From: Will Deacon Date: Wed, 14 Aug 2024 12:34:28 +0000 (+0100) Subject: KVM: arm64: Invalidate EL1&0 TLB entries for all VMIDs in nvhe hyp init X-Git-Tag: v6.12-rc1~11^2~13^2~7^2~1 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=dc0dddb1d66de88c571cf1a5bc3b484521a578af;p=linux-block.git KVM: arm64: Invalidate EL1&0 TLB entries for all VMIDs in nvhe hyp init 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 Cc: Oliver Upton Fixes: 1025c8c0c6ac ("KVM: arm64: Wrap the host with a stage 2") Signed-off-by: Will Deacon Link: https://lore.kernel.org/r/20240814123429.20457-2-will@kernel.org Signed-off-by: Marc Zyngier --- 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