On Fri, Jan 15, 2021 at 05:53:07PM +0800, Keqian Zhu wrote:
> When align the end address, ought to use its original value.
>
> Fixes: b1e57de62cfb ("KVM: arm64: Add stand-alone page-table walker
> infrastructure")
> Signed-off-by: Keqian Zhu <[email protected]>
> ---
> arch/arm64/kvm/hyp/pgtable.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm64/kvm/hyp/pgtable.c b/arch/arm64/kvm/hyp/pgtable.c
> index bdf8e55ed308..670b0ef12440 100644
> --- a/arch/arm64/kvm/hyp/pgtable.c
> +++ b/arch/arm64/kvm/hyp/pgtable.c
> @@ -296,7 +296,7 @@ int kvm_pgtable_walk(struct kvm_pgtable *pgt, u64 addr,
> u64 size,
> struct kvm_pgtable_walk_data walk_data = {
> .pgt = pgt,
> .addr = ALIGN_DOWN(addr, PAGE_SIZE),
> - .end = PAGE_ALIGN(walk_data.addr + size),
> + .end = PAGE_ALIGN(addr + size),
> .walker = walker,
Hmm, this is a change in behaviour, no (consider the case where both 'addr'
and 'size' are misaligned)? The current code is consistent with the
kerneldoc in asm/kvm_pgtable.h, so I don't see the motivation to change it.
Did you hit a bug somewhere?
Will
