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author | Paolo Bonzini <pbonzini@redhat.com> | 2014-08-05 09:47:45 +0200 |
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committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-08-05 09:47:45 +0200 |
commit | 5d5768660539b6d0da0d46113ffb0676540579a6 (patch) | |
tree | c0cd7a918fc7371c5f5b1b9b04c6358966850277 /arch/arm/include/asm/kvm_asm.h | |
parent | 5167d09ffad5b16b574d35ce3047ed34caf1e837 (diff) | |
parent | dedf97e8ff2c7513b1370e36b56e08b6bd0f0290 (diff) | |
download | op-kernel-dev-5d5768660539b6d0da0d46113ffb0676540579a6.zip op-kernel-dev-5d5768660539b6d0da0d46113ffb0676540579a6.tar.gz |
Merge tag 'kvm-arm-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm
KVM/ARM New features for 3.17 include:
- Fixes and code refactoring for stage2 kvm MMU unmap_range
- Support unmapping IPAs on deleting memslots for arm and arm64
- Support MMIO mappings in stage2 faults
- KVM VGIC v2 emulation on GICv3 hardware
- Big-Endian support for arm/arm64 (guest and host)
- Debug Architecture support for arm64 (arm32 is on Christoffer's todo list)
Conflicts:
virt/kvm/arm/vgic.c [last minute cherry-pick from 3.17 to 3.16]
Diffstat (limited to 'arch/arm/include/asm/kvm_asm.h')
-rw-r--r-- | arch/arm/include/asm/kvm_asm.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/arm/include/asm/kvm_asm.h b/arch/arm/include/asm/kvm_asm.h index 53b3c4a..3a67bec 100644 --- a/arch/arm/include/asm/kvm_asm.h +++ b/arch/arm/include/asm/kvm_asm.h @@ -61,6 +61,24 @@ #define ARM_EXCEPTION_FIQ 6 #define ARM_EXCEPTION_HVC 7 +/* + * The rr_lo_hi macro swaps a pair of registers depending on + * current endianness. It is used in conjunction with ldrd and strd + * instructions that load/store a 64-bit value from/to memory to/from + * a pair of registers which are used with the mrrc and mcrr instructions. + * If used with the ldrd/strd instructions, the a1 parameter is the first + * source/destination register and the a2 parameter is the second + * source/destination register. Note that the ldrd/strd instructions + * already swap the bytes within the words correctly according to the + * endianness setting, but the order of the registers need to be effectively + * swapped when used with the mrrc/mcrr instructions. + */ +#ifdef CONFIG_CPU_ENDIAN_BE8 +#define rr_lo_hi(a1, a2) a2, a1 +#else +#define rr_lo_hi(a1, a2) a1, a2 +#endif + #ifndef __ASSEMBLY__ struct kvm; struct kvm_vcpu; |