Merge branch 'kvm-arm64/host-stage2' into kvmarm-master/queue
Signed-off-by: Marc Zyngier <maz@kernel.org>
diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
index d4a5fca9..70cbb02 100644
--- a/arch/arm64/include/asm/sysreg.h
+++ b/arch/arm64/include/asm/sysreg.h
@@ -579,9 +579,6 @@
#define SCTLR_ELx_A (BIT(1))
#define SCTLR_ELx_M (BIT(0))
-#define SCTLR_ELx_FLAGS (SCTLR_ELx_M | SCTLR_ELx_A | SCTLR_ELx_C | \
- SCTLR_ELx_SA | SCTLR_ELx_I | SCTLR_ELx_IESB)
-
/* SCTLR_EL2 specific flags. */
#define SCTLR_EL2_RES1 ((BIT(4)) | (BIT(5)) | (BIT(11)) | (BIT(16)) | \
(BIT(18)) | (BIT(22)) | (BIT(23)) | (BIT(28)) | \
@@ -593,6 +590,10 @@
#define ENDIAN_SET_EL2 0
#endif
+#define INIT_SCTLR_EL2_MMU_ON \
+ (SCTLR_ELx_M | SCTLR_ELx_C | SCTLR_ELx_SA | SCTLR_ELx_I | \
+ SCTLR_ELx_IESB | SCTLR_ELx_WXN | ENDIAN_SET_EL2 | SCTLR_EL2_RES1)
+
#define INIT_SCTLR_EL2_MMU_OFF \
(SCTLR_EL2_RES1 | ENDIAN_SET_EL2)
diff --git a/arch/arm64/kernel/cpu-reset.S b/arch/arm64/kernel/cpu-reset.S
index 37721eb..d47ff63 100644
--- a/arch/arm64/kernel/cpu-reset.S
+++ b/arch/arm64/kernel/cpu-reset.S
@@ -30,10 +30,7 @@
* flat identity mapping.
*/
SYM_CODE_START(__cpu_soft_restart)
- /* Clear sctlr_el1 flags. */
- mrs x12, sctlr_el1
- mov_q x13, SCTLR_ELx_FLAGS
- bic x12, x12, x13
+ mov_q x12, INIT_SCTLR_EL1_MMU_OFF
pre_disable_mmu_workaround
/*
* either disable EL1&0 translation regime or disable EL2&0 translation
diff --git a/arch/arm64/kvm/hyp/nvhe/hyp-init.S b/arch/arm64/kvm/hyp/nvhe/hyp-init.S
index c164045..c953fb4b 100644
--- a/arch/arm64/kvm/hyp/nvhe/hyp-init.S
+++ b/arch/arm64/kvm/hyp/nvhe/hyp-init.S
@@ -122,13 +122,7 @@
tlbi vmalls12e1
dsb sy
- /*
- * Preserve all the RES1 bits while setting the default flags,
- * as well as the EE bit on BE. Drop the A flag since the compiler
- * is allowed to generate unaligned accesses.
- */
- mov_q x0, (SCTLR_EL2_RES1 | (SCTLR_ELx_FLAGS & ~SCTLR_ELx_A))
-CPU_BE( orr x0, x0, #SCTLR_ELx_EE)
+ mov_q x0, INIT_SCTLR_EL2_MMU_ON
alternative_if ARM64_HAS_ADDRESS_AUTH
mov_q x1, (SCTLR_ELx_ENIA | SCTLR_ELx_ENIB | \
SCTLR_ELx_ENDA | SCTLR_ELx_ENDB)
@@ -226,9 +220,7 @@
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
