https://github.com/torvalds/linux
Revision b1979a5fda7869a790f4fd83fb06c78498d26ba1 authored by Ingo Molnar on 12 May 2008, 19:21:15 UTC, committed by Thomas Gleixner on 23 May 2008, 16:16:15 UTC
CR4 manipulation is not protected against interrupts and preemption, but KVM uses smp_function_call to manipulate the X86_CR4_VMXE bit either from the CPU hotplug code or from the kvm_init call. We need to protect the CR4 manipulation from both interrupts and preemption. Original bug report: http://lkml.org/lkml/2008/5/7/48 Bugzilla entry: http://bugzilla.kernel.org/show_bug.cgi?id=10642 This is not a regression from 2.6.25, it's a long standing and hard to trigger bug. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Tip revision: b1979a5fda7869a790f4fd83fb06c78498d26ba1 authored by Ingo Molnar on 12 May 2008, 19:21:15 UTC
x86: prevent PGE flush from interruption/preemption
x86: prevent PGE flush from interruption/preemption
Tip revision: b1979a5
| File | Mode | Size |
|---|---|---|
| Documentation | ||
| arch | ||
| block | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| usr | ||
| virt | ||
| .gitignore | -rw-r--r-- | 676 bytes |
| .mailmap | -rw-r--r-- | 3.6 KB |
| COPYING | -rw-r--r-- | 18.3 KB |
| CREDITS | -rw-r--r-- | 90.5 KB |
| Kbuild | -rw-r--r-- | 2.4 KB |
| MAINTAINERS | -rw-r--r-- | 97.8 KB |
| Makefile | -rw-r--r-- | 53.8 KB |
| README | -rw-r--r-- | 16.5 KB |
| REPORTING-BUGS | -rw-r--r-- | 3.1 KB |
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