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hv: bug fix on synchronizing with APs

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Using eax will truncate the high 32bit part of 64bit virtual address.
And the type of sync is unsigned long, so using rbx instead of ebx.

Signed-off-by: Zheng, Gen <gen.zheng@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
This commit is contained in:
Zheng, Gen 2018-04-18 14:10:19 +08:00 committed by Jack Ren
parent b37c049ef4
commit 1c57adc8b3
1 changed files with 3 additions and 3 deletions
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6
hypervisor/arch/x86/cpu.c
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@ -732,11 +732,11 @@ static void print_hv_banner(void)
static void pcpu_sync_sleep(unsigned long *sync, int mask_bit)
{
int wake_sync = (1 << mask_bit);
uint64_t wake_sync = (1UL << mask_bit);
if (get_monitor_cap()) {
/* Wait for the event to be set using monitor/mwait */
asm volatile ("1: cmpl %%ebx,(%%eax)\n"
asm volatile ("1: cmpq %%rbx,(%%rax)\n"
" je 2f\n"
" monitor\n"
" mwait\n"
@ -748,7 +748,7 @@ static void pcpu_sync_sleep(unsigned long *sync, int mask_bit)
: "cc");
} else {
/* Wait for the event to be set using pause */
asm volatile ("1: cmpl %%ebx,(%%eax)\n"
asm volatile ("1: cmpq %%rbx,(%%rax)\n"
" je 2f\n"
" pause\n"
" jmp 1b\n"