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* | gpio: realtek-otto: Support per-cpu interruptsSander Vanheule2022-04-111-1/+74
| | | | | | | | | | | | | | | | | | | | | | | | On SoCs with multiple cores, it is possible that the GPIO interrupt controller supports assigning specific pins to one or more cores. IRQ balancing can be performed on a line-by-line basis if the parent interrupt is routed to all available cores, which is the default upon initialisation. Signed-off-by: Sander Vanheule <sander@svanheule.net> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
* | gpio: realtek-otto: Support reversed port layoutsSander Vanheule2022-04-111-4/+51
| | | | | | | | | | | | | | | | | | | | The GPIO port layout on the RTL930x SoC series is reversed compared to the RTL838x and RTL839x SoC series. Add new port offset calculator functions to ensure the correct order is used when reading port IRQ data, and ensure bgpio uses the right byte ordering. Signed-off-by: Sander Vanheule <sander@svanheule.net> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
* | dt-bindings: gpio: realtek-otto: Add rtl9300 compatibleSander Vanheule2022-04-111-2/+31
| | | | | | | | | | | | | | | | | | | | Add the "realtek,rlt9300-gpio", "realtek,otto-gpio" compatible for GPIO nodes on the RTL930x SoC series. This SoC requires an extra register range, defining the interrupt CPU mapping registers. Signed-off-by: Sander Vanheule <sander@svanheule.net> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
* | gpiolib: Extract gpio_chip_get_value() wrapperAndy Shevchenko2022-04-091-4/+7
| | | | | | | | | | | | | | | | In couple of cases we are using the same code to wrap ->get() callback. Extract that code into a helper for the sake of better maintenance. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
* | gpiolib: Refactor gpiolib_dbg_show() with help of for_each_gpio_desc()Andy Shevchenko2022-04-091-20/+18
| | | | | | | | | | | | | | | | | | | | | | | | Use for_each_gpio_desc() and since we would need to touch the entire conditionals, do the following: - rename last occurrence of gdesc to desc - use short ternary operator ?: - join two seq_printf() calls into single one - fix indentation of the seq_printf() parameters Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
* | gpiolib: Split out for_each_gpio_desc() macroAndy Shevchenko2022-04-092-9/+7
| | | | | | | | | | | | | | | | In some cases we want to traverse all GPIO descriptors for given chip, let's split out for_each_gpio_desc() macro for such cases. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
* | gpiolib: Embed iterator variable into for_each_gpio_desc_with_flag()Andy Shevchenko2022-04-094-10/+7
| | | | | | | | | | | | | | | | | | | | The iterator loop is used exclusively to get a descriptor, which in its turn is what is being used by the caller. Embed the iterator variable into the loop in the for_each_gpio_desc_with_flag() macro helper. Suggested-by: Bartosz Golaszewski <brgl@bgdev.pl> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
* | gpiolib: Move error message out of a spinlockAndy Shevchenko2022-04-091-1/+1
| | | | | | | | | | | | | | | | An error path is a slow path, no need to block other CPUs when printing error messages. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
* | gpio: rcar: Add R-Car Gen4 supportGeert Uytterhoeven2022-04-051-2/+5
| | | | | | | | | | | | | | | | | | | | R-Car V3U (R8A779A0) was the first member of the R-Car Gen4 family. Generalize the support for R-Car V3U to other SoCs in the R-Car Gen4 family by adding a family-specific compatible value. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
* | dt-bindings: gpio: renesas,rcar-gpio: Add r8a779f0 supportGeert Uytterhoeven2022-04-051-0/+5
| | | | | | | | | | | | | | | | | | | | Document support for the GPIO controller blocks in the Renesas R-Car S4-8 (R8A779F0) SoC, including a new family-specific compatible value for the R-Car Gen4 family. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
* | gpiolib: Get rid of redundant 'else'Andy Shevchenko2022-04-052-38/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the snippets like the following if (...) return / goto / break / continue ...; else ... the 'else' is redundant. Get rid of it. In case of IOCTLs use switch-case pattern that seems the usual in such cases. While at it, clarify necessity of else in gpiod_direction_output() by attaching else if to the closing curly brace on a previous line. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
* | dt-bindings: gpio: uniphier: Add hogs parsingKunihiko Hayashi2022-04-041-0/+17
|/ | | | | | | | | | | | Allow parsing GPIO controller children nodes with GPIO hogs to fix the following warning: uniphier-ld11-ref.dtb: gpio@55000000: 'xirq0-hog' does not match any of the regexes: 'pinctrl-[0-9]+' From schema: Documentation/devicetree/bindings/gpio/socionext,uniphier-gpio.yaml Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
* Linux 5.18-rc1v5.18-rc1Linus Torvalds2022-04-031-2/+2
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* Merge tag 'trace-v5.18-2' of ↵Linus Torvalds2022-04-0315-167/+44
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull more tracing updates from Steven Rostedt: - Rename the staging files to give them some meaning. Just stage1,stag2,etc, does not show what they are for - Check for NULL from allocation in bootconfig - Hold event mutex for dyn_event call in user events - Mark user events to broken (to work on the API) - Remove eBPF updates from user events - Remove user events from uapi header to keep it from being installed. - Move ftrace_graph_is_dead() into inline as it is called from hot paths and also convert it into a static branch. * tag 'trace-v5.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing: Move user_events.h temporarily out of include/uapi ftrace: Make ftrace_graph_is_dead() a static branch tracing: Set user_events to BROKEN tracing/user_events: Remove eBPF interfaces tracing/user_events: Hold event_mutex during dyn_event_add proc: bootconfig: Add null pointer check tracing: Rename the staging files for trace_events
| * tracing: Move user_events.h temporarily out of include/uapiSteven Rostedt (Google)2022-04-022-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While user_events API is under development and has been marked for broken to not let the API become fixed, move the header file out of the uapi directory. This is to prevent it from being installed, then later changed, and then have an old distro user space update with a new kernel, where applications see the user_events being available, but the old header is in place, and then they get compiled incorrectly. Also, surround the include with CONFIG_COMPILE_TEST to the current location, but when the BROKEN tag is taken off, it will use the uapi directory, and fail to compile. This is a good way to remind us to move the header back. Link: https://lore.kernel.org/all/20220330155835.5e1f6669@gandalf.local.home Link: https://lkml.kernel.org/r/20220330201755.29319-1-mathieu.desnoyers@efficios.com Link: https://lkml.kernel.org/r/20220401143903.188384f3@gandalf.local.home Suggested-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
| * ftrace: Make ftrace_graph_is_dead() a static branchChristophe Leroy2022-04-022-15/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ftrace_graph_is_dead() is used on hot paths, it just reads a variable in memory and is not worth suffering function call constraints. For instance, at entry of prepare_ftrace_return(), inlining it avoids saving prepare_ftrace_return() parameters to stack and restoring them after calling ftrace_graph_is_dead(). While at it using a static branch is even more performant and is rather well adapted considering that the returned value will almost never change. Inline ftrace_graph_is_dead() and replace 'kill_ftrace_graph' bool by a static branch. The performance improvement is noticeable. Link: https://lkml.kernel.org/r/e0411a6a0ed3eafff0ad2bc9cd4b0e202b4617df.1648623570.git.christophe.leroy@csgroup.eu Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
| * tracing: Set user_events to BROKENSteven Rostedt (Google)2022-04-021-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | After being merged, user_events become more visible to a wider audience that have concerns with the current API. It is too late to fix this for this release, but instead of a full revert, just mark it as BROKEN (which prevents it from being selected in make config). Then we can work finding a better API. If that fails, then it will need to be completely reverted. Link: https://lore.kernel.org/all/2059213643.196683.1648499088753.JavaMail.zimbra@efficios.com/ Link: https://lkml.kernel.org/r/20220330155835.5e1f6669@gandalf.local.home Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
| * tracing/user_events: Remove eBPF interfacesBeau Belgrave2022-04-023-136/+4
| | | | | | | | | | | | | | | | | | | | | | | | Remove eBPF interfaces within user_events to ensure they are fully reviewed. Link: https://lore.kernel.org/all/20220329165718.GA10381@kbox/ Link: https://lkml.kernel.org/r/20220329173051.10087-1-beaub@linux.microsoft.com Suggested-by: Alexei Starovoitov <alexei.starovoitov@gmail.com> Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
| * tracing/user_events: Hold event_mutex during dyn_event_addBeau Belgrave2022-04-021-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | Make sure the event_mutex is properly held during dyn_event_add call. This is required when adding dynamic events. Link: https://lkml.kernel.org/r/20220328223225.1992-1-beaub@linux.microsoft.com Reported-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
| * proc: bootconfig: Add null pointer checkLv Ruyi2022-04-021-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | kzalloc is a memory allocation function which can return NULL when some internal memory errors happen. It is safer to add null pointer check. Link: https://lkml.kernel.org/r/20220329104004.2376879-1-lv.ruyi@zte.com.cn Cc: stable@vger.kernel.org Fixes: c1a3c36017d4 ("proc: bootconfig: Add /proc/bootconfig to show boot config list") Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
| * tracing: Rename the staging files for trace_eventsSteven Rostedt (Google)2022-04-029-14/+14
| | | | | | | | | | | | | | | | | | | | | | | | When looking for implementation of different phases of the creation of the TRACE_EVENT() macro, it is pretty useless when all helper macro redefinitions are in files labeled "stageX_defines.h". Rename them to state which phase the files are for. For instance, when looking for the defines that are used to create the event fields, seeing "stage4_event_fields.h" gives the developer a good idea that the defines are in that file. Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
* | Merge tag 'clk-for-linus' of ↵Linus Torvalds2022-04-032-136/+14
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux Pull clk fix from Stephen Boyd: "A single revert to fix a boot regression seen when clk_put() started dropping rate range requests. It's best to keep various systems booting so we'll kick this out and try again next time" * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: Revert "clk: Drop the rate range on clk_put()"
| * | Revert "clk: Drop the rate range on clk_put()"Stephen Boyd2022-04-022-136/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 7dabfa2bc4803eed83d6f22bd6f045495f40636b. There are multiple reports that this breaks boot on various systems. The common theme is that orphan clks are having rates set on them when that isn't expected. Let's revert it out for now so that -rc1 boots. Reported-by: Marek Szyprowski <m.szyprowski@samsung.com> Reported-by: Tony Lindgren <tony@atomide.com> Reported-by: Alexander Stein <alexander.stein@ew.tq-group.com> Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org> Link: https://lore.kernel.org/r/366a0232-bb4a-c357-6aa8-636e398e05eb@samsung.com Cc: Maxime Ripard <maxime@cerno.tech> Signed-off-by: Stephen Boyd <sboyd@kernel.org> Link: https://lore.kernel.org/r/20220403022818.39572-1-sboyd@kernel.org
* | | Merge tag 'x86-urgent-2022-04-03' of ↵Linus Torvalds2022-04-036-187/+200
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Thomas Gleixner: "A set of x86 fixes and updates: - Make the prctl() for enabling dynamic XSTATE components correct so it adds the newly requested feature to the permission bitmap instead of overwriting it. Add a selftest which validates that. - Unroll string MMIO for encrypted SEV guests as the hypervisor cannot emulate it. - Handle supervisor states correctly in the FPU/XSTATE code so it takes the feature set of the fpstate buffer into account. The feature sets can differ between host and guest buffers. Guest buffers do not contain supervisor states. So far this was not an issue, but with enabling PASID it needs to be handled in the buffer offset calculation and in the permission bitmaps. - Avoid a gazillion of repeated CPUID invocations in by caching the values early in the FPU/XSTATE code. - Enable CONFIG_WERROR in x86 defconfig. - Make the X86 defconfigs more useful by adapting them to Y2022 reality" * tag 'x86-urgent-2022-04-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/fpu/xstate: Consolidate size calculations x86/fpu/xstate: Handle supervisor states in XSTATE permissions x86/fpu/xsave: Handle compacted offsets correctly with supervisor states x86/fpu: Cache xfeature flags from CPUID x86/fpu/xsave: Initialize offset/size cache early x86/fpu: Remove unused supervisor only offsets x86/fpu: Remove redundant XCOMP_BV initialization x86/sev: Unroll string mmio with CC_ATTR_GUEST_UNROLL_STRING_IO x86/config: Make the x86 defconfigs a bit more usable x86/defconfig: Enable WERROR selftests/x86/amx: Update the ARCH_REQ_XCOMP_PERM test x86/fpu/xstate: Fix the ARCH_REQ_XCOMP_PERM implementation
| * | | x86/fpu/xstate: Consolidate size calculationsThomas Gleixner2022-03-301-41/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the offset calculation to do the size calculation which avoids yet another series of CPUID instructions for each invocation. [ Fix the FP/SSE only case which missed to take the xstate header into account, as Reported-by: kernel test robot <oliver.sang@intel.com> ] Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lore.kernel.org/r/87o81pgbp2.ffs@tglx
| * | | x86/fpu/xstate: Handle supervisor states in XSTATE permissionsThomas Gleixner2022-03-301-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The size calculation in __xstate_request_perm() fails to take supervisor states into account because the permission bitmap is only relevant for user states. Up to 5.17 this does not matter because there are no supervisor states supported, but the (re-)enabling of ENQCMD makes them available. Fixes: 7c1ef59145f1 ("x86/cpufeatures: Re-enable ENQCMD") Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lore.kernel.org/r/20220324134623.681768598@linutronix.de
| * | | x86/fpu/xsave: Handle compacted offsets correctly with supervisor statesThomas Gleixner2022-03-301-45/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So far the cached fixed compacted offsets worked, but with (re-)enabling of ENQCMD this does no longer work with KVM fpstate. KVM does not have supervisor features enabled for the guest FPU, which means that KVM has then a different XSAVE area layout than the host FPU state. This in turn breaks the copy from/to UABI functions when invoked for a guest state. Remove the pre-calculated compacted offsets and calculate the offset of each component at runtime based on the XCOMP_BV field in the XSAVE header. The runtime overhead is not interesting because these copy from/to UABI functions are not used in critical fast paths. KVM uses them to save and restore FPU state during migration. The host uses them for ptrace and for the slow path of 32bit signal handling. Fixes: 7c1ef59145f1 ("x86/cpufeatures: Re-enable ENQCMD") Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lore.kernel.org/r/20220324134623.627636809@linutronix.de
| * | | x86/fpu: Cache xfeature flags from CPUIDThomas Gleixner2022-03-301-36/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In preparation for runtime calculation of XSAVE offsets cache the feature flags for each XSTATE component during feature enumeration via CPUID(0xD). EDX has two relevant bits: 0 Supervisor component 1 Feature storage must be 64 byte aligned These bits are currently only evaluated during init, but the alignment bit must be cached to make runtime calculation of XSAVE offsets efficient. Cache the full EDX content and use it for the existing alignment and supervisor checks. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lore.kernel.org/r/20220324134623.573656209@linutronix.de
| * | | x86/fpu/xsave: Initialize offset/size cache earlyThomas Gleixner2022-03-301-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Reading XSTATE feature information from CPUID over and over does not make sense. The information has to be cached anyway, so it can be done early. Prepare for runtime calculation of XSTATE offsets and allow consolidation of the size calculation functions in a later step. Rename the function while at it as it does not setup any features. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lore.kernel.org/r/20220324134623.519411939@linutronix.de
| * | | x86/fpu: Remove unused supervisor only offsetsThomas Gleixner2022-03-301-30/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | No users. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lore.kernel.org/r/20220324134623.465066249@linutronix.de
| * | | x86/fpu: Remove redundant XCOMP_BV initializationThomas Gleixner2022-03-291-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fpu_copy_uabi_to_guest_fpstate() initializes the XCOMP_BV field in the XSAVE header. That's a leftover from the old KVM FPU buffer handling code. Since d69c1382e1b7 ("x86/kvm: Convert FPU handling to a single swap buffer") KVM uses the FPU core allocation code, which initializes the XCOMP_BV field already. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lore.kernel.org/r/20220324134623.408932232@linutronix.de
| * | | x86/sev: Unroll string mmio with CC_ATTR_GUEST_UNROLL_STRING_IOJoerg Roedel2022-03-291-8/+57
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The io-specific memcpy/memset functions use string mmio accesses to do their work. Under SEV, the hypervisor can't emulate these instructions because they read/write directly from/to encrypted memory. KVM will inject a page fault exception into the guest when it is asked to emulate string mmio instructions for an SEV guest: BUG: unable to handle page fault for address: ffffc90000065068 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 8000100000067 P4D 8000100000067 PUD 80001000fb067 PMD 80001000fc067 PTE 80000000fed40173 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.17.0-rc7 #3 As string mmio for an SEV guest can not be supported by the hypervisor, unroll the instructions for CC_ATTR_GUEST_UNROLL_STRING_IO enabled kernels. This issue appears when kernels are launched in recent libvirt-managed SEV virtual machines, because virt-install started to add a tpm-crb device to the guest by default and proactively because, raisins: https://github.com/virt-manager/virt-manager/commit/eb58c09f488b0633ed1eea012cd311e48864401e and as that commit says, the default adding of a TPM can be disabled with "virt-install ... --tpm none". The kernel driver for tpm-crb uses memcpy_to/from_io() functions to access MMIO memory, resulting in a page-fault injected by KVM and crashing the kernel at boot. [ bp: Massage and extend commit message. ] Fixes: d8aa7eea78a1 ('x86/mm: Add Secure Encrypted Virtualization (SEV) support') Signed-off-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20220321093351.23976-1-joro@8bytes.org
| * | | x86/config: Make the x86 defconfigs a bit more usableIngo Molnar2022-03-272-26/+63
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Use 'make savedefconfig' to refresh & regenerate the files - Add in KVM boot enablers - Enable the cgroup features most distros rely on [ fix bug found by Nathan Chancellor ] Acked-by: Nathan Chancellor <nathan@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/YjwsUT/6PkRPjnHE@gmail.com
| * | | x86/defconfig: Enable WERRORBorislav Petkov2022-03-242-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To quote Linus: "EVERYBODY should have CONFIG_WERROR=y on at least x86-64 and other serious architectures, unless you have some completely random experimental (and broken) compiler. New compiler warnings are not acceptable." So this should make at least the most obvious and common ones not go unnoticed. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Borislav Petkov <bp@suse.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/YjsCpoRK7W4l6tSh@zn.tnic
| * | | selftests/x86/amx: Update the ARCH_REQ_XCOMP_PERM testChang S. Bae2022-03-231-2/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update the arch_prctl test to check the permission bitmap whether the requested feature is added as expected or not. Every non-dynamic feature that is enabled is permitted already for use. TILECFG is not dynamic feature. Ensure the bit is always on from ARCH_GET_XCOMP_PERM. Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20220129173647.27981-3-chang.seok.bae@intel.com
| * | | x86/fpu/xstate: Fix the ARCH_REQ_XCOMP_PERM implementationYang Zhong2022-03-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ARCH_REQ_XCOMP_PERM is supposed to add the requested feature to the permission bitmap of thread_group_leader()->fpu. But the code overwrites the bitmap with the requested feature bit only rather than adding it. Fix the code to add the requested feature bit to the master bitmask. Fixes: db8268df0983 ("x86/arch_prctl: Add controls for dynamic XSTATE components") Signed-off-by: Yang Zhong <yang.zhong@intel.com> Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Paolo Bonzini <bonzini@gnu.org> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20220129173647.27981-2-chang.seok.bae@intel.com
* | | | Merge tag 'core-urgent-2022-04-03' of ↵Linus Torvalds2022-04-035-69/+1
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull RT signal fix from Thomas Gleixner: "Revert the RT related signal changes. They need to be reworked and generalized" * tag 'core-urgent-2022-04-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: Revert "signal, x86: Delay calling signals in atomic on RT enabled kernels"
| * | | | Revert "signal, x86: Delay calling signals in atomic on RT enabled kernels"Thomas Gleixner2022-03-315-69/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Revert commit bf9ad37dc8a. It needs to be better encapsulated and generalized. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
* | | | | Merge tag 'dma-mapping-5.18-1' of git://git.infradead.org/users/hch/dma-mappingLinus Torvalds2022-04-035-142/+16
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull more dma-mapping updates from Christoph Hellwig: - fix a regression in dma remap handling vs AMD memory encryption (me) - finally kill off the legacy PCI DMA API (Christophe JAILLET) * tag 'dma-mapping-5.18-1' of git://git.infradead.org/users/hch/dma-mapping: dma-mapping: move pgprot_decrypted out of dma_pgprot PCI/doc: cleanup references to the legacy PCI DMA API PCI: Remove the deprecated "pci-dma-compat.h" API
| * | | | | dma-mapping: move pgprot_decrypted out of dma_pgprotChristoph Hellwig2022-04-012-4/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pgprot_decrypted is used by AMD SME systems to allow access to memory that was set to not encrypted using set_memory_decrypted. That only happens for dma-direct memory as the IOMMU solves the addressing challenges for the encryption bit using its own remapping. Move the pgprot_decrypted call out of dma_pgprot which is also used by the IOMMU mappings and into dma-direct so that it is only used with memory that was set decrypted. Fixes: f5ff79fddf0e ("dma-mapping: remove CONFIG_DMA_REMAP") Reported-by: Alex Xu (Hello71) <alex_y_xu@yahoo.ca> Signed-off-by: Christoph Hellwig <hch@lst.de> Tested-by: Alex Xu (Hello71) <alex_y_xu@yahoo.ca>
| * | | | | PCI/doc: cleanup references to the legacy PCI DMA APIChristoph Hellwig2022-03-301-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Mention the regular DMA API calls instead of the now removed PCI DMA API. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Bjorn Helgaas <bhelgaas@google.com>
| * | | | | PCI: Remove the deprecated "pci-dma-compat.h" APIChristophe JAILLET2022-03-302-131/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that all usages of the functions defined in "pci-dma-compat.h" have been removed, it is time to remove this file as well. In order not to break builds, move the "#include <linux/dma-mapping.h>" that was in "pci-dma-compat.h" into "include/linux/pci.h" Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* | | | | | Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds2022-04-034-11/+12
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull ARM fixes from Russell King: - avoid unnecessary rebuilds for library objects - fix return value of __setup handlers - fix invalid input check for "crashkernel=" kernel option - silence KASAN warnings in unwind_frame * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 9191/1: arm/stacktrace, kasan: Silence KASAN warnings in unwind_frame() ARM: 9190/1: kdump: add invalid input check for 'crashkernel=0' ARM: 9187/1: JIVE: fix return value of __setup handler ARM: 9189/1: decompressor: fix unneeded rebuilds of library objects
| * \ \ \ \ \ Merge branches 'fixes' and 'misc' into for-linusRussell King (Oracle)2022-04-0111393-246461/+498591
| |\ \ \ \ \ \
| | * | | | | | ARM: 9189/1: decompressor: fix unneeded rebuilds of library objectsMasahiro Yamada2022-03-311-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit 251cc826be7d ("ARM: 9154/1: decompressor: do not copy source files while building"), the following three are rebuilt every time. AS arch/arm/boot/compressed/lib1funcs.o AS arch/arm/boot/compressed/ashldi3.o AS arch/arm/boot/compressed/bswapsdi2.o Move the "OBJS += ..." line up so these objects are added to 'targets'. Fixes: 251cc826be7d ("ARM: 9154/1: decompressor: do not copy source files while building") Reported-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
| * | | | | | | ARM: 9191/1: arm/stacktrace, kasan: Silence KASAN warnings in unwind_frame()linyujun2022-04-011-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following KASAN warning is detected by QEMU. ================================================================== BUG: KASAN: stack-out-of-bounds in unwind_frame+0x508/0x870 Read of size 4 at addr c36bba90 by task cat/163 CPU: 1 PID: 163 Comm: cat Not tainted 5.10.0-rc1 #40 Hardware name: ARM-Versatile Express [<c0113fac>] (unwind_backtrace) from [<c010e71c>] (show_stack+0x10/0x14) [<c010e71c>] (show_stack) from [<c0b805b4>] (dump_stack+0x98/0xb0) [<c0b805b4>] (dump_stack) from [<c0b7d658>] (print_address_description.constprop.0+0x58/0x4bc) [<c0b7d658>] (print_address_description.constprop.0) from [<c031435c>] (kasan_report+0x154/0x170) [<c031435c>] (kasan_report) from [<c0113c44>] (unwind_frame+0x508/0x870) [<c0113c44>] (unwind_frame) from [<c010e298>] (__save_stack_trace+0x110/0x134) [<c010e298>] (__save_stack_trace) from [<c01ce0d8>] (stack_trace_save+0x8c/0xb4) [<c01ce0d8>] (stack_trace_save) from [<c0313520>] (kasan_set_track+0x38/0x60) [<c0313520>] (kasan_set_track) from [<c0314cb8>] (kasan_set_free_info+0x20/0x2c) [<c0314cb8>] (kasan_set_free_info) from [<c0313474>] (__kasan_slab_free+0xec/0x120) [<c0313474>] (__kasan_slab_free) from [<c0311e20>] (kmem_cache_free+0x7c/0x334) [<c0311e20>] (kmem_cache_free) from [<c01c35dc>] (rcu_core+0x390/0xccc) [<c01c35dc>] (rcu_core) from [<c01013a8>] (__do_softirq+0x180/0x518) [<c01013a8>] (__do_softirq) from [<c0135214>] (irq_exit+0x9c/0xe0) [<c0135214>] (irq_exit) from [<c01a40e4>] (__handle_domain_irq+0xb0/0x110) [<c01a40e4>] (__handle_domain_irq) from [<c0691248>] (gic_handle_irq+0xa0/0xb8) [<c0691248>] (gic_handle_irq) from [<c0100b0c>] (__irq_svc+0x6c/0x94) Exception stack(0xc36bb928 to 0xc36bb970) b920: c36bb9c0 00000000 c0126919 c0101228 c36bb9c0 b76d7730 b940: c36b8000 c36bb9a0 c3335b00 c01ce0d8 00000003 c36bba3c c36bb940 c36bb978 b960: c010e298 c011373c 60000013 ffffffff [<c0100b0c>] (__irq_svc) from [<c011373c>] (unwind_frame+0x0/0x870) [<c011373c>] (unwind_frame) from [<00000000>] (0x0) The buggy address belongs to the page: page:(ptrval) refcount:0 mapcount:0 mapping:00000000 index:0x0 pfn:0x636bb flags: 0x0() raw: 00000000 00000000 ef867764 00000000 00000000 00000000 ffffffff 00000000 page dumped because: kasan: bad access detected addr c36bba90 is located in stack of task cat/163 at offset 48 in frame: stack_trace_save+0x0/0xb4 this frame has 1 object: [32, 48) 'trace' Memory state around the buggy address: c36bb980: f1 f1 f1 f1 00 04 f2 f2 00 00 f3 f3 00 00 00 00 c36bba00: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 >c36bba80: 00 00 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 ^ c36bbb00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 c36bbb80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== There is a same issue on x86 and has been resolved by the commit f7d27c35ddff ("x86/mm, kasan: Silence KASAN warnings in get_wchan()"). The solution could be applied to arm architecture too. Signed-off-by: Lin Yujun <linyujun809@huawei.com> Reported-by: He Ying <heying24@huawei.com> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
| * | | | | | | ARM: 9190/1: kdump: add invalid input check for 'crashkernel=0'Austin Kim2022-04-011-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add invalid input check expression when 'crashkernel=0' is specified running kdump. Signed-off-by: Austin Kim <austindh.kim@gmail.com> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
| * | | | | | | ARM: 9187/1: JIVE: fix return value of __setup handlerRandy Dunlap2022-03-311-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | __setup() handlers should return 1 to obsolete_checksetup() in init/main.c to indicate that the boot option has been handled. A return of 0 causes the boot option/value to be listed as an Unknown kernel parameter and added to init's (limited) argument or environment strings. Also, error return codes don't mean anything to obsolete_checksetup() -- only non-zero (usually 1) or zero. So return 1 from jive_mtdset(). Fixes: 9db829f485c5 ("[ARM] JIVE: Initial machine support for Logitech Jive") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Alim Akhtar <alim.akhtar@samsung.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Cc: patches@armlinux.org.uk Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
* | | | | | | | Merge tag 'perf-tools-for-v5.18-2022-04-02' of ↵Linus Torvalds2022-04-0231-88/+180
|\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux Pull more perf tools updates from Arnaldo Carvalho de Melo: - Avoid SEGV if core.cpus isn't set in 'perf stat'. - Stop depending on .git files for building PERF-VERSION-FILE, used in 'perf --version', fixing some perf tools build scenarios. - Convert tracepoint.py example to python3. - Update UAPI header copies from the kernel sources: socket, mman-common, msr-index, KVM, i915 and cpufeatures. - Update copy of libbpf's hashmap.c. - Directly return instead of using local ret variable in evlist__create_syswide_maps(), found by coccinelle. * tag 'perf-tools-for-v5.18-2022-04-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: perf python: Convert tracepoint.py example to python3 perf evlist: Directly return instead of using local ret variable perf cpumap: More cpu map reuse by merge. perf cpumap: Add is_subset function perf evlist: Rename cpus to user_requested_cpus perf tools: Stop depending on .git files for building PERF-VERSION-FILE tools headers cpufeatures: Sync with the kernel sources tools headers UAPI: Sync drm/i915_drm.h with the kernel sources tools headers UAPI: Sync linux/kvm.h with the kernel sources tools kvm headers arm64: Update KVM headers from the kernel sources tools arch x86: Sync the msr-index.h copy with the kernel sources tools headers UAPI: Sync asm-generic/mman-common.h with the kernel perf beauty: Update copy of linux/socket.h with the kernel sources perf tools: Update copy of libbpf's hashmap.c perf stat: Avoid SEGV if core.cpus isn't set
| * | | | | | | | perf python: Convert tracepoint.py example to python3Tanu M2022-04-011-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert the tracepoint.py file to python3 as many of the files in tools/perf are already written in python3. Committer testing: # export PYTHONPATH=/tmp/build/perf/python/ # python3 ~acme/git/perf/tools/perf/python/tracepoint.py | head time 67394457376909 prev_comm=swapper/12 prev_pid=0 prev_prio=120 prev_state=0x0 ==> next_comm=gnome-terminal- next_pid=3313 next_prio=120 time 67394457807669 prev_comm=python3 prev_pid=1485930 prev_prio=120 prev_state=0x1 ==> next_comm=swapper/13 next_pid=0 next_prio=120 time 67394457811859 prev_comm=swapper/13 prev_pid=0 prev_prio=120 prev_state=0x0 ==> next_comm=python3 next_pid=1485930 next_prio=120 time 67394457824929 prev_comm=python3 prev_pid=1485930 prev_prio=120 prev_state=0x1 ==> next_comm=swapper/13 next_pid=0 next_prio=120 time 67394457831899 prev_comm=swapper/13 prev_pid=0 prev_prio=120 prev_state=0x0 ==> next_comm=python3 next_pid=1485930 next_prio=120 time 67394457842299 prev_comm=python3 prev_pid=1485930 prev_prio=120 prev_state=0x1 ==> next_comm=swapper/13 next_pid=0 next_prio=120 time 67394457844179 prev_comm=swapper/13 prev_pid=0 prev_prio=120 prev_state=0x0 ==> next_comm=python3 next_pid=1485930 next_prio=120 time 67394457853879 prev_comm=python3 prev_pid=1485930 prev_prio=120 prev_state=0x1 ==> next_comm=swapper/13 next_pid=0 next_prio=120 time 67394457856339 prev_comm=swapper/13 prev_pid=0 prev_prio=120 prev_state=0x0 ==> next_comm=python3 next_pid=1485930 next_prio=120 time 67394457865659 prev_comm=python3 prev_pid=1485930 prev_prio=120 prev_state=0x1 ==> next_comm=swapper/13 next_pid=0 next_prio=120 Traceback (most recent call last): File "/var/home/acme/git/perf/tools/perf/python/tracepoint.py", line 48, in <module> main() File "/var/home/acme/git/perf/tools/perf/python/tracepoint.py", line 37, in main print("time %u prev_comm=%s prev_pid=%d prev_prio=%d prev_state=0x%x ==> next_comm=%s next_pid=%d next_prio=%d" % ( BrokenPipeError: [Errno 32] Broken pipe # Signed-off-by: Tanu M <tanu235m@gmail.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/linux-perf-users/CAPS78prawYzRZnyhWjgOnGw4EwoswNwztvfZFdCOPOydFzVwzQ@mail.gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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