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Groups > linux.kernel > #1500258
| From | Suzuki K Poulose <Suzuki.Poulose@arm.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH V3 06/10] acpi: apei: panic OS with fatal error status block |
| Date | 2016-10-13 15:10 +0200 |
| Message-ID | <srNVM-3VP-3@gated-at.bofh.it> (permalink) |
| References | <spL21-6h3-1@gated-at.bofh.it> <spL22-6h3-33@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 07/10/16 22:31, Tyler Baicar wrote:
> From: "Jonathan (Zhixiong) Zhang" <zjzhang@codeaurora.org>
>
> Even if an error status block's severity is fatal, the kernel does not
> honor the severity level and panic.
>
> With the firmware first model, the platform could inform the OS about a
> fatal hardware error through the non-NMI GHES notification type. The OS
> should panic when a hardware error record is received with this
> severity.
>
> Call panic() after CPER data in error status block is printed if
> severity is fatal, before each error section is handled.
>
> Signed-off-by: Jonathan (Zhixiong) Zhang <zjzhang@codeaurora.org>
> ---
> drivers/acpi/apei/ghes.c | 10 ++++++++--
> 1 file changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
> index 28d5a09..36894c8 100644
> --- a/drivers/acpi/apei/ghes.c
> +++ b/drivers/acpi/apei/ghes.c
> @@ -141,6 +141,8 @@ static unsigned long ghes_estatus_pool_size_request;
> static struct ghes_estatus_cache *ghes_estatus_caches[GHES_ESTATUS_CACHES_SIZE];
> static atomic_t ghes_estatus_cache_alloced;
>
> +static int ghes_panic_timeout __read_mostly = 30;
> +
> static int ghes_ioremap_init(void)
> {
> ghes_ioremap_area = __get_vm_area(PAGE_SIZE * GHES_IOREMAP_PAGES,
> @@ -715,6 +717,12 @@ static int ghes_proc(struct ghes *ghes)
> if (ghes_print_estatus(NULL, ghes->generic, ghes->estatus))
> ghes_estatus_cache_add(ghes->generic, ghes->estatus);
> }
> + if (ghes_severity(ghes->estatus->error_severity) >= GHES_SEV_PANIC) {
> + if (panic_timeout == 0)
> + panic_timeout = ghes_panic_timeout;
> + panic("Fatal hardware error!");
I think there is a chance that we might miss the o/p of ghes_print_estatus() as we use
no pfx, and it could default to the normal loglevel and would never get printed
if panic() is encountered before it. On the other hand, there is already a
__ghes_panic() which does similar stuff. Is there a way we could reuse
(may be even parts of) it ? Or at least use KERN_EMERG for the ghes_print_estatus(),
if the severity could result in panic() ?
Cheers
Suzuki
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[PATCH V3 00/10] Add UEFI 2.6 and ACPI 6.1 updates for RAS on ARM64 Tyler Baicar <tbaicar@codeaurora.org> - 2016-10-07 23:40 +0200
[PATCH V3 07/10] efi: print unrecognized CPER section Tyler Baicar <tbaicar@codeaurora.org> - 2016-10-07 23:40 +0200
[PATCH V3 08/10] ras: acpi / apei: generate trace event for unrecognized CPER section Tyler Baicar <tbaicar@codeaurora.org> - 2016-10-07 23:40 +0200
Re: [PATCH V3 08/10] ras: acpi / apei: generate trace event for unrecognized CPER section Punit Agrawal <punit.agrawal@arm.com> - 2016-10-13 13:00 +0200
Re: [PATCH V3 08/10] ras: acpi / apei: generate trace event for unrecognized CPER section "Baicar, Tyler" <tbaicar@codeaurora.org> - 2016-10-13 22:20 +0200
[PATCH V3 10/10] arm64: KVM: add guest SEA support Tyler Baicar <tbaicar@codeaurora.org> - 2016-10-07 23:40 +0200
Re: [PATCH V3 10/10] arm64: KVM: add guest SEA support Punit Agrawal <punit.agrawal@arm.com> - 2016-10-13 15:20 +0200
Re: [PATCH V3 10/10] arm64: KVM: add guest SEA support "Baicar, Tyler" <tbaicar@codeaurora.org> - 2016-10-13 22:20 +0200
Re: [PATCH V3 10/10] arm64: KVM: add guest SEA support Punit Agrawal <punit.agrawal@arm.com> - 2016-10-14 11:50 +0200
Re: [PATCH V3 10/10] arm64: KVM: add guest SEA support "Baicar, Tyler" <tbaicar@codeaurora.org> - 2016-10-15 00:00 +0200
[PATCH V3 03/10] efi: parse ARMv8 processor error Tyler Baicar <tbaicar@codeaurora.org> - 2016-10-07 23:40 +0200
[PATCH V3 01/10] acpi: apei: read ack upon ghes record consumption Tyler Baicar <tbaicar@codeaurora.org> - 2016-10-07 23:40 +0200
Re: [PATCH V3 01/10] acpi: apei: read ack upon ghes record consumption Punit Agrawal <punit.agrawal@arm.com> - 2016-10-12 20:20 +0200
Re: [PATCH V3 01/10] acpi: apei: read ack upon ghes record consumption "Baicar, Tyler" <tbaicar@codeaurora.org> - 2016-10-13 16:00 +0200
[PATCH V3 05/10] acpi: apei: handle SEA notification type for ARMv8 Tyler Baicar <tbaicar@codeaurora.org> - 2016-10-07 23:40 +0200
Re: [PATCH V3 05/10] acpi: apei: handle SEA notification type for ARMv8 Punit Agrawal <punit.agrawal@arm.com> - 2016-10-12 20:10 +0200
Re: [PATCH V3 05/10] acpi: apei: handle SEA notification type for ARMv8 "Baicar, Tyler" <tbaicar@codeaurora.org> - 2016-10-13 16:10 +0200
Re: [PATCH V3 05/10] acpi: apei: handle SEA notification type for ARMv8 Punit Agrawal <punit.agrawal@arm.com> - 2016-10-14 11:50 +0200
Re: [PATCH V3 05/10] acpi: apei: handle SEA notification type for ARMv8 Hanjun Guo <hanjun.guo@linaro.org> - 2016-10-18 14:50 +0200
Re: [PATCH V3 05/10] acpi: apei: handle SEA notification type for ARMv8 "Abdulhamid, Harb" <harba@codeaurora.org> - 2016-10-19 19:00 +0200
Re: [PATCH V3 05/10] acpi: apei: handle SEA notification type for ARMv8 Hanjun Guo <guohanjun@huawei.com> - 2016-10-23 11:20 +0200
Re: [PATCH V3 05/10] acpi: apei: handle SEA notification type for ARMv8 Hanjun Guo <hanjun.guo@linaro.org> - 2016-10-18 15:10 +0200
Re: [PATCH V3 05/10] acpi: apei: handle SEA notification type for ARMv8 "Abdulhamid, Harb" <harba@codeaurora.org> - 2016-10-19 19:20 +0200
[PATCH V3 04/10] arm64: exception: handle Synchronous External Abort Tyler Baicar <tbaicar@codeaurora.org> - 2016-10-07 23:40 +0200
Re: [PATCH V3 04/10] arm64: exception: handle Synchronous External Abort Punit Agrawal <punit.agrawal@arm.com> - 2016-10-12 19:50 +0200
Re: [PATCH V3 04/10] arm64: exception: handle Synchronous External Abort "Baicar, Tyler" <tbaicar@codeaurora.org> - 2016-10-13 16:00 +0200
[PATCH V3 09/10] trace, ras: add ARM processor error trace event Tyler Baicar <tbaicar@codeaurora.org> - 2016-10-07 23:40 +0200
Re: [PATCH V3 09/10] trace, ras: add ARM processor error trace event Steven Rostedt <rostedt@goodmis.org> - 2016-10-07 23:50 +0200
Re: [PATCH V3 09/10] trace, ras: add ARM processor error trace event "Baicar, Tyler" <tbaicar@codeaurora.org> - 2016-10-12 23:30 +0200
[PATCH V3 02/10] ras: acpi/apei: cper: generic error data entry v3 per ACPI 6.1 Tyler Baicar <tbaicar@codeaurora.org> - 2016-10-07 23:40 +0200
Re: [PATCH V3 02/10] ras: acpi/apei: cper: generic error data entry v3 per ACPI 6.1 Suzuki K Poulose <Suzuki.Poulose@arm.com> - 2016-10-11 19:40 +0200
Re: [PATCH V3 02/10] ras: acpi/apei: cper: generic error data entry v3 per ACPI 6.1 "Baicar, Tyler" <tbaicar@codeaurora.org> - 2016-10-13 00:30 +0200
Re: [PATCH V3 02/10] ras: acpi/apei: cper: generic error data entry v3 per ACPI 6.1 Suzuki K Poulose <Suzuki.Poulose@arm.com> - 2016-10-13 11:00 +0200
Re: [PATCH V3 02/10] ras: acpi/apei: cper: generic error data entry v3 per ACPI 6.1 "Baicar, Tyler" <tbaicar@codeaurora.org> - 2016-10-13 21:50 +0200
Re: [PATCH V3 02/10] ras: acpi/apei: cper: generic error data entry v3 per ACPI 6.1 Suzuki K Poulose <Suzuki.Poulose@arm.com> - 2016-10-14 18:30 +0200
Re: [PATCH V3 02/10] ras: acpi/apei: cper: generic error data entry v3 per ACPI 6.1 Mark Rutland <mark.rutland@arm.com> - 2016-10-14 18:50 +0200
Re: [PATCH V3 02/10] ras: acpi/apei: cper: generic error data entry v3 per ACPI 6.1 Russell King - ARM Linux <linux@armlinux.org.uk> - 2016-10-11 21:10 +0200
Re: [PATCH V3 02/10] ras: acpi/apei: cper: generic error data entry v3 per ACPI 6.1 "Baicar, Tyler" <tbaicar@codeaurora.org> - 2016-10-13 00:20 +0200
[PATCH V3 06/10] acpi: apei: panic OS with fatal error status block Tyler Baicar <tbaicar@codeaurora.org> - 2016-10-07 23:40 +0200
Re: [PATCH V3 06/10] acpi: apei: panic OS with fatal error status block Suzuki K Poulose <Suzuki.Poulose@arm.com> - 2016-10-13 15:10 +0200
Re: [PATCH V3 06/10] acpi: apei: panic OS with fatal error status block "Baicar, Tyler" <tbaicar@codeaurora.org> - 2016-10-14 01:50 +0200
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