- 07 1月, 2014 1 次提交
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由 Paul Gortmaker 提交于
None of these files are actually using any __init type directives and hence don't need to include <linux/init.h>. Most are just a left over from __devinit and __cpuinit removal, or simply due to code getting copied from one driver to the next. [ hpa: undid incorrect removal from arch/x86/kernel/head_32.S ] Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com> Link: http://lkml.kernel.org/r/1389054026-12947-1-git-send-email-paul.gortmaker@windriver.comSigned-off-by: NH. Peter Anvin <hpa@zytor.com>
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- 07 11月, 2013 1 次提交
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由 Fenghua Yu 提交于
In reboot and crash path, when we shut down the local APIC, the I/O APIC is still active. This may cause issues because external interrupts can still come in and disturb the local APIC during shutdown process. To quiet external interrupts, disable I/O APIC before shutdown local APIC. Signed-off-by: NFenghua Yu <fenghua.yu@intel.com> Link: http://lkml.kernel.org/r/1382578212-4677-1-git-send-email-fenghua.yu@intel.com Cc: <stable@kernel.org> [ I suppose the 'issue' is a hang during shutdown. It's a fine change nevertheless. ] Signed-off-by: NIngo Molnar <mingo@kernel.org>
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- 20 8月, 2013 1 次提交
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由 Yoshihiro YUNOMAE 提交于
Prevent crash_kexec() from deadlocking on ioapic_lock. When crash_kexec() is executed on a CPU, the CPU will take ioapic_lock in disable_IO_APIC(). So if the cpu gets an NMI while locking ioapic_lock, a deadlock will happen. In this patch, ioapic_lock is zapped/initialized before disable_IO_APIC(). You can reproduce this deadlock the following way: 1. Add mdelay(1000) after raw_spin_lock_irqsave() in native_ioapic_set_affinity()@arch/x86/kernel/apic/io_apic.c Although the deadlock can occur without this modification, it will increase the potential of the deadlock problem. 2. Build and install the kernel 3. Set up the OS which will run panic() and kexec when NMI is injected # echo "kernel.unknown_nmi_panic=1" >> /etc/sysctl.conf # vim /etc/default/grub add "nmi_watchdog=0 crashkernel=256M" in GRUB_CMDLINE_LINUX line # grub2-mkconfig 4. Reboot the OS 5. Run following command for each vcpu on the guest # while true; do echo <CPU num> > /proc/irq/<IO-APIC-edge or IO-APIC-fasteoi>/smp_affinitity; done; By running this command, cpus will get ioapic_lock for setting affinity. 6. Inject NMI (push a dump button or execute 'virsh inject-nmi <domain>' if you use VM). After injecting NMI, panic() is called in an nmi-handler context. Then, kexec will normally run in panic(), but the operation will be stopped by deadlock on ioapic_lock in crash_kexec()->machine_crash_shutdown()-> native_machine_crash_shutdown()->disable_IO_APIC()->clear_IO_APIC()-> clear_IO_APIC_pin()->ioapic_read_entry(). Signed-off-by: NYoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Gleb Natapov <gleb@redhat.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com> Cc: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Cc: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: yrl.pp-manager.tt@hitachi.com Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Seiji Aguchi <seiji.aguchi@hds.com> Link: http://lkml.kernel.org/r/20130820070107.28245.83806.stgit@yunodevelSigned-off-by: NIngo Molnar <mingo@kernel.org>
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- 12 12月, 2012 1 次提交
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由 Zhang Yanfei 提交于
This removes the sparse warning: arch/x86/kernel/crash.c:49:32: sparse: incompatible types in comparison expression (different address spaces) Reported-by: Nkbuild test robot <fengguang.wu@intel.com> Signed-off-by: NZhang Yanfei <zhangyanfei@cn.fujitsu.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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- 07 12月, 2012 1 次提交
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由 Zhang Yanfei 提交于
This patch provides a way to VMCLEAR VMCSs related to guests on all cpus before executing the VMXOFF when doing kdump. This is used to ensure the VMCSs in the vmcore updated and non-corrupted. Signed-off-by: NZhang Yanfei <zhangyanfei@cn.fujitsu.com> Acked-by: NEric W. Biederman <ebiederm@xmission.com> Signed-off-by: NGleb Natapov <gleb@redhat.com>
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- 10 10月, 2011 1 次提交
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由 Don Zickus 提交于
Just convert all the files that have an nmi handler to the new routines. Most of it is straight forward conversion. A couple of places needed some tweaking like kgdb which separates the debug notifier from the nmi handler and mce removes a call to notify_die. [Thanks to Ying for finding out the history behind that mce call https://lkml.org/lkml/2010/5/27/114 And Boris responding that he would like to remove that call because of it https://lkml.org/lkml/2011/9/21/163] The things that get converted are the registeration/unregistration routines and the nmi handler itself has its args changed along with code removal to check which list it is on (most are on one NMI list except for kgdb which has both an NMI routine and an NMI Unknown routine). Signed-off-by: NDon Zickus <dzickus@redhat.com> Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: NCorey Minyard <minyard@acm.org> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Robert Richter <robert.richter@amd.com> Cc: Huang Ying <ying.huang@intel.com> Cc: Corey Minyard <minyard@acm.org> Cc: Jack Steiner <steiner@sgi.com> Link: http://lkml.kernel.org/r/1317409584-23662-4-git-send-email-dzickus@redhat.comSigned-off-by: NIngo Molnar <mingo@elte.hu>
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- 22 7月, 2010 1 次提交
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由 Cliff Wickman 提交于
UV NMI callback's should not write stack dumps when a kdump is to be written. When invoking the crash kernel to write a dump, kdump_nmi_shootdown_cpus() uses NMI's to get all the cpu's to save their register context and halt. But the NMI interrupt handler runs a callback list. This patch sets a flag to prevent any of those callbacks from interfering with the halt of the cpu. For UV, which currently has the only callback to which this is relevant, the uv_handle_nmi() callback should not do dumping of stacks. The 'in_crash_kexec' flag is defined as an extern in kdebug.h firstly because x2apic_uv_x.c includes it. Secondly because some future callback might need the flag to know that it should not enter the debugger. (Such a scenario was in fact present in the 2.6.32 kernel, SuSE distribution, where a call to kdb needed to be avoided.) Signed-off-by: NCliff Wickman <cpw@sgi.com> LKML-Reference: <E1ObLvt-0005UZ-Va@eag09.americas.sgi.com> Signed-off-by: NH. Peter Anvin <hpa@linux.intel.com>
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- 07 4月, 2010 1 次提交
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由 Chris Wright 提交于
This effectively reverts commit 61d047be. Disabling the IOMMU can potetially allow DMA transactions to complete without being translated. Leave it enabled, and allow crash kernel to do the IOMMU reinitialization properly. Cc: stable@kernel.org Cc: Joerg Roedel <joerg.roedel@amd.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Neil Horman <nhorman@tuxdriver.com> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: NChris Wright <chrisw@sous-sol.org> Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>
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- 08 11月, 2009 1 次提交
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由 FUJITA Tomonori 提交于
This patch cleans up pci_iommu_shutdown() a bit to use x86_platform (similar to how IA64 initializes an IOMMU driver). This adds iommu_shutdown() to x86_platform to avoid calling every IOMMUs' shutdown functions in pci_iommu_shutdown() in order. The IOMMU shutdown functions are platform specific (we don't have multiple different IOMMU hardware) so the current way is pointless. An IOMMU driver sets x86_platform.iommu_shutdown to the shutdown function if necessary. Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: joerg.roedel@amd.com LKML-Reference: <20091027163358F.fujita.tomonori@lab.ntt.co.jp> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 15 6月, 2009 1 次提交
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由 Joerg Roedel 提交于
If the IOMMUs are still enabled when the kexec kernel boots access to the disk is not possible. This is bad for tools like kdump or anything else which wants to use PCI devices. Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>
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- 18 2月, 2009 2 次提交
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由 Ingo Molnar 提交于
Impact: cleanup Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Ingo Molnar 提交于
Impact: cleanup Remove genapic.h and remove all references to it. Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 29 1月, 2009 1 次提交
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由 Ingo Molnar 提交于
Move mach_ipi.h definitions into genapic.h. Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 08 1月, 2009 1 次提交
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由 Jaswinder Singh Rajput 提交于
Impact: cleanup Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 31 12月, 2008 1 次提交
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由 Eduardo Habkost 提交于
We need to disable virtualization extensions on all CPUs before booting the kdump kernel, otherwise the kdump kernel booting will fail, and rebooting after the kdump kernel did its task may also fail. We do it using cpu_emergency_vmxoff() and cpu_emergency_svm_disable(), that should always work, because those functions check if the CPUs support SVM or VMX before doing their tasks. Signed-off-by: NEduardo Habkost <ehabkost@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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- 17 12月, 2008 1 次提交
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由 Mike Travis 提交于
Impact: cleanup, change parameter passing * Change genapic interfaces to accept cpumask_t pointers where possible. * Modify external callers to use cpumask_t pointers in function calls. * Create new send_IPI_mask_allbutself which is the same as the send_IPI_mask functions but removes smp_processor_id() from list. This removes another common need for a temporary cpumask_t variable. * Functions that used a temp cpumask_t variable for: cpumask_t allbutme = cpu_online_map; cpu_clear(smp_processor_id(), allbutme); if (!cpus_empty(allbutme)) ... become: if (!cpus_equal(cpu_online_map, cpumask_of_cpu(cpu))) ... * Other minor code optimizations (like using cpus_clear instead of CPU_MASK_NONE, etc.) Applies to linux-2.6.tip/master. Signed-off-by: NMike Travis <travis@sgi.com> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Acked-by: NIngo Molnar <mingo@elte.hu>
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- 13 11月, 2008 6 次提交
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由 Eduardo Habkost 提交于
Impact: make nmi_shootdown_cpus() available to the rest of the x86 platform Now nmi_shootdown_cpus() is ready to be used by non-kdump code also. Move it to reboot.c. Signed-off-by: NEduardo Habkost <ehabkost@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Eduardo Habkost 提交于
Impact: make API available to the rest of x86 platform code Add prototype to asm/reboot.h. Signed-off-by: NEduardo Habkost <ehabkost@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Eduardo Habkost 提交于
Impact: extend nmi_shootdown_cpus() with a callback The reboot code will use a different function on crash_nmi_callback(). Adding a function pointer parameter to nmi_shootdown_cpus() for that. Signed-off-by: NEduardo Habkost <ehabkost@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Eduardo Habkost 提交于
Impact: cleanup For the kdump-specific code that was living on nmi_shootdown_cpus(). Signed-off-by: NEduardo Habkost <ehabkost@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Eduardo Habkost 提交于
Impact: cleanup This variable will be moved to non-kdump-specific code. Signed-off-by: NEduardo Habkost <ehabkost@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Eduardo Habkost 提交于
Impact: cleanup The NMI CPU-halting code will be used on non-kdump cases, also (e.g. emergency_reboot when virtualization is enabled). Signed-off-by: NEduardo Habkost <ehabkost@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 27 4月, 2008 1 次提交
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由 Glauber Costa 提交于
This patch a llows machine_crash_shutdown to be replaced, just like any of the other functions in machine_ops Signed-off-by: NGlauber Costa <gcosta@redhat.com> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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- 17 4月, 2008 1 次提交
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由 Glauber Costa 提交于
take them out of the x86_64-only asm/mach_apic.h Signed-off-by: NGlauber Costa <gcosta@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 04 12月, 2007 1 次提交
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由 OGAWA Hirofumi 提交于
we should also add hpet_disable() for kdump. Signed-off-by: NOGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 24 10月, 2007 2 次提交
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由 Mike Galbraith 提交于
X86_32 build fix to commit 62a31a03Signed-off-by: NMike Galbraith <efault@gmx.de> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Hiroshi Shimamoto 提交于
Most of contents in crash are same. Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 11 10月, 2007 2 次提交
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由 Thomas Gleixner 提交于
Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Thomas Gleixner 提交于
Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 09 5月, 2007 1 次提交
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由 Christoph Hellwig 提交于
This patch moves the die notifier handling to common code. Previous various architectures had exactly the same code for it. Note that the new code is compiled unconditionally, this should be understood as an appel to the other architecture maintainer to implement support for it aswell (aka sprinkling a notify_die or two in the proper place) arm had a notifiy_die that did something totally different, I renamed it to arm_notify_die as part of the patch and made it static to the file it's declared and used at. avr32 used to pass slightly less information through this interface and I brought it into line with the other architectures. [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: fix vmalloc_sync_all bustage] [bryan.wu@analog.com: fix vmalloc_sync_all in nommu] Signed-off-by: NChristoph Hellwig <hch@lst.de> Cc: <linux-arch@vger.kernel.org> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: NBryan Wu <bryan.wu@analog.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 08 12月, 2006 1 次提交
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由 Magnus Damm 提交于
The elf note saving code is currently duplicated over several architectures. This cleanup patch simply adds code to a common file and then replaces the arch-specific code with calls to the newly added code. The only drawback with this approach is that s390 doesn't fully support kexec-on-panic which for that arch leads to introduction of unused code. Signed-off-by: NMagnus Damm <magnus@valinux.co.jp> Cc: Vivek Goyal <vgoyal@in.ibm.com> Cc: Andi Kleen <ak@suse.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 01 10月, 2006 2 次提交
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由 Fernando Vazquez 提交于
Re-implement smp_send_nmi_allbutself() so that calls to smp_processor_id (through send_IPI_allbutself) can be replaced with safe_smp_processor_id without affecting other parts of the kernel (as suggested by Eric Biederman). Signed-off-by: NFernando Vazquez <fernando@intellilink.co.jp> Looks-reasonable-to: Andi Kleen <ak@muc.de> Acked-by: N"Eric W. Biederman" <ebiederm@xmission.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Fernando Vazquez 提交于
Substitute "smp_processor_id" with the stack overflow-safe "safe_smp_processor_id" in the reboot path to the second kernel. [akpm@osdl.org: build fix] Signed-off-by: NFernando Vazquez <fernando@intellilink.co.jp> Looks-reasonable-to: Andi Kleen <ak@muc.de> Acked-by: N"Eric W. Biederman" <ebiederm@xmission.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 26 9月, 2006 2 次提交
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由 Vivek Goyal 提交于
After a crash we should wait for NMI IPI event and not for external NMI or NMI watchdog tick. Signed-off-by: NVivek Goyal <vgoyal@in.ibm.com> Signed-off-by: NAndi Kleen <ak@suse.de> Cc: Don Zickus <dzickus@redhat.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@osdl.org>
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由 Don Zickus 提交于
Removes the un/set_nmi_callback and reserve/release_lapic_nmi functions as they are no longer needed. The various subsystems are modified to register with the die_notifier instead. Also includes compile fixes by Andrew Morton. Signed-off-by: NDon Zickus <dzickus@redhat.com> Signed-off-by: NAndi Kleen <ak@suse.de>
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- 15 7月, 2006 1 次提交
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由 Eric W. Biederman 提交于
This patch removes the foolish assumption that SMP implied local apics. That assumption is not-true on the Voyager subarch. This makes that dependency explicit, and allows the code to build. What gets disabled is just an optimization to get better crash dumps so the support should work if there is a kernel that will initialization on the voyager subarch under those harsh conditions. Hopefully we can figure out how to initialize apics in init_IRQ and remove the need to disable io_apics and this dependency. Signed-off-by: NEric W. Biederman <ebiederm@xmission.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 27 6月, 2006 2 次提交
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由 Keith Owens 提交于
x86_64 and i386 behave inconsistently when sending an IPI on vector 2 (NMI_VECTOR). Make both behave the same, so IPI 2 is sent as NMI. The crash code was abusing send_IPI_allbutself() by passing a code instead of a vector, it only worked because crash knew about the internal code of send_IPI_allbutself(). Change crash to use NMI_VECTOR instead, and remove the comment about how crash was abusing the function. This patch is a pre-requisite for fixing the problem where sending an IPI as NMI would reboot some Dell Xeon systems. I cannot fix that problem while crash continus to abuse send_IPI_allbutself(). It also removes the inconsistency between i386 and x86_64 for NMI_VECTOR. That will simplify all the RAS code that needs to bring all the cpus to a clean stop, even when one or more cpus are spinning disabled. Signed-off-by: NKeith Owens <kaos@sgi.com> Signed-off-by: NAndi Kleen <ak@suse.de> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Lee Revell 提交于
In a testament to the utter simplicity and logic of the English language ;-), I found a single correct use - in kernel/panic.c - and 10-15 incorrect ones. Signed-Off-By: NLee Revell <rlrevell@joe-job.com> Signed-off-by: NAdrian Bunk <bunk@stusta.de>
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- 26 6月, 2006 1 次提交
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由 Chuck Ebbert 提交于
Add cpu_relax() to infinite loops in crash.c and doublefault.c. This is the safest change. Signed-off-by: NChuck Ebbert <76306.1226@compuserve.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 01 4月, 2006 1 次提交
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由 Horms 提交于
kexec: grammar fix for crash_save_this_cpu() Signed-Off-By: NHorms <horms@verge.net.au> Signed-off-by: NAdrian Bunk <bunk@stusta.de>
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