishi continues nilfs2 maintenance work in the series "nilfs2: eliminate kmap and kmap_atomic calls" "nilfs2: fix kernel bug at submit_bh_wbc()" - Nathan Chancellor has updated our build tools requirements in the series "Bump the minimum supported version of LLVM to 13.0.1". - Muhammad Usama Anjum continues with the selftests maintenance work in the series "selftests/mm: Improve run_vmtests.sh". - Oleg Nesterov has done some maintenance work against the signal code in the series "get_signal: minor cleanups and fix". Plus the usual shower of singleton patches in various parts of the tree. Please see the individual changelogs for details. * tag 'mm-nonmm-stable-2024-03-14-09-36' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (77 commits) nilfs2: prevent kernel bug at submit_bh_wbc() nilfs2: fix failure to detect DAT corruption in btree and direct mappings ocfs2: enable ocfs2_listxattr for special files ocfs2: remove SLAB_MEM_SPREAD flag usage assoc_array: fix the return value in assoc_array_insert_mid_shortcut() buildid: use kmap_local_page() watchdog/core: remove sysctl handlers from public header nilfs2: use div64_ul() instead of do_div() mul_u64_u64_div_u64: increase precision by conditionally swapping a and b kexec: copy only happens before uchunk goes to zero get_signal: don't initialize ksig->info if SIGNAL_GROUP_EXIT/group_exec_task get_signal: hide_si_addr_tag_bits: fix the usage of uninitialized ksig get_signal: don't abuse ksig->info.si_signo and ksig->sig const_structs.checkpatch: add device_type Normalise "name (ad@dr)" MODULE_AUTHORs to "name <ad@dr>" dyndbg: replace kstrdup() + strchr() with kstrdup_and_replace() list: leverage list_is_head() for list_entry_is_head() nilfs2: MAINTAINERS: drop unreachable project mirror site smp: make __smp_processor_id() 0-argument macro fat: fix uninitialized field in nostale filehandles ...
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