On bootup, the rdx register contains information about the processor. The
function which calculates this value has the bugs:
- missing 'cpuid' to get the value from the processor
- missing register clobber caused a miscompilation in some circumstances
- we shouldn't return a value that depends on the current processor in
case we migrate
In any case nobody looks at the value, so just return a generic P6
identifier.
Thanks to Christian Hesse <[email protected]> for debugging help.
Signed-off-by: Avi Kivity <[email protected]>
Index: linux-2.6/drivers/kvm/kvm_main.c
===================================================================
--- linux-2.6.orig/drivers/kvm/kvm_main.c
+++ linux-2.6/drivers/kvm/kvm_main.c
@@ -1052,12 +1052,7 @@ static void set_cr8(struct kvm_vcpu *vcp
static u32 get_rdx_init_val(void)
{
- u32 val;
-
- asm ("movl $1, %%eax \n\t"
- "movl %%eax, %0 \n\t" : "=g"(val) );
- return val;
-
+ return 0x600; /* P6 family */
}
static void fx_init(struct kvm_vcpu *vcpu)
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
