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authorDavid S. Miller <davem@davemloft.net>2010-04-21 04:14:25 -0400
committerDavid S. Miller <davem@davemloft.net>2010-04-21 04:14:25 -0400
commit87eb367003887cdc81a5d183efea227b5b488961 (patch)
tree40f617e25a9364d573e3cd2189c9e7fa56c8a0fe /drivers/lguest/x86/core.c
parentccb7c7732e2ceb4e81a7806faf1670be9681ccd2 (diff)
parent05d17608a69b3ae653ea5c9857283bef3439c733 (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.c12
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 */