kernel_optimize_test/arch/x86
Mark Langsdorf 394a15051c x86: invalidate caches before going into suspend
When a CPU core is shut down, all of its caches need to be flushed
to prevent stale data from causing errors if the core is resumed.
Current Linux suspend code performs an assignment after the flush,
which can add dirty data back to the cache.  On some AMD platforms,
additional speculative reads have caused crashes on resume because
of this dirty data.

Relocate the cache flush to be the very last thing done before
halting.  Tie into an assembly line so the compile will not
reorder it.  Add some documentation explaining what is going
on and why we're doing this.

Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com>
Acked-by: Mark Borden <mark.borden@amd.com>
Acked-by: Michael Hohmuth <michael.hohmuth@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-15 14:04:30 +02:00
..
boot x86: cleanup for setup code crashes during IST probe 2008-08-14 00:13:52 +02:00
configs Subject: devmem, x86: fix rename of CONFIG_NONPROMISC_DEVMEM 2008-07-20 08:35:55 +02:00
crypto
ia32 tracehook: exec 2008-07-26 12:00:08 -07:00
kernel x86: invalidate caches before going into suspend 2008-08-15 14:04:30 +02:00
kvm KVM: Advertise synchronized mmu support to userspace 2008-07-29 12:34:02 +03:00
lguest lguest: set max_pfn_mapped, growl loudly at Yinghai Lu 2008-07-29 09:58:31 +10:00
lib x86: wrong register was used in align macro 2008-07-30 10:10:39 -07:00
mach-default x86: add ->pre_time_init to x86_quirks 2008-07-20 09:25:52 +02:00
mach-es7000 x86: move the last Dprintk instance to pr_debug() 2008-07-21 21:58:34 +02:00
mach-generic
mach-rdc321x
mach-voyager Merge branch 'generic-ipi' into generic-ipi-for-linus 2008-07-15 21:55:59 +02:00
math-emu
mm x86: don't call e820_regiter_active_regions if out of range on node 2008-08-14 11:35:52 +02:00
oprofile x86/oprofile/nmi_int: add Nehalem to list of ppro cores 2008-07-24 17:29:00 -07:00
pci x86: silence mmconfig printk 2008-08-15 13:52:39 +02:00
power
vdso Merge branches 'x86/urgent', 'x86/amd-iommu', 'x86/apic', 'x86/cleanups', 'x86/core', 'x86/cpu', 'x86/fixmap', 'x86/gart', 'x86/kprobes', 'x86/memtest', 'x86/modules', 'x86/nmi', 'x86/pat', 'x86/reboot', 'x86/setup', 'x86/step', 'x86/unify-pci', 'x86/uv', 'x86/xen' and 'xen-64bit' into x86/for-linus 2008-07-21 16:37:17 +02:00
video
xen xen: don't use sysret for sysexit32 2008-07-24 12:28:12 +02:00
Kconfig mm: Make generic weak get_user_pages_fast and EXPORT_GPL it 2008-08-12 17:52:53 +10:00
Kconfig.cpu x86: fix crash due to missing debugctlmsr on AMD K6-3 2008-07-22 14:16:37 +02:00
Kconfig.debug x86: Fix help message for STRICT_DEVMEM config option 2008-07-21 13:04:08 -07:00
Makefile x86, RDC321x: add to mach-default 2008-07-26 13:51:46 +02:00
Makefile_32.cpu