[PATCH V12 05/10] acpi: apei: handle SEA notification type for ARMv8
tbaicar at codeaurora.org
Tue Mar 21 12:19:12 PDT 2017
On 3/17/2017 10:43 AM, James Morse wrote:
> On 06/03/17 20:44, Tyler Baicar wrote:
>> ARM APEI extension proposal added SEA (Synchronous External Abort)
>> notification type for ARMv8.
>> Add a new GHES error source handling function for SEA. If an error
>> source's notification type is SEA, then this function can be registered
>> into the SEA exception handler. That way GHES will parse and report
>> SEA exceptions when they occur.
>> An SEA can interrupt code that had interrupts masked and is treated as
>> an NMI. To aid this the page of address space for mapping APEI buffers
>> while in_nmi() is always reserved, and ghes_ioremap_pfn_nmi() is
>> changed to use the helper methods to find the prot_t to map with in
>> the same way as ghes_ioremap_pfn_irq().
>> diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
>> index b25e7cf..b0596ba 100644
>> --- a/drivers/acpi/apei/ghes.c
>> +++ b/drivers/acpi/apei/ghes.c
>> @@ -1023,6 +1075,13 @@ static int ghes_probe(struct platform_device *ghes_dev)
>> pr_warning(GHES_PFX "Generic hardware error source: %d notified via local interrupt is not supported!\n",
>> goto err;
>> + case ACPI_HEST_NOTIFY_GPIO:
>> + case ACPI_HEST_NOTIFY_SEI:
>> + case ACPI_HEST_NOTIFY_GSIV:
>> + pr_warn(GHES_PFX "Generic hardware error source: %d notified via notification type %u is not supported\n",
>> + generic->header.source_id, generic->header.source_id);
>> + rc = -ENOTSUPP;
>> + goto err;
>> pr_warning(FW_WARN GHES_PFX "Unknown notification type: %u for generic hardware error source: %d\n",
>> generic->notify.type, generic->header.source_id);
> This hunk will conflict with Shiju Jose's patch that adds GPIO and GSIV
> support. Can we remove it?
Yes, I was planning on removing this when I saw Shiju's patch. It will
be removed in my v13.
>  https://www.spinics.net/lists/linux-acpi/msg72654.html
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