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author | David S. Miller <davem@davemloft.net> | 2010-04-21 04:14:25 -0400 |
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committer | David S. Miller <davem@davemloft.net> | 2010-04-21 04:14:25 -0400 |
commit | 87eb367003887cdc81a5d183efea227b5b488961 (patch) | |
tree | 40f617e25a9364d573e3cd2189c9e7fa56c8a0fe /drivers/lguest/x86/core.c | |
parent | ccb7c7732e2ceb4e81a7806faf1670be9681ccd2 (diff) | |
parent | 05d17608a69b3ae653ea5c9857283bef3439c733 (diff) |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/wireless/iwlwifi/iwl-6000.c
net/core/dev.c
Diffstat (limited to 'drivers/lguest/x86/core.c')
-rw-r--r-- | drivers/lguest/x86/core.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/lguest/x86/core.c b/drivers/lguest/x86/core.c index fb2b7ef7868e..b4eb675a807e 100644 --- a/drivers/lguest/x86/core.c +++ b/drivers/lguest/x86/core.c | |||
@@ -288,6 +288,18 @@ static int emulate_insn(struct lg_cpu *cpu) | |||
288 | insn = lgread(cpu, physaddr, u8); | 288 | insn = lgread(cpu, physaddr, u8); |
289 | 289 | ||
290 | /* | 290 | /* |
291 | * Around 2.6.33, the kernel started using an emulation for the | ||
292 | * cmpxchg8b instruction in early boot on many configurations. This | ||
293 | * code isn't paravirtualized, and it tries to disable interrupts. | ||
294 | * Ignore it, which will Mostly Work. | ||
295 | */ | ||
296 | if (insn == 0xfa) { | ||
297 | /* "cli", or Clear Interrupt Enable instruction. Skip it. */ | ||
298 | cpu->regs->eip++; | ||
299 | return 1; | ||
300 | } | ||
301 | |||
302 | /* | ||
291 | * 0x66 is an "operand prefix". It means it's using the upper 16 bits | 303 | * 0x66 is an "operand prefix". It means it's using the upper 16 bits |
292 | * of the eax register. | 304 | * of the eax register. |
293 | */ | 305 | */ |