From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Anshuman Khandual <anshuman.khandual@arm.com>, Qian Cai <cai@lca.pw>
Cc: Linux Memory Management List <linux-mm@kvack.org>,
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 <linuxppc-dev@lists.ozlabs.org>,
linux-s390@vger.kernel.org, linux-riscv@lists.infradead.org,
the arch/x86 maintainers <x86@kernel.org>,
linux-arch@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Subject: Re: [PATCH V14] mm/debug: Add tests validating architecture page table helpers
Date: Thu, 5 Mar 2020 06:43:23 +0100 [thread overview]
Message-ID: <bcba7b7f-f351-4ee7-d74e-004a0bfbee47@c-s.fr> (raw)
In-Reply-To: <57a3bc61-bbd5-e251-9621-7bc28f7901a1@arm.com>
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 <christophe.leroy@c-s.fr> 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 anything here.
>
> As the patch has been dropped from Linux next (next-20200304) perhaps in
> order to fold back the __pa_symbol() fix [1], so I am planning to respin
> the original patch once more as V15 while adding Qian's signed off by for
> the powerpc part. For now lets enable radix MMU ppc64 along with existing
> ppc32. As PPC_RADIX_MMU depends on PPC_BOOK3S_64, the following change
> should be good enough ?
I don't think so, even if you have the Radix MMU compiled in, hash MMU
is used when Radix is not available or disabled. So until the Hash MMU
problem is fixed, you cannot enable it by default.
Christophe
next prev parent reply other threads:[~2020-03-05 5:43 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-17 3:17 [PATCH V14] mm/debug: Add tests validating architecture page table helpers Anshuman Khandual
2020-02-24 1:58 ` Anshuman Khandual
2020-02-26 14:09 ` Qian Cai
2020-02-26 14:12 ` Qian Cai
2020-02-26 14:44 ` Christophe Leroy
2020-02-27 2:34 ` Anshuman Khandual
2020-02-27 4:03 ` Andrew Morton
2020-02-27 4:07 ` Anshuman Khandual
2020-02-26 14:45 ` Christophe Leroy
2020-02-26 15:51 ` Qian Cai
2020-03-02 19:40 ` Qian Cai
2020-03-03 5:55 ` Anshuman Khandual
2020-03-04 1:39 ` Qian Cai
2020-03-04 6:48 ` Christophe Leroy
2020-03-04 11:29 ` Qian Cai
2020-03-05 0:54 ` Anshuman Khandual
2020-03-05 5:43 ` Christophe Leroy [this message]
2020-03-05 6:23 ` Anshuman Khandual
2020-03-03 5:59 ` Christophe Leroy
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=bcba7b7f-f351-4ee7-d74e-004a0bfbee47@c-s.fr \
--to=christophe.leroy@c-s.fr \
--cc=akpm@linux-foundation.org \
--cc=aneesh.kumar@linux.ibm.com \
--cc=anshuman.khandual@arm.com \
--cc=benh@kernel.crashing.org \
--cc=borntraeger@de.ibm.com \
--cc=bp@alien8.de \
--cc=cai@lca.pw \
--cc=catalin.marinas@arm.com \
--cc=gor@linux.ibm.com \
--cc=heiko.carstens@de.ibm.com \
--cc=hpa@zytor.com \
--cc=kirill@shutemov.name \
--cc=linux-arch@vger.kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux-riscv@lists.infradead.org \
--cc=linux-s390@vger.kernel.org \
--cc=linux-snps-arc@lists.infradead.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=mingo@redhat.com \
--cc=mpe@ellerman.id.au \
--cc=palmer@dabbelt.com \
--cc=paul.walmsley@sifive.com \
--cc=paulus@samba.org \
--cc=rppt@linux.ibm.com \
--cc=tglx@linutronix.de \
--cc=vgupta@synopsys.com \
--cc=will@kernel.org \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).