Sometimes, we only modify the last one byte of a pte to update status bit,
for example, clear_bit is used to clear r/w bit in linux kernel and 'andb'
instruction is used in this function, in this case, kvm_mmu_pte_write will
treat it as misaligned access, and the shadow page table is zapped
Signed
On 07/27/2011 05:15 PM, Avi Kivity wrote:
> On 07/26/2011 02:31 PM, Xiao Guangrong wrote:
>> Sometimes, we only modify the last one byte of a pte to update status bit,
>> for example, clear_bit is used to clear r/w bit in linux kernel and 'andb'
>> instruction is used in this function, in this case
On 07/26/2011 02:31 PM, Xiao Guangrong wrote:
Sometimes, we only modify the last one byte of a pte to update status bit,
for example, clear_bit is used to clear r/w bit in linux kernel and 'andb'
instruction is used in this function, in this case, kvm_mmu_pte_write will
treat it as misaligned acc
Sometimes, we only modify the last one byte of a pte to update status bit,
for example, clear_bit is used to clear r/w bit in linux kernel and 'andb'
instruction is used in this function, in this case, kvm_mmu_pte_write will
treat it as misaligned access, and the shadow page table is zapped
Signed
