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KVM: arm64: Ensure target address is granule-aligned for range TLBI
commit 4c36a15 upstream. When zapping a table entry in stage2_try_break_pte(), we issue range TLB invalidation for the region that was mapped by the table. However, we neglect to align the base address down to the granule size and so if we ended up reaching the table entry via a misaligned address then we will accidentally skip invalidation for some prefix of the affected address range. Align 'ctx->addr' down to the granule size when performing TLB invalidation for an unmapped table in stage2_try_break_pte(). Cc: Raghavendra Rao Ananta <rananta@google.com> Cc: Gavin Shan <gshan@redhat.com> Cc: Shaoqin Huang <shahuang@redhat.com> Cc: Quentin Perret <qperret@google.com> Fixes: defc8cc ("KVM: arm64: Invalidate the table entries upon a range") Signed-off-by: Will Deacon <will@kernel.org> Reviewed-by: Shaoqin Huang <shahuang@redhat.com> Reviewed-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20240327124853.11206-5-will@kernel.org Signed-off-by: Oliver Upton <oliver.upton@linux.dev> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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