From f47a4d91e5186d333ced47ac1520fed03cd24f1e Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Wed, 10 Mar 2021 13:32:53 +0000 Subject: [PATCH] FROMGIT: KVM: arm64: Use INIT_SCTLR_EL2_MMU_OFF to disable the MMU on KVM teardown Instead of doing a RMW on SCTLR_EL2 to disable the MMU, use the existing define that loads the right set of bits. Acked-by: Will Deacon Acked-by: Mark Rutland Signed-off-by: Marc Zyngier (cherry picked from commit bc6ddaa67abc9345370b219d07b079d25665f868 git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next) Signed-off-by: Will Deacon Bug: 178098380 Test: atest VirtualizationHostTestCases on an EL2-enabled device Change-Id: I4e2538939f1306953cdd28e2a696d659fc8479ad --- arch/arm64/kvm/hyp/nvhe/hyp-init.S | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/arm64/kvm/hyp/nvhe/hyp-init.S b/arch/arm64/kvm/hyp/nvhe/hyp-init.S index c164045af238..621b2a749aab 100644 --- a/arch/arm64/kvm/hyp/nvhe/hyp-init.S +++ b/arch/arm64/kvm/hyp/nvhe/hyp-init.S @@ -226,9 +226,7 @@ SYM_CODE_START(__kvm_handle_stub_hvc) mov x0, xzr reset: /* Reset kvm back to the hyp stub. */ - mrs x5, sctlr_el2 - mov_q x6, SCTLR_ELx_FLAGS - bic x5, x5, x6 // Clear SCTL_M and etc + mov_q x5, INIT_SCTLR_EL2_MMU_OFF pre_disable_mmu_workaround msr sctlr_el2, x5 isb