kernel_optimize_test/arch/x86/power
Shaohua Li 8ae06d223f x86-32, resume: do a global tlb flush in S4 resume
Colin King reported a strange oops in S4 resume code path (see below). The test
system has i5/i7 CPU. The kernel doesn't open PAE, so 4M page table is used.
The oops always happen a virtual address 0xc03ff000, which is mapped to the
last 4k of first 4M memory. Doing a global tlb flush fixes the issue.

EIP: 0060:[<c0493a01>] EFLAGS: 00010086 CPU: 0
EIP is at copy_loop+0xe/0x15
EAX: 36aeb000 EBX: 00000000 ECX: 00000400 EDX: f55ad46c
ESI: 0f800000 EDI: c03ff000 EBP: f67fbec4 ESP: f67fbea8
DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
...
...
CR2: 00000000c03ff000

Tested-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
LKML-Reference: <20100305005932.GA22675@sli10-desk.sh.intel.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: <stable@kernel.org>
2010-03-30 11:46:02 -07:00
..
cpu.c hw-breakpoints: Rewrite the hw-breakpoints layer on top of perf events 2009-11-08 15:34:42 +01:00
hibernate_32.c x86, hibernate: fix breakage on x86_32 with CONFIG_NUMA set 2008-11-12 23:28:51 +01:00
hibernate_64.c pm: rework includes, remove arch ifdefs 2009-04-01 08:59:16 -07:00
hibernate_asm_32.S x86-32, resume: do a global tlb flush in S4 resume 2010-03-30 11:46:02 -07:00
hibernate_asm_64.S x86: use _types.h headers in asm where available 2009-02-13 11:35:01 -08:00
Makefile x86: Fix resume from suspend when CONFIG_CC_STACKPROTECTOR 2009-07-08 13:20:13 +02:00