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| author |   Marc Zyngier <maz@kernel.org> | 2020-12-09 10:00:24 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2020-12-09 10:00:24 +0000 |
| commit | 3a514592b698588326924625b6948a10c35fadd5 (patch) | |
| tree | 1209f5cb0a780f87c41e3299b22776a221766892 /arch/arm64/include/asm/kvm_mmu.h | |
| parent | Merge remote-tracking branch 'origin/kvm-arm64/misc-5.11' into kvmarm-master/queue (diff) | |
| parent | KVM: arm64: Fix nVHE boot on VHE systems (diff) | |
| download | linux-dev-3a514592b698588326924625b6948a10c35fadd5.tar.xz linux-dev-3a514592b698588326924625b6948a10c35fadd5.zip | |
Merge remote-tracking branch 'origin/kvm-arm64/psci-relay' into kvmarm-master/next
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'arch/arm64/include/asm/kvm_mmu.h')
| -rw-r--r-- | arch/arm64/include/asm/kvm_mmu.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h index e298191a854d..e52d82aeadca 100644 --- a/arch/arm64/include/asm/kvm_mmu.h +++ b/arch/arm64/include/asm/kvm_mmu.h @@ -94,6 +94,30 @@ alternative_cb_end sub \reg, \reg, \tmp .endm +/* + * Convert a kernel image address to a hyp VA + * reg: kernel address to be converted in place + * tmp: temporary register + * + * The actual code generation takes place in kvm_get_kimage_voffset, and + * the instructions below are only there to reserve the space and + * perform the register allocation (kvm_update_kimg_phys_offset uses the + * specific registers encoded in the instructions). + */ +.macro kimg_hyp_va reg, tmp +alternative_cb kvm_update_kimg_phys_offset + movz \tmp, #0 + movk \tmp, #0, lsl #16 + movk \tmp, #0, lsl #32 + movk \tmp, #0, lsl #48 +alternative_cb_end + + sub \reg, \reg, \tmp + mov_q \tmp, PAGE_OFFSET + orr \reg, \reg, \tmp + kern_hyp_va \reg +.endm + #else #include <linux/pgtable.h> |