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FROMGIT: KVM: arm64: Invalidate EL1&0 TLB entries for all VMIDs in nvhe hyp init

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When initialising the nVHE hypervisor, we invalidate potentially stale
TLB entries for the EL1&0 regime using a 'vmalls12e1' invalidation.
However, this invalidation operation applies only to the active VMID
and therefore we could proceed with stale TLB entries for other VMIDs.

Replace the operation with an 'alle1' which applies to all entries for
the EL1&0 regime, regardless of the VMID.

Cc: Marc Zyngier <maz@kernel.org>
Cc: Oliver Upton <oliver.upton@linux.dev>
Fixes: 1025c8c0c6 ("KVM: arm64: Wrap the host with a stage 2")
Signed-off-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20240814123429.20457-2-will@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
(cherry picked from commit dc0dddb1d6
 kvmarm/next)
Bug: 311571169
Signed-off-by: Will Deacon <willdeacon@google.com>
Change-Id: Ib116a4b3b08501e84340ce63ea6cded67824c7aa
This commit is contained in:
Will Deacon 2024-08-14 13:34:28 +01:00 committed by Treehugger Robot
parent 3f4c0346d3
commit c7e69c2cf0
1 changed files with 1 additions and 1 deletions
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2
arch/arm64/kvm/hyp/nvhe/hyp-init.S
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@ -141,7 +141,7 @@ alternative_else_nop_endif
/* Invalidate the stale TLBs from Bootloader */
tlbi alle2
tlbi vmalls12e1
tlbi alle1
dsb sy
mov_q x0, INIT_SCTLR_EL2_MMU_ON