Re: [PATCH 00/11] APEI in_nmi() rework and arm64 SDEI wire-up
James Morse writes: > Hello! Hi > > The aim of this series is to wire arm64's SDEI into APEI. > [...] > > Trees... The changes outside APEI are tiny, but there will be some changes > to how arch/arm64/mm/fault.c generates signals, affecting do_sea() that will > cause conflicts with patch 5. All but the last patch applied cleanly on v4.16-rc2 for me. Other than the comments I've already sent the patches look good to me. FWIW, Reviewed-by: Punit Agrawal Thanks, Punit > > > Thanks, > > James > > [0] > http://infocenter.arm.com/help/topic/com.arm.doc.den0054a/ARM_DEN0054A_Software_Delegated_Exception_Interface.pdf > > James Morse (11): > ACPI / APEI: Move the estatus queue code up, and under its own ifdef > ACPI / APEI: Generalise the estatus queue's add/remove and notify code > ACPI / APEI: Switch NOTIFY_SEA to use the estatus queue > KVM: arm/arm64: Add kvm_ras.h to collect kvm specific RAS plumbing > arm64: KVM/mm: Move SEA handling behind a single 'claim' interface > ACPI / APEI: Make the fixmap_idx per-ghes to allow multiple in_nmi() > users > ACPI / APEI: Split fixmap pages for arm64 NMI-like notifications > firmware: arm_sdei: Add ACPI GHES registration helper > ACPI / APEI: Add support for the SDEI GHES Notification type > mm/memory-failure: increase queued recovery work's priority > arm64: acpi: Make apei_claim_sea() synchronise with APEI's irq work > > arch/arm/include/asm/kvm_ras.h | 14 + > arch/arm/include/asm/system_misc.h | 5 - > arch/arm64/include/asm/acpi.h| 3 + > arch/arm64/include/asm/daifflags.h | 1 + > arch/arm64/include/asm/fixmap.h | 8 +- > arch/arm64/include/asm/kvm_ras.h | 29 ++ > arch/arm64/include/asm/system_misc.h | 2 - > arch/arm64/kernel/acpi.c | 49 > arch/arm64/mm/fault.c| 30 +- > drivers/acpi/apei/ghes.c | 533 > --- > drivers/firmware/arm_sdei.c | 75 + > include/acpi/ghes.h | 5 + > include/linux/arm_sdei.h | 8 + > mm/memory-failure.c | 11 +- > virt/kvm/arm/mmu.c | 4 +- > 15 files changed, 517 insertions(+), 260 deletions(-) > create mode 100644 arch/arm/include/asm/kvm_ras.h > create mode 100644 arch/arm64/include/asm/kvm_ras.h ___ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
Re: [PATCH 00/11] APEI in_nmi() rework and arm64 SDEI wire-up
On Thu, Feb 15, 2018 at 06:55:55PM +, James Morse wrote: > Hello! > > The aim of this series is to wire arm64's SDEI into APEI. > > What's SDEI? Its ARM's "Software Delegated Exception Interface" [0]. It's > used by firmware to tell the OS about firmware-first RAS events. > > These Software exceptions can interrupt anything, so I describe them as > NMI-like. They aren't the only NMI-like way to notify the OS about > firmware-first RAS events, the ACPI spec also defines 'NOTFIY_SEA' and > 'NOTIFY_SEI'. > > (Acronyms: SEA, Synchronous External Abort. The CPU requested some memory, > but the owner of that memory said no. These are always synchronous with the > instruction that caused them. SEI, System-Error Interrupt, commonly called > SError. This is an asynchronous external abort, the memory-owner didn't say no > at the right point. Collectively these things are called external-aborts > How is firmware involved? It traps these and re-injects them into the kernel > once its written the CPER records). Thank you about those! This is how people should write 0/N introductory messages with fancy new abbreviations. :-) -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply. ___ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
