On 03/05/2020 11:13 AM, Christophe Leroy wrote:
>
>
> Le 05/03/2020 à 01:54, Anshuman Khandual a écrit :
>>
>>
>> On 03/04/2020 04:59 PM, Qian Cai wrote:
>>>
>>>
On Mar 4, 2020, at 1:49 AM, Christophe Leroy
wrote:
AFAIU, you are not taking an interrupt here. You are stuck
Le 05/03/2020 à 01:54, Anshuman Khandual a écrit :
On 03/04/2020 04:59 PM, Qian Cai wrote:
On Mar 4, 2020, at 1:49 AM, Christophe Leroy wrote:
AFAIU, you are not taking an interrupt here. You are stuck in the pte_update(),
most likely due to nested locks. Try with LOCKDEP ?
Not exact
On 03/04/2020 04:59 PM, Qian Cai wrote:
>
>
>> On Mar 4, 2020, at 1:49 AM, Christophe Leroy wrote:
>>
>> AFAIU, you are not taking an interrupt here. You are stuck in the
>> pte_update(), most likely due to nested locks. Try with LOCKDEP ?
>
> Not exactly sure what did you mean here, but th
> On Mar 4, 2020, at 1:49 AM, Christophe Leroy wrote:
>
> AFAIU, you are not taking an interrupt here. You are stuck in the
> pte_update(), most likely due to nested locks. Try with LOCKDEP ?
Not exactly sure what did you mean here, but the kernel has all lockdep enabled
and did not flag an
Le 04/03/2020 à 02:39, Qian Cai a écrit :
Below is slightly modified version of your change above and should still
prevent the bug on powerpc. Will it be possible for you to re-test this
? Once confirmed, will send a patch enabling this test on powerpc64
keeping your authorship. Thank you.
> Below is slightly modified version of your change above and should still
> prevent the bug on powerpc. Will it be possible for you to re-test this
> ? Once confirmed, will send a patch enabling this test on powerpc64
> keeping your authorship. Thank you.
This works fine on radix MMU but I decid
Le 02/03/2020 à 20:40, Qian Cai a écrit :
On Wed, 2020-02-26 at 10:51 -0500, Qian Cai wrote:
On Wed, 2020-02-26 at 15:45 +0100, Christophe Leroy wrote:
Le 26/02/2020 à 15:09, Qian Cai a écrit :
On Mon, 2020-02-17 at 08:47 +0530, Anshuman Khandual wrote:
This adds tests which will validate
On 03/03/2020 01:10 AM, Qian Cai wrote:
> On Wed, 2020-02-26 at 10:51 -0500, Qian Cai wrote:
>> On Wed, 2020-02-26 at 15:45 +0100, Christophe Leroy wrote:
>>>
>>> Le 26/02/2020 à 15:09, Qian Cai a écrit :
On Mon, 2020-02-17 at 08:47 +0530, Anshuman Khandual wrote:
> This adds tests which
On Wed, 2020-02-26 at 10:51 -0500, Qian Cai wrote:
> On Wed, 2020-02-26 at 15:45 +0100, Christophe Leroy wrote:
> >
> > Le 26/02/2020 à 15:09, Qian Cai a écrit :
> > > On Mon, 2020-02-17 at 08:47 +0530, Anshuman Khandual wrote:
> > > > This adds tests which will validate architecture page table he
On 02/27/2020 09:33 AM, Andrew Morton wrote:
> On Thu, 27 Feb 2020 08:04:05 +0530 Anshuman Khandual
> wrote:
>
>>> Must be something wrong with the following in debug_vm_pgtable()
>>>
>>> paddr = __pa(&start_kernel);
>>>
>>> Is there any explaination why start_kernel() is not in linear mem
On Thu, 27 Feb 2020 08:04:05 +0530 Anshuman Khandual
wrote:
> > Must be something wrong with the following in debug_vm_pgtable()
> >
> > paddr = __pa(&start_kernel);
> >
> > Is there any explaination why start_kernel() is not in linear memory on
> > ARM64 ?
>
>
> Cc: + James Morse
>
>
On 02/26/2020 08:14 PM, Christophe Leroy wrote:
>
>
> Le 26/02/2020 à 15:12, Qian Cai a écrit :
>> On Wed, 2020-02-26 at 09:09 -0500, Qian Cai wrote:
>>> On Mon, 2020-02-17 at 08:47 +0530, Anshuman Khandual wrote:
>>>
>>> How useful is this that straightly crash the powerpc?
>>
>> And then genera
On Wed, 2020-02-26 at 15:45 +0100, Christophe Leroy wrote:
>
> Le 26/02/2020 à 15:09, Qian Cai a écrit :
> > On Mon, 2020-02-17 at 08:47 +0530, Anshuman Khandual wrote:
> > > This adds tests which will validate architecture page table helpers and
> > > other accessors in their compliance with expe
Le 26/02/2020 à 15:09, Qian Cai a écrit :
On Mon, 2020-02-17 at 08:47 +0530, Anshuman Khandual wrote:
This adds tests which will validate architecture page table helpers and
other accessors in their compliance with expected generic MM semantics.
This will help various architectures in validati
Le 26/02/2020 à 15:12, Qian Cai a écrit :
On Wed, 2020-02-26 at 09:09 -0500, Qian Cai wrote:
On Mon, 2020-02-17 at 08:47 +0530, Anshuman Khandual wrote:
How useful is this that straightly crash the powerpc?
And then generate warnings on arm64,
[ 146.634626][T1] debug_vm_pgtable: debug
On Wed, 2020-02-26 at 09:09 -0500, Qian Cai wrote:
> On Mon, 2020-02-17 at 08:47 +0530, Anshuman Khandual wrote:
> > This adds tests which will validate architecture page table helpers and
> > other accessors in their compliance with expected generic MM semantics.
> > This will help various archite
On Mon, 2020-02-17 at 08:47 +0530, Anshuman Khandual wrote:
> This adds tests which will validate architecture page table helpers and
> other accessors in their compliance with expected generic MM semantics.
> This will help various architectures in validating changes to existing
> page table helpe
On 02/17/2020 08:47 AM, Anshuman Khandual wrote:
> This adds a test validation for architecture exported page table helpers.
> Patch adds basic transformation tests at various levels of the page table.
>
> This test was originally suggested by Catalin during arm64 THP migration
> RFC discussion ea
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