On 09/29/2016 11:54 AM, Andy Lutomirski wrote:
>> So lets first see how a single priority intr works on ARC (maybe on other
>> arches
>> > as well).
>> >
>> > 1. task t1 enters kernel syscall (Trap Exception on ARC), handler drops
>> > down to
>> > pure kernel model and proceeds into syscall hand
On Thu, Sep 29, 2016 at 9:47 AM, Vineet Gupta
wrote:
> On 09/28/2016 11:43 PM, Peter Zijlstra wrote:
>> On Wed, Sep 28, 2016 at 06:20:29PM -0700, Vineet Gupta wrote:
>>> On 09/28/2016 03:26 PM, Andy Lutomirski wrote:
>
>>
>>
>> userirq nmi
>>
>> |
>> |
>> `-> .
On Sep 28, 2016 6:20 PM, "Vineet Gupta" wrote:
>
> On 09/28/2016 03:26 PM, Andy Lutomirski wrote:
> >> Right, so what I think Vineet is asking is if we need to disable NMIs as
> >> > well, we cannot on x86 disable NMIs so no.
> >> >
> > The same argument works here, too: an NMI won't set TIF_NEED_
On 09/28/2016 11:43 PM, Peter Zijlstra wrote:
> On Wed, Sep 28, 2016 at 06:20:29PM -0700, Vineet Gupta wrote:
>> On 09/28/2016 03:26 PM, Andy Lutomirski wrote:
>
>
> userirq nmi
>
> |
> |
> `-> .
> |
> |
> |
>
From: Vineet Gupta
3.12-stable review patch. If anyone has any objections, please let me know.
===
commit 05d9d0b96e53c52a113fd783c0c97c830c8dc7af upstream.
Al reported potential issue with ARC get_user() as it wasn't clearing
out destination pointer in case of fault due to bad ad
From: Vineet Gupta
This patch has been added to the 3.12 stable tree. If you have any
objections, please let us know.
===
commit 05d9d0b96e53c52a113fd783c0c97c830c8dc7af upstream.
Al reported potential issue with ARC get_user() as it wasn't clearing
out destination pointer in case
