[PATCH 1/2] KVM: arm64: Invalidate EL1&0 TLB entries for all VMIDs in nvhe hyp init

[Will Deacon <will@kernel.org>]

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: 1025c8c0c6ac ("KVM: arm64: Wrap the host with a stage 2")
Signed-off-by: Will Deacon <will@kernel.org>
---
 arch/arm64/kvm/hyp/nvhe/hyp-init.S | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/kvm/hyp/nvhe/hyp-init.S b/arch/arm64/kvm/hyp/nvhe/hyp-init.S
index 07120b37da35..401af1835be6 100644
--- a/arch/arm64/kvm/hyp/nvhe/hyp-init.S
+++ b/arch/arm64/kvm/hyp/nvhe/hyp-init.S
@@ -130,7 +130,7 @@ 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
-- 
2.46.0.76.ge559c4bf1a-goog