Hi Christoffer, Marc,
Could you please look at updated ARM BE KVM series. We worked separately on specific patches, I believe now they should look OK.
Changes since previous V3 version of series [1]:
o Updated Review-by Acked-by tags where appropriate
o 'ARM: KVM: __kvm_vcpu_run function return result fix in BE case' patch changed __ARMEB__ to CONFIG_CPU_ENDIAN_BE8 as Marc suggested
o 'ARM: KVM: one_reg coproc set and get BE fixes' patch was siginificantly reworked based on separate thread discussion with Christoffer - In short summry now we fix only oddball places where reg_[from|to]_user function is used in case target variable mismatching register size
o 'ARM64: KVM: fix vgic_bitmap_get_reg function for BE 64bit case' incorporated Christoffer's review comments about code comments (spelling, grammar, etc)
o 'ARM64: KVM: set and get of sys registers in BE case' changed patch siginificantly based on separate email thread feedback from Christoffer and Marc - now patch just removes comment about reg_[to|form]_user being little endian, since it handles only 64 bit register size current code is endian agnostic.
o 'ARM64: KVM: fix big endian issue in access_vm_reg for 32bit guest' incorporoated Christoffer's review comments - two macros vcpu_cp15_64_high and vcpu_cp15_64_low now introduced which defined differently between BE and LE cases
Series were tested on top of v3.15. On V7 4 combinations, BE/LE host x BE/LE guest, were tested with TC2. On V8 8 combinations, BE/LE host x BE/LE guest x 32/64 bit guest, were tested on Fast models.
Thanks, Victor
[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2014-May/255849.html
Victor Kamensky (14): ARM: KVM: switch hypervisor into BE mode in case of BE host ARM: KVM: fix vgic V7 assembler code to work in BE image ARM: KVM: handle 64bit values passed to mrcc or from mcrr instructions in BE case ARM: KVM: __kvm_vcpu_run function return result fix in BE case ARM: KVM: vgic mmio should hold data as LE bytes array in BE case ARM: KVM: MMIO support BE host running LE code ARM: KVM: one_reg coproc set and get BE fixes ARM: KVM: enable KVM in Kconfig on big-endian systems ARM64: KVM: MMIO support BE host running LE code ARM64: KVM: store kvm_vcpu_fault_info est_el2 as word ARM64: KVM: fix vgic_bitmap_get_reg function for BE 64bit case ARM64: KVM: vgic_elrsr and vgic_eisr need to be byteswapped in BE case ARM64: KVM: set and get of sys registers in BE case ARM64: KVM: fix big endian issue in access_vm_reg for 32bit guest
arch/arm/include/asm/kvm_asm.h | 18 ++++++++ arch/arm/include/asm/kvm_emulate.h | 22 ++++++++-- arch/arm/kvm/Kconfig | 2 +- arch/arm/kvm/coproc.c | 84 ++++++++++++++++++++++++++++++++---- arch/arm/kvm/init.S | 7 ++- arch/arm/kvm/interrupts.S | 9 +++- arch/arm/kvm/interrupts_head.S | 20 +++++++-- arch/arm64/include/asm/kvm_emulate.h | 22 ++++++++++ arch/arm64/include/asm/kvm_host.h | 8 ++++ arch/arm64/kvm/hyp.S | 9 +++- arch/arm64/kvm/sys_regs.c | 10 ++--- virt/kvm/arm/vgic.c | 28 ++++++++++-- 12 files changed, 207 insertions(+), 32 deletions(-)