lkml.org 
[lkml]   [2017]   [Mar]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH V12 05/10] acpi: apei: handle SEA notification type for ARMv8
From
Date
Hello James,


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",
>> generic->header.source_id);
>> 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;
>> default:
>> 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[0] 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.

Thanks,
Tyler
>
> [0] https://www.spinics.net/lists/linux-acpi/msg72654.html

--
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project.

\
 
 \ /
  Last update: 2017-03-21 20:23    [W:0.507 / U:0.024 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site