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* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparcLinus Torvalds2014-05-0612-107/+148
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull sparc fixes from David Miller: "I've been auditing the THP support on sparc64 and found several bugs, hopefully most of which are fixed completely here. Also an RT kernel locking fix from Kirill Tkhai" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sparc64: Give more detailed information in {pgd,pmd}_ERROR() and kill pte_ERROR(). sparc64: Add basic validations to {pud,pmd}_bad(). sparc64: Use 'ILOG2_4MB' instead of constant '22'. sparc64: Fix range check in kern_addr_valid(). sparc64: Fix top-level fault handling bugs. sparc64: Handle 32-bit tasks properly in compute_effective_address(). sparc64: Don't use _PAGE_PRESENT in pte_modify() mask. sparc64: Fix hex values in comment above pte_modify(). sparc64: Fix bugs in get_user_pages_fast() wrt. THP. sparc64: Fix huge PMD invalidation. sparc64: Fix executable bit testing in set_pmd_at() paths. sparc64: Normalize NMI watchdog logging and behavior. sparc64: Make itc_sync_lock raw sparc64: Fix argument sign extension for compat_sys_futex().
| * sparc64: Give more detailed information in {pgd,pmd}_ERROR() and kill ↵David S. Miller2014-05-031-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pte_ERROR(). pte_ERROR() is not used anywhere, delete it. For pgd_ERROR() and pmd_ERROR(), output something similar to x86, giving the address of the pgd/pmd as well as it's value. Also provide the caller, since these macros are invoked from pgd_clear_bad() and pmd_clear_bad() which provides little context as to what high level operation was occuring when the BAD state was detected. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Add basic validations to {pud,pmd}_bad().David S. Miller2014-05-031-15/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of returning false we should at least check the most basic things, otherwise page table corruptions will be very difficult to debug. PMD and PTE tables are of size PAGE_SIZE, so none of the sub-PAGE_SIZE bits should be set. We also complement this with a check that the physical address the pud/pmd points to is valid memory. PowerPC was used as a guide while implementating this. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Use 'ILOG2_4MB' instead of constant '22'.David S. Miller2014-05-034-10/+10
| | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Fix range check in kern_addr_valid().David S. Miller2014-05-031-1/+1
| | | | | | | | | | | | | | | | | | | | In commit b2d438348024b75a1ee8b66b85d77f569a5dfed8 ("sparc64: Make PAGE_OFFSET variable."), the MAX_PHYS_ADDRESS_BITS value was increased (to 47). This constant reference to '41UL' was missed. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Fix top-level fault handling bugs.David S. Miller2014-05-031-30/+52
| | | | | | | | | | | | | | | | | | | | | | Make get_user_insn() able to cope with huge PMDs. Next, make do_fault_siginfo() more robust when get_user_insn() can't actually fetch the instruction. In particular, use the MMU announced fault address when that happens, instead of calling compute_effective_address() and computing garbage. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Handle 32-bit tasks properly in compute_effective_address().David S. Miller2014-05-031-3/+9
| | | | | | | | | | | | | | If we have a 32-bit task we must chop off the top 32-bits of the 64-bit value just as the cpu would. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Don't use _PAGE_PRESENT in pte_modify() mask.David S. Miller2014-05-031-4/+4
| | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Fix hex values in comment above pte_modify().David S. Miller2014-05-031-2/+2
| | | | | | | | | | | | | | When _PAGE_SPECIAL and _PAGE_PMD_HUGE were added to the mask, the comment was not updated. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Fix bugs in get_user_pages_fast() wrt. THP.David S. Miller2014-05-032-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | The large PMD path needs to check _PAGE_VALID not _PAGE_PRESENT, to decide if it needs to bail and return 0. pmd_large() should therefore just check _PAGE_PMD_HUGE. Calls to gup_huge_pmd() are guarded with a check of pmd_large(), so we just need to add a valid bit check. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Fix huge PMD invalidation.David S. Miller2014-05-033-15/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On sparc64 "present" and "valid" are seperate PTE bits, this allows us to naturally distinguish between the user explicitly asking for PROT_NONE with mprotect() and other situations. However we weren't handling this properly in the huge PMD paths. First of all, the page table walker in the TSB miss path only checks for _PAGE_PMD_HUGE. So the generic pmdp_invalidate() would clear _PAGE_PRESENT but the TLB miss paths would still load it into the TLB as a valid huge PMD. Fix this by clearing the valid bit in pmdp_invalidate(), and also checking the valid bit in USER_PGTABLE_CHECK_PMD_HUGE using "brgez" since _PAGE_VALID is bit 63 in both the sun4u and sun4v pte layouts. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Fix executable bit testing in set_pmd_at() paths.David S. Miller2014-05-031-6/+9
| | | | | | | | | | | | | | | | | | | | This code was mistakenly using the exec bit from the PMD in all cases, even when the PMD isn't a huge PMD. If it's not a huge PMD, test the exec bit in the individual ptes down in tlb_batch_pmd_scan(). Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Normalize NMI watchdog logging and behavior.David S. Miller2014-05-031-16/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Bring this code in line with the perf based generic NMI watchdog in kernel/watchdog.c (which we should convert over to at some point). In particular, don't do anything super fancy when the watchdog triggers, and specifically don't do a do_exit() which only makes things worse. Either panic(), or WARN(). The latter of which will do all of the actions such as give us a stack backtrace. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Make itc_sync_lock rawKirill Tkhai2014-05-021-3/+3
| | | | | | | | | | | | | | | | | | | | | | One more place where we must not be able to be preempted or to be interrupted in RT. Always actually disable interrupts during synchronization cycle. Signed-off-by: Kirill Tkhai <tkhai@yandex.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Fix argument sign extension for compat_sys_futex().David S. Miller2014-05-021-1/+1
| | | | | | | | | | | | Only the second argument, 'op', is signed. Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge tag 'xtensa-next-20140503' of git://github.com/czankel/xtensa-linuxLinus Torvalds2014-05-0523-167/+691
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull Xtensa fixes from Chris Zankel: - Fixes allmodconfig, allnoconfig builds - Adds highmem support - Enables build-time exception table sorting. * tag 'xtensa-next-20140503' of git://github.com/czankel/xtensa-linux: xtensa: ISS: don't depend on CONFIG_TTY xtensa: xt2000: drop redundant sysmem initialization xtensa: add support for KC705 xtensa: xtfpga: introduce SoC I/O bus xtensa: add HIGHMEM support xtensa: optimize local_flush_tlb_kernel_range xtensa: dump sysmem from the bootmem_init xtensa: handle memmap kernel option xtensa: keep sysmem banks ordered in mem_reserve xtensa: keep sysmem banks ordered in add_sysmem_bank xtensa: split bootparam and kernel meminfo xtensa: enable sorting extable at build time xtensa: export __{invalidate,flush}_dcache_range xtensa: Export __invalidate_icache_range
| * | xtensa: ISS: don't depend on CONFIG_TTYMax Filippov2014-05-052-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | Build console support only when CONFIG_TTY is selected. This restores ISS as the default platform for allnoconfig builds. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
| * | xtensa: xt2000: drop redundant sysmem initializationMax Filippov2014-04-101-11/+1
| | | | | | | | | | | | | | | | | | | | | sysmem structure initialization in xt2000 platform_init is identical to the one done in init_arch just before the call to platform_init. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| * | xtensa: add support for KC705Max Filippov2014-04-062-0/+39
| | | | | | | | | | | | Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| * | xtensa: xtfpga: introduce SoC I/O busMax Filippov2014-04-063-53/+64
| | | | | | | | | | | | Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| * | xtensa: add HIGHMEM supportMax Filippov2014-04-069-16/+270
| | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce fixmap area just below the vmalloc region. Use it for atomic mapping of high memory pages. High memory on cores with cache aliasing is not supported and is still to be implemented. Fail build for such configurations for now. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| * | xtensa: optimize local_flush_tlb_kernel_rangeMax Filippov2014-04-063-7/+34
| | | | | | | | | | | | | | | | | | Don't flush whole TLB if only a small kernel range is requested. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| * | xtensa: dump sysmem from the bootmem_initMax Filippov2014-04-021-0/+12
| | | | | | | | | | | | | | | | | | | | | Debug dump of physical memory configuration. Useful for inspection of resulting memory map, esp. in the presence of memmap= kernel option. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| * | xtensa: handle memmap kernel optionMax Filippov2014-04-022-0/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This option is useful for reserving memory regions for secondary cores in AMP configurations. Implement the following memmap variants: - memmap=nn[KMG]@ss[KMG]: force usage of a specific region of memory; - memmap=nn[KMG]$ss[KMG]: mark specified memory as reserved; - memmap=nn[KMG]: set end of memory. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| * | xtensa: keep sysmem banks ordered in mem_reserveMax Filippov2014-04-022-33/+51
| | | | | | | | | | | | | | | | | | | | | Rewrite mem_reserve so that it keeps bank order. Also make its return code more traditional. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| * | xtensa: keep sysmem banks ordered in add_sysmem_bankMax Filippov2014-04-022-5/+103
| | | | | | | | | | | | | | | | | | | | | Rewrite add_sysmem_bank so that it keeps bank order and merges adjacent/overlapping banks. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| * | xtensa: split bootparam and kernel meminfoMax Filippov2014-04-024-45/+61
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Bootparam meminfo is a bootloader ABI, kernel meminfo is for the kernel bookkeeping, keep them separate. Kernel doesn't care of memory region types, so drop the type field and don't pass it to add_sysmem_bank. Move kernel sysmem structures and prototypes to asm/sysmem.h and sysmem variable and add_sysmem_bank to mm/init.c Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| * | xtensa: enable sorting extable at build timeMax Filippov2014-04-021-0/+1
| | | | | | | | | | | | | | | Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Acked-by: David Daney <ddaney.cavm@gmail.com>
| * | xtensa: export __{invalidate,flush}_dcache_rangeMax Filippov2014-04-021-0/+6
| | | | | | | | | | | | Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| * | xtensa: Export __invalidate_icache_rangeGeert Uytterhoeven2014-04-021-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When modular code calls flush_icache_range(): ERROR: "__invalidate_icache_range" [drivers/misc/lkdtm.ko] undefined! make[1]: *** [__modpost] Error 1 Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* | | Merge tag 'arm64-fixes' of ↵Linus Torvalds2014-05-045-7/+42
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Catalin Marinas: "These are mostly arm64 fixes with an additional arm(64) platform fix for the initialisation of vexpress clocks (the latter only affecting arm64; the arch/arm64 code is SoC agnostic and does not rely on early SoC-specific calls) - vexpress platform clocks initialisation moved earlier following the arm64 move of of_clk_init() call in a previous commit - Default DMA ops changed to non-coherent to preserve compatibility with 32-bit ARM DT files. The "dma-coherent" property can be used to explicitly mark a device coherent. The Applied Micro DT file has been updated to avoid DMA cache maintenance for the X-Gene SATA controller (the only arm64 related driver with such assumption in -rc mainline) - Fixmap correction for earlyprintk - kern_addr_valid() fix for huge pages" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: vexpress: Initialise the sysregs before setting up the clocks arm64: Mark the Applied Micro X-Gene SATA controller as DMA coherent arm64: Use bus notifiers to set per-device coherent DMA ops arm64: Make default dma_ops to be noncoherent arm64: fixmap: fix missing sub-page offset for earlyprintk arm64: Fix for the arm64 kern_addr_valid() function
| * | | arm64: Mark the Applied Micro X-Gene SATA controller as DMA coherentCatalin Marinas2014-05-031-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since the default DMA ops for arm64 are non-coherent, mark the X-Gene controller explicitly as dma-coherent to avoid additional cache maintenance. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Loc Ho <lho@apm.com>
| * | | arm64: Use bus notifiers to set per-device coherent DMA opsCatalin Marinas2014-05-032-2/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Recently, the default DMA ops have been changed to non-coherent for alignment with 32-bit ARM platforms (and DT files). This patch adds bus notifiers to be able to set the coherent DMA ops (with no cache maintenance) for devices explicitly marked as coherent via the "dma-coherent" DT property. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| * | | arm64: Make default dma_ops to be noncoherentRitesh Harjani2014-05-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently arm64 dma_ops is by default made coherent which makes it opposite in default policy from arm. Make default dma_ops to be noncoherent (same as arm), as currently there aren't any dma-capable drivers which assumes coherent ops Signed-off-by: Ritesh Harjani <ritesh.harjani@gmail.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| * | | arm64: fixmap: fix missing sub-page offset for earlyprintkMarc Zyngier2014-05-031-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit d57c33c5daa4 (add generic fixmap.h) added (among other similar things) set_fixmap_io to deal with early ioremap of devices. More recently, commit bf4b558eba92 (arm64: add early_ioremap support) converted the arm64 earlyprintk to use set_fixmap_io. A side effect of this conversion is that my virtual machines have stopped booting when I pass "earlyprintk=uart8250-8bit,0x3f8" to the guest kernel. Turns out that the new earlyprintk code doesn't care at all about sub-page offsets, and just assumes that the earlyprintk device will be page-aligned. Obviously, that doesn't play well with the above example. Further investigation shows that set_fixmap_io uses __set_fixmap instead of __set_fixmap_offset. A fix is to introduce a set_fixmap_offset_io that uses the latter, and to remove the superflous call to fix_to_virt (which only returns the value that set_fixmap_io has already given us). With this applied, my VMs are back in business. Tested on a Cortex-A57 platform with kvmtool as platform emulation. Cc: Will Deacon <will.deacon@arm.com> Acked-by: Mark Salter <msalter@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| * | | arm64: Fix for the arm64 kern_addr_valid() functionDave Anderson2014-05-031-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix for the arm64 kern_addr_valid() function to recognize virtual addresses in the kernel logical memory map. The function fails as written because it does not check whether the addresses in that region are mapped at the pmd level to 2MB or 512MB pages, continues the page table walk to the pte level, and issues a garbage value to pfn_valid(). Tested on 4K-page and 64K-page kernels. Signed-off-by: Dave Anderson <anderson@redhat.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* | | | Merge branch 'irq-urgent-for-linus' of ↵Linus Torvalds2014-05-031-0/+5
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq fixes from Thomas Gleixner: "This udpate delivers: - A fix for dynamic interrupt allocation on x86 which is required to exclude the GSI interrupts from the dynamic allocatable range. This was detected with the newfangled tablet SoCs which have GPIOs and therefor allocate a range of interrupts. The MSI allocations already excluded the GSI range, so we never noticed before. - The last missing set_irq_affinity() repair, which was delayed due to testing issues - A few bug fixes for the armada SoC interrupt controller - A memory allocation fix for the TI crossbar interrupt controller - A trivial kernel-doc warning fix" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip: irq-crossbar: Not allocating enough memory irqchip: armanda: Sanitize set_irq_affinity() genirq: x86: Ensure that dynamic irq allocation does not conflict linux/interrupt.h: fix new kernel-doc warnings irqchip: armada-370-xp: Fix releasing of MSIs irqchip: armada-370-xp: implement the ->check_device() msi_chip operation irqchip: armada-370-xp: fix invalid cast of signed value into unsigned variable
| * | | | genirq: x86: Ensure that dynamic irq allocation does not conflictThomas Gleixner2014-04-281-0/+5
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On x86 the allocation of irq descriptors may allocate interrupts which are in the range of the GSI interrupts. That's wrong as those interrupts are hardwired and we don't have the irq domain translation like PPC. So one of these interrupts can be hooked up later to one of the devices which are hard wired to it and the io_apic init code for that particular interrupt line happily reuses that descriptor with a completely different configuration so hell breaks lose. Inside x86 we allocate dynamic interrupts from above nr_gsi_irqs, except for a few usage sites which have not yet blown up in our face for whatever reason. But for drivers which need an irq range, like the GPIO drivers, we have no limit in place and we don't want to expose such a detail to a driver. To cure this introduce a function which an architecture can implement to impose a lower bound on the dynamic interrupt allocations. Implement it for x86 and set the lower bound to nr_gsi_irqs, which is the end of the hardwired interrupt space, so all dynamic allocations happen above. That not only allows the GPIO driver to work sanely, it also protects the bogus callsites of create_irq_nr() in hpet, uv, irq_remapping and htirq code. They need to be cleaned up as well, but that's a separate issue. Reported-by: Jin Yao <yao.jin@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: Mathias Nyman <mathias.nyman@linux.intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: H. Peter Anvin <hpa@linux.intel.com> Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Krogerus Heikki <heikki.krogerus@intel.com> Cc: Linus Walleij <linus.walleij@linaro.org> Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1404241617360.28206@ionos.tec.linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | | | Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds2014-05-022-2/+13
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Peter Anvin: "Two very small changes: one fix for the vSMP Foundation platform, and one to help LLVM not choke on options it doesn't understand (although it probably should)" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/vsmp: Fix irq routing x86: LLVMLinux: Wrap -mno-80387 with cc-option
| * | | | x86/vsmp: Fix irq routingOren Twaig2014-04-281-1/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Correct IRQ routing in case a vSMP box is detected but the Interrupt Routing Comply (IRC) value is set to "comply", which leads to incorrect IRQ routing. Before the patch: When a vSMP box was detected and IRC was set to "comply", users (and the kernel) couldn't effectively set the destination of the IRQs. This is because the hook inside vsmp_64.c always setup all CPUs as the IRQ destination using cpumask_setall() as the return value for IRQ allocation mask. Later, this "overrided" mask caused the kernel to set the IRQ destination to the lowest online CPU in the mask (CPU0 usually). After the patch: When the IRC is set to "comply", users (and the kernel) can control the destination of the IRQs as we will not be changing the default "apic->vector_allocation_domain". Signed-off-by: Oren Twaig <oren@scalemp.com> Acked-by: Shai Fultheim <shai@scalemp.com> Link: http://lkml.kernel.org/r/1398669697-2123-1-git-send-email-oren@scalemp.com [ Minor readability edits. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * | | | x86: LLVMLinux: Wrap -mno-80387 with cc-optionBehan Webster2014-04-221-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Wrap -mno-80387 gcc options with cc-option so they don't break clang. Signed-off-by: Behan Webster <behanw@converseincode.com> Cc: torvalds@linux-foundation.org Cc: dwmw2@infradead.org Cc: pageexec@freemail.hu Link: http://lkml.kernel.org/r/1398145227-25053-1-git-send-email-behanw@converseincode.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
* | | | | Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2014-05-023-19/+51
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull KVM fixes from Paolo Bonzini: - Fix for a Haswell regression in nested virtualization, introduced during the merge window. - A fix from Oleg to async page faults. - A bunch of small ARM changes. - A trivial patch to use the new MSI-X API introduced during the merge window. * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: ARM: vgic: Fix the overlap check action about setting the GICD & GICC base address. KVM: arm/arm64: vgic: fix GICD_ICFGR register accesses KVM: async_pf: mm->mm_users can not pin apf->mm KVM: ARM: vgic: Fix sgi dispatch problem MAINTAINERS: co-maintainance of KVM/{arm,arm64} arm: KVM: fix possible misalignment of PGDs and bounce page KVM: x86: Check for host supported fields in shadow vmcs kvm: Use pci_enable_msix_exact() instead of pci_enable_msix() ARM: KVM: disable KVM in Kconfig on big-endian systems
| * \ \ \ \ Merge tag 'kvm-arm-for-3.15-rc4' of ↵Paolo Bonzini2014-04-302-7/+10
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-master First round of KVM/ARM Fixes for 3.15 Includes vgic fixes, a possible kernel corruption bug due to misalignment of pages and disabling of KVM in KConfig on big-endian systems, because the last one breaks the build.
| | * | | | | arm: KVM: fix possible misalignment of PGDs and bounce pageMark Salter2014-04-281-6/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The kvm/mmu code shared by arm and arm64 uses kalloc() to allocate a bounce page (if hypervisor init code crosses page boundary) and hypervisor PGDs. The problem is that kalloc() does not guarantee the proper alignment. In the case of the bounce page, the page sized buffer allocated may also cross a page boundary negating the purpose and leading to a hang during kvm initialization. Likewise the PGDs allocated may not meet the minimum alignment requirements of the underlying MMU. This patch uses __get_free_page() to guarantee the worst case alignment needs of the bounce page and PGDs on both arm and arm64. Cc: <stable@vger.kernel.org> # 3.10+ Signed-off-by: Mark Salter <msalter@redhat.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| | * | | | | ARM: KVM: disable KVM in Kconfig on big-endian systemsWill Deacon2014-04-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | KVM currently crashes and burns on big-endian hosts, so don't allow it to be selected until we've got that fixed. Cc: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| * | | | | | KVM: x86: Check for host supported fields in shadow vmcsBandan Das2014-04-281-12/+41
| |/ / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We track shadow vmcs fields through two static lists, one for read only and another for r/w fields. However, with addition of new vmcs fields, not all fields may be supported on all hosts. If so, copy_vmcs12_to_shadow() trying to vmwrite on unsupported hosts will result in a vmwrite error. For example, commit 36be0b9deb23161 introduced GUEST_BNDCFGS, which is not supported by all processors. Filter out host unsupported fields before letting guests use shadow vmcs Signed-off-by: Bandan Das <bsd@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* | | | | | Merge branch 'for-linus' of ↵Linus Torvalds2014-05-021-1/+0
|\ \ \ \ \ \ | |_|_|_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 fixes from Martin Schwidefsky: "Two bug fixes, one to fix a potential information leak in the BPF jit and common-io-layer fix for old firmware levels" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/bpf,jit: initialize A register if 1st insn is BPF_S_LDX_B_MSH s390/chsc: fix SEI usage on old FW levels
| * | | | | s390/bpf,jit: initialize A register if 1st insn is BPF_S_LDX_B_MSHMartin Schwidefsky2014-04-251-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The A register needs to be initialized to zero in the prolog if the first instruction of the BPF program is BPF_S_LDX_B_MSH to prevent leaking the content of %r5 to user space. Cc: <stable@vger.kernel.org> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | | | | Merge branch 'parisc-3.15-3' of ↵Linus Torvalds2014-05-012-8/+2
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux Pull parisc fixes from Helge Deller: "Drop the architecture-specifc value for_STK_LIM_MAX to fix stack related problems with GNU make" * 'parisc-3.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Use generic uapi/asm/resource.h file parisc: remove _STK_LIM_MAX override
| * | | | | | parisc: Use generic uapi/asm/resource.h fileHelge Deller2014-05-012-7/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Helge Deller <deller@gmx.de>
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-24 17:28:11 +0000