diff options
Diffstat (limited to 'arch/arm64/include')
| -rw-r--r-- | arch/arm64/include/asm/kvm_mmu.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h index 3836641dd6f0..a84e2dd14ebe 100644 --- a/arch/arm64/include/asm/kvm_mmu.h +++ b/arch/arm64/include/asm/kvm_mmu.h @@ -85,7 +85,11 @@ */ .macro kern_hyp_va reg alternative_cb kvm_update_va_mask - and \reg, \reg, #1 + and \reg, \reg, #1 /* mask with va_mask */ + ror \reg, \reg, #1 /* rotate to the first tag bit */ + add \reg, \reg, #0 /* insert the low 12 bits of the tag */ + add \reg, \reg, #0, lsl 12 /* insert the top 12 bits of the tag */ + ror \reg, \reg, #63 /* rotate back */ alternative_cb_end .endm @@ -102,7 +106,11 @@ void kvm_update_va_mask(struct alt_instr *alt, static inline unsigned long __kern_hyp_va(unsigned long v) { - asm volatile(ALTERNATIVE_CB("and %0, %0, #1\n", + asm volatile(ALTERNATIVE_CB("and %0, %0, #1\n" + "ror %0, %0, #1\n" + "add %0, %0, #0\n" + "add %0, %0, #0, lsl 12\n" + "ror %0, %0, #63\n", kvm_update_va_mask) : "+r" (v)); return v; |