diff options
| author | Shaohua Li <[email protected]> | 2010-03-05 08:59:32 +0800 |
|---|---|---|
| committer | H. Peter Anvin <[email protected]> | 2010-03-30 11:46:02 -0700 |
| commit | 8ae06d223f8203c72104e5c0c4ee49a000aedb42 (patch) | |
| tree | 42bf4c176833a42e21009d8bd0a61e653d4c3418 /tools/perf/util/trace-event-scripting.c | |
| parent | eed63519e3e74d515d2007ecd895338d0ba2a85c (diff) | |
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 <[email protected]>
Signed-off-by: Shaohua Li <[email protected]>
LKML-Reference: <[email protected]>
Acked-by: Rafael J. Wysocki <[email protected]>
Signed-off-by: H. Peter Anvin <[email protected]>
Cc: <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions