From: Anshuman Khandual <anshuman.khandual@arm.com>
To: Alexander Gordeev <agordeev@linux.ibm.com>,
Gerald Schaefer <gerald.schaefer@de.ibm.com>
Cc: linux-mm@kvack.org, christophe.leroy@c-s.fr, ziy@nvidia.com,
Jonathan Corbet <corbet@lwn.net>,
Andrew Morton <akpm@linux-foundation.org>,
Mike Rapoport <rppt@linux.ibm.com>,
Vineet Gupta <vgupta@synopsys.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H. Peter Anvin" <hpa@zytor.com>,
"Kirill A . Shutemov" <kirill@shutemov.name>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
linux-snps-arc@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org,
linux-riscv@lists.infradead.org, x86@kernel.org,
linux-doc@vger.kernel.org, linux-arch@vger.kernel.org,
linux-kernel@vger.kernel.org,
Christophe Leroy <christophe.leroy@csgroup.eu>
Subject: Re: [PATCH V3 0/4] mm/debug_vm_pgtable: Add some more tests
Date: Mon, 29 Jun 2020 14:02:31 +0530 [thread overview]
Message-ID: <c4a8b4fe-b9f4-b2ec-12ea-7143e4ca0464@arm.com> (raw)
Message-ID: <20200629083231.G-_O-DZhpyY-YqxiPcGAAIP9JQ6mYk7greuyqqIpLCc@z> (raw)
In-Reply-To: <20200624144015.GD24934@oc3871087118.ibm.com>
On 06/24/2020 08:10 PM, Alexander Gordeev wrote:
> On Wed, Jun 24, 2020 at 01:48:08PM +0200, Gerald Schaefer wrote:
>> On Wed, 24 Jun 2020 13:05:39 +0200
>> Alexander Gordeev <agordeev@linux.ibm.com> wrote:
>>
>>> On Wed, Jun 24, 2020 at 08:43:10AM +0530, Anshuman Khandual wrote:
>>>
>>> [...]
>>>
>>>> Hello Gerald/Christophe/Vineet,
>>>>
>>>> It would be really great if you could give this series a quick test
>>>> on s390/ppc/arc platforms respectively. Thank you.
>>>
>>> That worked for me with the default and debug s390 configurations.
>>> Would you like to try with some particular options or combinations
>>> of the options?
>>
>> It will be enabled automatically on all archs that set
>> ARCH_HAS_DEBUG_VM_PGTABLE, which we do for s390 unconditionally.
>> Also, DEBUG_VM has to be set, which we have only in the debug config.
>> So only the s390 debug config will have it enabled, you can check
>> dmesg for "debug_vm_pgtable" to see when / where it was run, and if it
>> triggered any warnings.
>
> Yes, that is what I did ;)
>
> I should have been more clear. I wonder whether Anshuman has in
> mind other options which possibly makes sense to set or unset
> and check how it goes with non-standard configurations.
After enabling CONFIG_DEBUG_VM either explicitly or via DEBUG_VM, ideally
any memory config combination on s390 which can change platform page table
helpers (validated with CONFIG_DEBUG_VM) should also get tested. Recently,
there was a kernel crash on ppc64 [1] and a build failure on ppc32 [2] for
some particular configs. Hence it will be great if you could run this test
on multiple s390 configurations.
[1] 787d563b8642f35c5 ("mm/debug_vm_pgtable: fix kernel crash by checking for THP support")
[2] 9449c9cb420b249eb ("mm/debug_vm_pgtable: fix build failure with powerpc 8xx")
- Anshuman
next prev parent reply other threads:[~2020-06-29 8:32 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-15 3:37 [PATCH V3 0/4] mm/debug_vm_pgtable: Add some more tests Anshuman Khandual
2020-06-15 3:37 ` Anshuman Khandual
2020-06-15 3:37 ` [PATCH V3 1/4] mm/debug_vm_pgtable: Add tests validating arch helpers for core MM features Anshuman Khandual
2020-06-15 3:37 ` Anshuman Khandual
2020-06-15 3:37 ` [PATCH V3 2/4] mm/debug_vm_pgtable: Add tests validating advanced arch page table helpers Anshuman Khandual
2020-06-15 3:37 ` Anshuman Khandual
2020-06-27 7:18 ` Christophe Leroy
2020-06-27 7:18 ` Christophe Leroy
2020-06-29 8:09 ` Anshuman Khandual
2020-06-29 8:09 ` Anshuman Khandual
2020-06-27 7:26 ` Christophe Leroy
2020-06-27 7:26 ` Christophe Leroy
2020-06-29 8:15 ` Anshuman Khandual
2020-06-29 8:15 ` Anshuman Khandual
2020-06-15 3:37 ` [PATCH V3 3/4] mm/debug_vm_pgtable: Add debug prints for individual tests Anshuman Khandual
2020-06-15 3:37 ` Anshuman Khandual
2020-06-15 3:37 ` [PATCH V3 4/4] Documentation/mm: Add descriptions for arch page table helpers Anshuman Khandual
2020-06-15 3:37 ` Anshuman Khandual
2020-06-17 10:01 ` Mike Rapoport
2020-06-17 10:01 ` Mike Rapoport
2020-06-24 3:13 ` [PATCH V3 0/4] mm/debug_vm_pgtable: Add some more tests Anshuman Khandual
2020-06-24 3:13 ` Anshuman Khandual
2020-06-24 11:05 ` Alexander Gordeev
2020-06-24 11:05 ` Alexander Gordeev
2020-06-24 11:48 ` Gerald Schaefer
2020-06-24 11:48 ` Gerald Schaefer
2020-06-24 14:40 ` Alexander Gordeev
2020-06-24 14:40 ` Alexander Gordeev
2020-06-29 8:32 ` Anshuman Khandual [this message]
2020-06-29 8:32 ` Anshuman Khandual
2020-06-27 8:17 ` Christophe Leroy
2020-06-27 8:17 ` Christophe Leroy
2020-06-30 3:53 ` Anshuman Khandual
2020-06-30 3:53 ` Anshuman Khandual
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