Jonathan, Thanks for the review, will correct the typo issue in the next patch version. On 2017/8/22 15:54, Jonathan Cameron wrote: > On Fri, 18 Aug 2017 22:11:50 +0800 > Dongjiu Geng <gengdongjiu@xxxxxxxxxx> wrote: > >> In the firmware-first RAS solution, corrupt data is detected in a >> memory location when guest OS application software executing at EL0 >> or guest OS kernel El1 software are reading from the memory. The >> memory node records errors in an error record accessible using >> system registers. >> >> Because SCR_EL3.EA is 1, then CPU will trap to El3 firmware, EL3 >> firmware records the error to APEI table through reading system >> register. >> >> Because the error was taken from a lower Exception leve, if the > > leve -> level > >> exception is SEA/SEI and HCR_EL2.TEA/HCR_EL2.AMO is 1, firmware >> sets ESR_EL2/FAR_El to fake a exception trap to EL2, then >> transfers to hypervisor. >> >> Hypervisor calls the momory failure to deal with this error, momory > > momory -> memory > > memory failure -> memory failure function? Or callback perhaps? > >> failure read the APEI table and decide whether it needs to deliver >> SIGBUS signal to user space, the advantage of using SIGBUS signal >> to notify user space is that it can be compatible Non-Kvm users. > > Seems like a good description to me. Thanks. > > Jonathan > >> >> Dongjiu Geng (5): >> acpi: apei: Add SEI notification type support for ARMv8 >> support user space to query RAS extension feature >> arm64: kvm: route synchronous external abort exceptions to el2 >> KVM: arm/arm64: Allow get exception syndrome and >> arm64: kvm: handle SEI notification and inject virtual SError >> >> James Morse (1): >> KVM: arm64: Save ESR_EL2 on guest SError >> >> Xie XiuQi (1): >> arm64: cpufeature: Detect CPU RAS Extentions >> >> arch/arm/include/asm/kvm_host.h | 2 ++ >> arch/arm/kvm/guest.c | 5 +++ >> arch/arm64/Kconfig | 16 ++++++++++ >> arch/arm64/include/asm/barrier.h | 1 + >> arch/arm64/include/asm/cpucaps.h | 3 +- >> arch/arm64/include/asm/kvm_arm.h | 2 ++ >> arch/arm64/include/asm/kvm_emulate.h | 17 ++++++++++ >> arch/arm64/include/asm/kvm_host.h | 2 ++ >> arch/arm64/include/asm/sysreg.h | 5 +++ >> arch/arm64/include/asm/system_misc.h | 1 + >> arch/arm64/include/uapi/asm/kvm.h | 5 +++ >> arch/arm64/kernel/cpufeature.c | 13 ++++++++ >> arch/arm64/kernel/process.c | 3 ++ >> arch/arm64/kvm/guest.c | 48 +++++++++++++++++++++++++++++ >> arch/arm64/kvm/handle_exit.c | 21 +++++++++++-- >> arch/arm64/kvm/hyp/switch.c | 29 +++++++++++++++-- >> arch/arm64/kvm/reset.c | 3 ++ >> arch/arm64/mm/fault.c | 21 +++++++++++-- >> drivers/acpi/apei/Kconfig | 15 +++++++++ >> drivers/acpi/apei/ghes.c | 60 +++++++++++++++++++++++------------- >> include/acpi/ghes.h | 2 +- >> include/uapi/linux/kvm.h | 3 ++ >> virt/kvm/arm/arm.c | 7 +++++ >> 23 files changed, 254 insertions(+), 30 deletions(-) >> > > > . >
