AuxXxilium/linux_dsm_epyc7002
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6cc3efcdf0
linux_dsm_epyc7002/arch/ia64/kernel
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Hidetoshi Seto 6cc3efcdf0 [IA64] kexec: Unregister MCA handler before kexec 
Summary:

  MCA on the beginning of kdump/kexec kernel will result in unexpected
  behavior because MCA handler for previous kernel is invoked on the
  kdump kernel.

Description:

  Once a cpu is passed to new kernel, all resources in previous kernel
  should not be used from the cpu.  Even the resources for MCA handler
  are no exception.  So we cannot handle MCAs and its machine check
  errors during kernel transition, until new handler for new kernel is
  registered with new resources ready for handling the MCA.

How to reproduce:

  Assert MCA while kdump kernel is booting, before new MCA handler for
  kdump kernel is registered.

Expected(Desirable) results:

  No recovery, cancel kdump and reboot the system.

Actual results:

  MCA handler for previous kernel is invoked on the kdump kernel.
  => panic, hang etc. (unexpected)

Proposed fix:

  To avoid entering MCA handler from early stage of new kernel,
  unregister the entry point from SAL before leave from current
  kernel.  Then SAL will make all MCAs to warmboot safely, without
  invoking OS_MCA.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Haren Myneni <hbabu@us.ibm.com>
Cc: kexec@lists.infradead.org
Acked-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-09-14 16:18:17 -07:00
..
cpufreq [IA64] improper printk format in acpi-cpufreq 2008-07-17 11:11:17 -07:00
.gitignore [IA64] Cleanup generated file not ignored by .gitignore 2008-08-04 11:06:16 -07:00
acpi-ext.c Pull acpi_os_free into release branch 2006-07-01 17:19:08 -04:00
acpi-processor.c ACPI: pdc init related memory leak with physical CPU hotplug 2009-06-20 00:50:52 -04:00
acpi.c irq: change ACPI GSI APIs to also take a device argument 2009-04-28 12:21:17 +02:00
asm-offsets.c ia64/pv_ops/xen: paravirtualize read/write ar.itc and ar.itm 2009-03-26 10:50:32 -07:00
audit.c [PATCH] audit signal recipients 2007-05-11 05:38:25 -04:00
brl_emu.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
crash_dump.c kdump: make elfcorehdr_addr independent of CONFIG_PROC_VMCORE 2008-10-20 08:52:39 -07:00
crash.c [IA64] kdump: Mask MCA/INIT on frozen cpus 2009-09-14 16:17:05 -07:00
cyclone.c clocksource: pass clocksource to read() callback 2009-04-21 13:41:47 -07:00
dma-mapping.c [IA64] Fix warning in dma-mapping.c 2009-09-02 09:12:21 -07:00
efi_stub.S [IA64] make efi_stub.S fit in 80 cols 2006-06-21 14:35:28 -07:00
efi.c [IA64] Convert ia64 to use int-ll64.h 2009-06-17 09:33:49 -07:00
entry.h Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
entry.S [IA64] hook up new rt_tgsigqueueinfo syscall 2009-06-16 13:13:41 -07:00
err_inject.c sysdev: Pass the attribute to the low level sysdev show/store function 2008-07-21 21:55:02 -07:00
esi_stub.S [IA64] esi-support 2006-06-21 11:19:22 -07:00
esi.c [IA64] Remove unnecessary semicolons 2009-06-30 14:18:32 -07:00
fsys.S ia64/pv_ops: paravirtualize mov = ar.itc. 2009-03-26 10:50:22 -07:00
fsyscall_gtod_data.h [IA64] generalize attribute of fsyscall_gtod_data 2008-02-04 15:36:36 -08:00
ftrace.c ftrace, ia64: IA64 dynamic ftrace support 2009-01-14 12:11:31 +01:00
gate-data.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
gate.lds.S ia64/pv_ops: gate page paravirtualization. 2009-03-26 10:51:02 -07:00
gate.S ia64/pv_ops: paravirtualize gate.S. 2009-03-26 11:01:46 -07:00
head.S [IA64] kdump: Mask MCA/INIT on frozen cpus 2009-09-14 16:17:05 -07:00
ia64_ksyms.c IA64: includecheck fix: ia64, ia64_ksyms.c 2009-08-11 14:52:10 -07:00
init_task.c mm: consolidate init_mm definition 2009-06-16 19:47:28 -07:00
iosapic.c arch/ia64/kernel/iosapic: missing test after ioremap() 2009-08-11 14:52:11 -07:00
irq_ia64.c [IA64] remove obsolete irq_desc_t typedef 2009-06-15 14:34:31 -07:00
irq_lsapic.c [IA64] remove obsolete hw_interrupt_type 2009-06-15 14:35:10 -07:00
irq.c [IA64] remove obsolete irq_desc_t typedef 2009-06-15 14:34:31 -07:00
ivt.S ia64/pv_ops: paravirtualize mov = ar.itc. 2009-03-26 10:50:22 -07:00
jprobes.S [IA64] Move include/asm-ia64 to arch/ia64/include/asm 2008-08-01 10:21:21 -07:00
kprobes.c kprobes: check CONFIG_FREEZER instead of CONFIG_PM 2009-01-16 14:32:17 -05:00
machine_kexec.c [IA64] kexec: Unregister MCA handler before kexec 2009-09-14 16:18:17 -07:00
machvec.c x86, ia64: convert to use generic dma_map_ops struct 2009-01-06 14:06:57 +01:00
Makefile Merge branch 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-04-05 11:04:19 -07:00
Makefile.gate ia64/pv_ops: gate page paravirtualization. 2009-03-26 10:51:02 -07:00
mca_asm.S [IA64] kexec: Make INIT safe while transition to 2009-09-14 16:18:02 -07:00
mca_drv_asm.S [IA64] mca style cleanup 2008-02-04 15:42:06 -08:00
mca_drv.c CRED: Wrap task credential accesses in the IA64 arch 2008-11-14 10:38:37 +11:00
mca_drv.h [IA64] mca style cleanup 2008-02-04 15:42:06 -08:00
mca.c Pull for-2.6.31 into release 2009-06-17 09:35:24 -07:00
minstate.h [IA64] pvops: paravirtualize minstate.h. 2008-05-27 15:02:17 -07:00
module.c [IA64] Convert ia64 to use int-ll64.h 2009-06-17 09:33:49 -07:00
msi_ia64.c [IA64] msi_ia64.c dmar_msi_type should be static 2009-06-15 14:35:54 -07:00
nr-irqs.c ia64/pv_ops/xen: define the nubmer of irqs which xen needs. 2008-10-17 10:06:59 -07:00
numa.c [IA64] Minimize per_cpu reservations. 2008-04-08 13:51:35 -07:00
pal.S [IA64] reformat pal.S to fit in 80 columns, fix typos 2006-10-17 14:54:19 -07:00
palinfo.c [IA64] Convert ia64 to use int-ll64.h 2009-06-17 09:33:49 -07:00
paravirt_inst.h ia64/pv_ops: paravirtualized instruction checker. 2008-10-17 10:12:54 -07:00
paravirt_patch.c ia64/pv_op/binarypatch: add helper functions to support binary patching for paravirt_ops. 2009-03-26 11:02:31 -07:00
paravirt_patchlist.c [IA64] Fix build error in paravirt_patchlist.c 2009-06-17 09:04:40 -07:00
paravirt_patchlist.h ia64/pv_ops: gate page paravirtualization. 2009-03-26 10:51:02 -07:00
paravirt.c ia64: remove some warnings. 2009-03-27 11:11:04 -07:00
paravirtentry.S ia64/pv_ops: implement binary patching optimization for native. 2009-03-26 11:02:42 -07:00
patch.c ia64: remove some warnings. 2009-03-27 11:11:04 -07:00
pci-dma.c Bug Fix arch/ia64/kernel/pci-dma.c: fix recursive dma_supported() call in iommu_dma_supported() 2009-08-11 14:52:10 -07:00
pci-swiotlb.c Intel IOMMU Pass Through Support 2009-04-29 06:54:34 +01:00
perfmon_default_smpl.c [IA64] remove remaining __FUNCTION__ occurrences 2008-03-06 09:19:27 -08:00
perfmon_generic.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
perfmon_itanium.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
perfmon_mckinley.h [IA64] spelling fixes: arch/ia64/ 2007-05-11 14:55:43 -07:00
perfmon_montecito.h [IA64] sparse cleanups 2006-12-07 10:48:19 -08:00
perfmon.c [IA64] address compiler warnings perfmon.c/salinfo.c 2009-06-30 14:26:34 -07:00
process.c Simplify copy_thread() 2009-04-02 19:04:51 -07:00
ptrace.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
relocate_kernel.S [IA64] Removal of percpu TR cleanup in kexec code 2007-05-08 10:00:28 -07:00
sal.c [IA64] Update check_sal_cache_flush to use platform_send_ipi() 2008-06-11 16:40:33 -07:00
salinfo.c [IA64] address compiler warnings perfmon.c/salinfo.c 2009-06-30 14:26:34 -07:00
setup.c [IA64] Convert ia64 to use int-ll64.h 2009-06-17 09:33:49 -07:00
sigframe.h [IA64] Add TIF_RESTORE_SIGMASK 2007-05-08 14:51:59 -07:00
signal.c CRED: Wrap task credential accesses in the IA64 arch 2008-11-14 10:38:37 +11:00
smp.c [IA64] Convert ia64 to use int-ll64.h 2009-06-17 09:33:49 -07:00
smpboot.c [IA64] Convert ia64 to use int-ll64.h 2009-06-17 09:33:49 -07:00
sys_ia64.c [CVE-2009-0029] Remove __attribute__((weak)) from sys_pipe/sys_pipe2 2009-01-14 14:15:15 +01:00
time.c [IA64] Convert ia64 to use int-ll64.h 2009-06-17 09:33:49 -07:00
topology.c ia64/topology.c: exit cache_add_dev when kobject_init_and_add fails 2009-08-11 14:52:11 -07:00
traps.c [IA64] honor notify_die() returning NOTIFY_STOP 2008-02-05 08:26:44 -08:00
unaligned.c [IA64] dump stack on kernel unaligned warnings 2009-01-15 10:38:56 -08:00
uncached.c Pull for-2.6.31 into release 2009-06-17 09:35:24 -07:00
unwind_decoder.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
unwind_i.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
unwind.c [IA64] Do not go beyond ARRAY_SIZE of unw.hash 2009-02-25 11:48:04 -08:00
vmlinux.lds.S Pull pvops into release branch 2009-03-31 14:25:08 -07:00