This series add checks to make sure that the AArch32 state is supported before we process the 32bit ID registers. Also checks the same for COMPAT binary execution. (Painfully) applies on top of 4.5-rc5 + [1] + [2]. Or it is available here : git://linux-arm.org/linux-skp.git noaarch32/v2-4.5-rc5 [1] http://lists.infradead.org/pipermail/linux-arm-kernel/2016-February/410556.html [2] http://lists.infradead.org/pipermail/linux-arm-kernel/2016-January/401913.html Changes since V1: - Prevent changing the personality to PER_LINUX32 by adding wrapper for personality() syscall. - Add the check to KVM before initialising a AArch32 vcpu - Tested on hardware. Btw, linux32 doesn't complain when the personality() syscall fails to change to PER_LINUX32. You can verify the personality by running $ cat /proc/cpuinfo which would still list the 64bit features for the CPUs. Suzuki K Poulose (7): arm64: hwcaps: Cleanup naming arm64: HWCAP: Split COMPAT HWCAP table entries arm64: Add helpers for detecting AArch32 support at EL0 arm64: cpufeature: Check availability of AArch32 arm64: cpufeature: Track 32bit EL0 support arm64: Add a wrapper for personality() syscall arm64: kvm: Check support for AArch32 for 32bit guests Yury Norov (1): arm64: compat: Check for AArch32 state arch/arm/include/asm/kvm_host.h | 5 + arch/arm/kvm/arm.c | 3 + arch/arm64/include/asm/cpufeature.h | 15 ++- arch/arm64/include/asm/elf.h | 3 +- arch/arm64/include/asm/kvm_host.h | 8 ++ arch/arm64/include/asm/sysreg.h | 1 + arch/arm64/kernel/cpufeature.c | 184 +++++++++++++++++++++-------------- arch/arm64/kernel/cpuinfo.c | 37 +++---- arch/arm64/kernel/sys.c | 10 ++ 9 files changed, 173 insertions(+), 93 deletions(-) -- 1.7.9.5 _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
