Re: [PATCH] KVM: arm64: Fix unaligned addr case in mmu walking
From: Marc Zyngier <maz@kernel.org>
Date: 2021-03-04 09:57:19
Also in:
kvmarm, lkml
From: Marc Zyngier <maz@kernel.org>
Date: 2021-03-04 09:57:19
Also in:
kvmarm, lkml
On Wed, 3 Mar 2021 10:42:25 +0800, Jia He wrote:
If the start addr is not aligned with the granule size of that level. loop step size should be adjusted to boundary instead of simple kvm_granual_size(level) increment. Otherwise, some mmu entries might miss the chance to be walked through. E.g. Assume the unmap range [data->addr, data->end] is [0xff00ab2000,0xff00cb2000] in level 2 walking and NOT block mapping. And the 1st part of that pmd entry is [0xff00ab2000,0xff00c00000]. The pmd value is 0x83fbd2c1002 (not valid entry). In this case, data->addr should be adjusted to 0xff00c00000 instead of 0xff00cb2000. [...]
Applied to fixes, thanks!
[1/1] KVM: arm64: Fix unaligned addr case in mmu walking
commit: e85583b3f1fe62c9b371a3100c1c91af94005ca9
Cheers,
M.
--
Without deviation from the norm, progress is not possible.
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