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-rw-r--r--arch/arm64/kernel/head.S9
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S
index 6ebd204da16a..4203d5f257bc 100644
--- a/arch/arm64/kernel/head.S
+++ b/arch/arm64/kernel/head.S
@@ -758,7 +758,7 @@ ENTRY(__early_cpu_boot_status)
*/
.section ".idmap.text", "ax"
__enable_mmu:
- mrs x18, sctlr_el1 // preserve old SCTLR_EL1 value
+ mrs x22, sctlr_el1 // preserve old SCTLR_EL1 value
mrs x1, ID_AA64MMFR0_EL1
ubfx x2, x1, #ID_AA64MMFR0_TGRAN_SHIFT, 4
cmp x2, #ID_AA64MMFR0_TGRAN_SUPPORTED
@@ -786,14 +786,15 @@ __enable_mmu:
* to take into account by discarding the current kernel mapping and
* creating a new one.
*/
- msr sctlr_el1, x18 // disable the MMU
+ msr sctlr_el1, x22 // disable the MMU
isb
bl __create_page_tables // recreate kernel mapping
msr sctlr_el1, x19 // re-enable the MMU
isb
- ic ialluis // flush instructions fetched
- isb // via old mapping
+ ic iallu // flush instructions fetched
+ dsb nsh // via old mapping
+ isb
add x27, x27, x23 // relocated __mmap_switched
#endif
br x27