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| author | Marc Zyngier <Marc.Zyngier@arm.com> | 2013-11-05 18:29:46 +0000 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2013-11-06 10:10:12 +0000 |
| commit | c5b2c0f5203b3bc678a8967daedf7114029975ae (patch) | |
| tree | f4dcca6fb18d3bfd81dbcf00e417599f8ed99c1b /arch/arm64 | |
| parent | 18ea3dbc9e5c8a53a361b17c4a5676ea6f4bcb72 (diff) | |
| download | linux-c5b2c0f5203b3bc678a8967daedf7114029975ae.tar.bz2 | |
arm64: KVM: vgic: byteswap GICv2 access on world switch if BE
Ensure that accesses to the GICH_* registers are byteswapped
when the kernel is compiled as big-endian.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/kvm/hyp.S | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm64/kvm/hyp.S b/arch/arm64/kvm/hyp.S index 1ac0bbbdddb2..3b47c36e10ff 100644 --- a/arch/arm64/kvm/hyp.S +++ b/arch/arm64/kvm/hyp.S @@ -403,6 +403,14 @@ __kvm_hyp_code_start: ldr w9, [x2, #GICH_ELRSR0] ldr w10, [x2, #GICH_ELRSR1] ldr w11, [x2, #GICH_APR] +CPU_BE( rev w4, w4 ) +CPU_BE( rev w5, w5 ) +CPU_BE( rev w6, w6 ) +CPU_BE( rev w7, w7 ) +CPU_BE( rev w8, w8 ) +CPU_BE( rev w9, w9 ) +CPU_BE( rev w10, w10 ) +CPU_BE( rev w11, w11 ) str w4, [x3, #VGIC_CPU_HCR] str w5, [x3, #VGIC_CPU_VMCR] @@ -421,6 +429,7 @@ __kvm_hyp_code_start: ldr w4, [x3, #VGIC_CPU_NR_LR] add x3, x3, #VGIC_CPU_LR 1: ldr w5, [x2], #4 +CPU_BE( rev w5, w5 ) str w5, [x3], #4 sub w4, w4, #1 cbnz w4, 1b @@ -446,6 +455,9 @@ __kvm_hyp_code_start: ldr w4, [x3, #VGIC_CPU_HCR] ldr w5, [x3, #VGIC_CPU_VMCR] ldr w6, [x3, #VGIC_CPU_APR] +CPU_BE( rev w4, w4 ) +CPU_BE( rev w5, w5 ) +CPU_BE( rev w6, w6 ) str w4, [x2, #GICH_HCR] str w5, [x2, #GICH_VMCR] @@ -456,6 +468,7 @@ __kvm_hyp_code_start: ldr w4, [x3, #VGIC_CPU_NR_LR] add x3, x3, #VGIC_CPU_LR 1: ldr w5, [x3], #4 +CPU_BE( rev w5, w5 ) str w5, [x2], #4 sub w4, w4, #1 cbnz w4, 1b |