diff options
| author | Marcelo Tosatti <mtosatti@redhat.com> | 2008-12-08 23:12:49 -0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2008-12-28 11:31:57 +0200 |
| commit | 89313757eba60cf76d2284ba9a7e1a11d42db39c (patch) | |
| tree | 520c35f5560d26b6488b6dc6bce2ef5019f81e02 /bios | |
| parent | f937ff7296edb04cd49e3aa888d164332e5b33b9 (diff) | |
kvm: bios: revert TSC zeroing
The TSC is zeroed at RESET, and not at SMP initialization.
This avoids the TSC from going out of sync between vcpu's on SMP
guests.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'bios')
| -rwxr-xr-x | bios/rombios32.c | 6 | ||||
| -rw-r--r-- | bios/rombios32start.S | 4 |
2 files changed, 0 insertions, 10 deletions
diff --git a/bios/rombios32.c b/bios/rombios32.c index 321563da..fd6ff713 100755 --- a/bios/rombios32.c +++ b/bios/rombios32.c @@ -623,12 +623,6 @@ void smp_probe(void) writel(APIC_BASE + APIC_ICR_LOW, 0x000C4500); sipi_vector = AP_BOOT_ADDR >> 12; writel(APIC_BASE + APIC_ICR_LOW, 0x000C4600 | sipi_vector); - asm volatile( - "xor %%eax, %%eax \n\t" - "xor %%edx, %%edx \n\t" - "mov $0x10, %%ecx \n\t" - "wrmsr" - : : : "eax", "ecx", "edx"); #ifndef BX_QEMU delay_ms(10); diff --git a/bios/rombios32start.S b/bios/rombios32start.S index 335e3efd..c9bc045b 100644 --- a/bios/rombios32start.S +++ b/bios/rombios32start.S @@ -50,10 +50,6 @@ smp_ap_boot_code_start: cli xor %ax, %ax mov %ax, %ds - xor %eax, %eax - xor %edx, %edx - mov $0x10, %ecx - wrmsr mov $SMP_MSR_ADDR, %ebx 11: |