From: Qian Cai <cai@lca.pw>
To: Mike Rapoport <rppt@linux.ibm.com>
Cc: Anshuman Khandual <Anshuman.Khandual@arm.com>,
Linux-MM <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
Vlastimil Babka <vbabka@suse.cz>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Mike Rapoport <rppt@linux.vnet.ibm.com>,
Jason Gunthorpe <jgg@ziepe.ca>,
Dan Williams <dan.j.williams@intel.com>,
Peter Zijlstra <peterz@infradead.org>,
Michal Hocko <mhocko@kernel.org>,
Mark Rutland <Mark.Rutland@arm.com>,
Mark Brown <broonie@kernel.org>,
Steven Price <Steven.Price@arm.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Masahiro Yamada <yamada.masahiro@socionext.com>,
Kees Cook <keescook@chromium.org>,
Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
Matthew Wilcox <willy@infradead.org>,
Sri Krishna chowdary <schowdary@nvidia.com>,
Dave Hansen <dave.hansen@intel.com>,
Russell King - ARM Linux <linux@armlinux.org.uk>,
Michael Ellerman <mpe@ellerman.id.au>,
Paul Mackerras <paulus@samba.org>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
"David S. Miller" <davem@davemloft.net>,
Vineet Gupta <vgupta@synopsys.com>,
James Hogan <jhogan@kernel.org>,
Paul Burton <paul.burton@mips.com>,
Ralf Baechle <ralf@linux-mips.org>,
"Kirill A . Shutemov" <kirill@shutemov.name>,
Gerald Schaefer <gerald.schaefer@de.ibm.com>,
Christophe Leroy <christophe.leroy@c-s.fr>,
Ingo Molnar <mingo@kernel.org>,
linux-snps-arc@lists.infradead.org, linux-mips@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org,
linux-sh@vger.kernel.org, sparclinux@vger.kernel.org,
x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH V12] mm/debug: Add tests validating architecture page table helpers
Date: Tue, 28 Jan 2020 12:30:13 +0000 [thread overview]
Message-ID: <0C97A195-CBF2-43EF-88A0-7683BB9EF892@lca.pw> (raw)
In-Reply-To: <1580174873-18117-1-git-send-email-anshuman.khandual@arm.com>
> On Jan 28, 2020, at 7:10 AM, Mike Rapoport <rppt@linux.ibm.com> wrote:
>
> Aren't x86 and arm64 not decent enough?
> Even if this test could be used to detect regressions only on these two
> platforms, the test is valuable.
The question is does it detect regressions good enough? Where is the list of past bugs that it had found?
It is an usual deal for unproven debugging features remain out of tree first and keep gathering unique bugs it found and then justify for a mainline inclusion with enough data.
WARNING: multiple messages have this Message-ID (diff)
From: Qian Cai <cai@lca.pw>
To: Mike Rapoport <rppt@linux.ibm.com>
Cc: Anshuman Khandual <Anshuman.Khandual@arm.com>,
Linux-MM <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
Vlastimil Babka <vbabka@suse.cz>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Mike Rapoport <rppt@linux.vnet.ibm.com>,
Jason Gunthorpe <jgg@ziepe.ca>,
Dan Williams <dan.j.williams@intel.com>,
Peter Zijlstra <peterz@infradead.org>,
Michal Hocko <mhocko@kernel.org>,
Mark Rutland <Mark.Rutland@arm.com>,
Mark Brown <broonie@kernel.org>,
Steven Price <Steven.Price@arm.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Masahiro Yamada <yamada.masahiro@socionext.com>,
Kees Cook <keescook@chromium.org>,
Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
Matthew Wilcox <willy@infradead.org>,
Sri Krishna chowdary <schowdary@nvidia.com>,
Dave Hansen <dave.hansen@intel.com>,
Russell King - ARM Linux <linux@armlinux.org.uk>,
Michael Ellerman <mpe@ellerman.id.au>,
Paul Mackerras <paulus@samba.org>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
"David S. Miller" <davem@davemloft.net>,
Vineet Gupta <vgupta@synopsys.com>,
James Hogan <jhogan@kernel.org>,
Paul Burton <paul.burton@mips.com>,
Ralf Baechle <ralf@linux-mips.org>,
"Kirill A . Shutemov" <kirill@shutemov.name>,
Gerald Schaefer <gerald.schaefer@de.ibm.com>,
Christophe Leroy <christophe.leroy@c-s.fr>,
Ingo Molnar <mingo@kernel.org>,
linux-snps-arc@lists.infradead.org, linux-mips@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org,
linux-sh@vger.kernel.org, sparclinux@vger.kernel.org,
x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH V12] mm/debug: Add tests validating architecture page table helpers
Date: Tue, 28 Jan 2020 07:30:13 -0500 [thread overview]
Message-ID: <0C97A195-CBF2-43EF-88A0-7683BB9EF892@lca.pw> (raw)
> On Jan 28, 2020, at 7:10 AM, Mike Rapoport <rppt@linux.ibm.com> wrote:
>
> Aren't x86 and arm64 not decent enough?
> Even if this test could be used to detect regressions only on these two
> platforms, the test is valuable.
The question is does it detect regressions good enough? Where is the list of past bugs that it had found?
It is an usual deal for unproven debugging features remain out of tree first and keep gathering unique bugs it found and then justify for a mainline inclusion with enough data.
WARNING: multiple messages have this Message-ID (diff)
From: Qian Cai <cai@lca.pw>
To: Mike Rapoport <rppt@linux.ibm.com>
Cc: Mark Rutland <Mark.Rutland@arm.com>,
linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org,
Peter Zijlstra <peterz@infradead.org>,
James Hogan <jhogan@kernel.org>,
Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Michal Hocko <mhocko@kernel.org>, Linux-MM <linux-mm@kvack.org>,
Paul Mackerras <paulus@samba.org>,
sparclinux@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>,
linux-s390@vger.kernel.org, x86@kernel.org,
Russell King - ARM Linux <linux@armlinux.org.uk>,
Matthew Wilcox <willy@infradead.org>,
Steven Price <Steven.Price@arm.com>,
Jason Gunthorpe <jgg@ziepe.ca>,
Gerald Schaefer <gerald.schaefer@de.ibm.com>,
linux-snps-arc@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
Ingo Molnar <mingo@kernel.org>, Kees Cook <keescook@chromium.org>,
Anshuman Khandual <Anshuman.Khandual@arm.com>,
Masahiro Yamada <yamada.masahiro@socionext.com>,
Mark Brown <broonie@kernel.org>,
"Kirill A . Shutemov" <kirill@shutemov.name>,
Dan Williams <dan.j.williams@intel.com>,
Vlastimil Babka <vbabka@suse.cz>,
Sri Krishna chowdary <schowdary@nvidia.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Dave Hansen <dave.hansen@intel.com>,
linux-mips@vger.kernel.org, Ralf Baechle <ralf@linux-mips.org>,
linux-kernel@vger.kernel.org, Paul Burton <paul.burton@mips.com>,
Mike Rapoport <rppt@linux.vnet.ibm.com>,
Vineet Gupta <vgupta@synopsys.com>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Andrew Morton <akpm@linux-foundation.org>,
linuxppc-dev@lists.ozlabs.org,
"David S. Miller" <davem@davemloft.net>
Subject: Re: [PATCH V12] mm/debug: Add tests validating architecture page table helpers
Date: Tue, 28 Jan 2020 07:30:13 -0500 [thread overview]
Message-ID: <0C97A195-CBF2-43EF-88A0-7683BB9EF892@lca.pw> (raw)
> On Jan 28, 2020, at 7:10 AM, Mike Rapoport <rppt@linux.ibm.com> wrote:
>
> Aren't x86 and arm64 not decent enough?
> Even if this test could be used to detect regressions only on these two
> platforms, the test is valuable.
The question is does it detect regressions good enough? Where is the list of past bugs that it had found?
It is an usual deal for unproven debugging features remain out of tree first and keep gathering unique bugs it found and then justify for a mainline inclusion with enough data.
next prev parent reply other threads:[~2020-01-28 12:30 UTC|newest]
Thread overview: 194+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-28 1:27 [PATCH V12] mm/debug: Add tests validating architecture page table helpers Anshuman Khandual
2020-01-28 1:39 ` Anshuman Khandual
2020-01-28 1:27 ` Anshuman Khandual
2020-01-28 1:27 ` Anshuman Khandual
2020-01-28 1:27 ` Anshuman Khandual
2020-01-28 2:11 ` Qian Cai
2020-01-28 2:11 ` Qian Cai
2020-01-28 2:11 ` Qian Cai
2020-01-28 2:11 ` Qian Cai
2020-01-28 2:11 ` Qian Cai
2020-01-28 3:06 ` Anshuman Khandual
2020-01-28 3:18 ` Anshuman Khandual
2020-01-28 3:06 ` Anshuman Khandual
2020-01-28 3:06 ` Anshuman Khandual
2020-01-28 3:06 ` Anshuman Khandual
2020-01-28 3:33 ` Qian Cai
2020-01-28 3:33 ` Qian Cai
2020-01-28 3:33 ` Qian Cai
2020-01-28 3:33 ` Qian Cai
2020-01-28 3:33 ` Qian Cai
2020-01-28 4:57 ` Anshuman Khandual
2020-01-28 4:58 ` Anshuman Khandual
2020-01-28 4:57 ` Anshuman Khandual
2020-01-28 4:57 ` Anshuman Khandual
2020-01-28 4:57 ` Anshuman Khandual
2020-01-28 5:48 ` Qian Cai
2020-01-28 5:48 ` Qian Cai
2020-01-28 5:48 ` Qian Cai
2020-01-28 5:48 ` Qian Cai
2020-01-28 5:48 ` Qian Cai
2020-01-28 6:17 ` Christophe Leroy
2020-01-28 6:17 ` Christophe Leroy
2020-01-28 6:17 ` Christophe Leroy
2020-01-28 6:17 ` Christophe Leroy
2020-01-28 6:17 ` Christophe Leroy
2020-01-28 6:36 ` Qian Cai
2020-01-28 6:36 ` Qian Cai
2020-01-28 6:36 ` Qian Cai
2020-01-28 6:36 ` Qian Cai
2020-01-28 6:36 ` Qian Cai
2020-01-28 7:03 ` Anshuman Khandual
2020-01-28 7:15 ` Anshuman Khandual
2020-01-28 7:03 ` Anshuman Khandual
2020-01-28 7:03 ` Anshuman Khandual
2020-01-28 7:03 ` Anshuman Khandual
2020-01-28 7:07 ` Qian Cai
2020-01-28 7:07 ` Qian Cai
2020-01-28 7:07 ` Qian Cai
2020-01-28 7:07 ` Qian Cai
2020-01-28 7:07 ` Qian Cai
2020-01-28 6:13 ` Christophe Leroy
2020-01-28 6:13 ` Christophe Leroy
2020-01-28 6:13 ` Christophe Leroy
2020-01-28 6:13 ` Christophe Leroy
2020-01-28 6:13 ` Christophe Leroy
2020-01-28 7:12 ` Qian Cai
2020-01-28 7:12 ` Qian Cai
2020-01-28 7:12 ` Qian Cai
2020-01-28 7:12 ` Qian Cai
2020-01-28 7:12 ` Qian Cai
2020-01-28 11:58 ` Mark Brown
2020-01-28 11:58 ` Mark Brown
2020-01-28 11:58 ` Mark Brown
2020-01-28 11:58 ` Mark Brown
2020-01-28 11:58 ` Mark Brown
2020-01-28 12:09 ` Mike Rapoport
2020-01-28 12:09 ` Mike Rapoport
2020-01-28 12:09 ` Mike Rapoport
2020-01-28 12:09 ` Mike Rapoport
2020-01-28 12:09 ` Mike Rapoport
2020-01-28 17:14 ` Vineet Gupta
2020-01-28 17:14 ` Vineet Gupta
2020-01-28 17:14 ` Vineet Gupta
2020-01-28 17:14 ` Vineet Gupta
2020-01-29 22:20 ` Gerald Schaefer
2020-01-29 22:20 ` Gerald Schaefer
2020-01-29 22:20 ` Gerald Schaefer
2020-01-29 22:20 ` Gerald Schaefer
2020-01-29 22:20 ` Gerald Schaefer
2020-01-30 7:27 ` Mike Rapoport
2020-01-30 7:27 ` Mike Rapoport
2020-01-30 7:27 ` Mike Rapoport
2020-01-30 7:27 ` Mike Rapoport
2020-01-30 7:27 ` Mike Rapoport
2020-01-30 13:32 ` Anshuman Khandual
2020-01-30 13:44 ` Anshuman Khandual
2020-01-30 13:32 ` Anshuman Khandual
2020-01-30 13:32 ` Anshuman Khandual
2020-01-30 13:32 ` Anshuman Khandual
2020-01-28 17:47 ` Catalin Marinas
2020-01-28 17:47 ` Catalin Marinas
2020-01-28 17:47 ` Catalin Marinas
2020-01-28 17:47 ` Catalin Marinas
2020-01-28 17:47 ` Catalin Marinas
2020-01-28 19:07 ` Qian Cai
2020-01-28 19:07 ` Qian Cai
2020-01-28 19:07 ` Qian Cai
2020-01-28 19:07 ` Qian Cai
2020-01-28 19:07 ` Qian Cai
2020-01-29 10:36 ` Catalin Marinas
2020-01-29 10:36 ` Catalin Marinas
2020-01-29 10:36 ` Catalin Marinas
2020-01-29 10:36 ` Catalin Marinas
2020-01-29 10:36 ` Catalin Marinas
2020-01-29 11:09 ` Qian Cai
2020-01-29 11:09 ` Qian Cai
2020-01-29 11:09 ` Qian Cai
2020-01-29 11:09 ` Qian Cai
2020-01-29 11:09 ` Qian Cai
2020-01-28 12:30 ` Qian Cai [this message]
2020-01-28 12:30 ` Qian Cai
2020-01-28 12:30 ` Qian Cai
2020-01-28 17:05 ` Christophe Leroy
2020-01-28 17:05 ` Christophe Leroy
2020-01-28 17:05 ` Christophe Leroy
2020-01-28 17:05 ` Christophe Leroy
2020-01-28 17:05 ` Christophe Leroy
2020-01-30 13:04 ` Anshuman Khandual
2020-01-30 13:16 ` Anshuman Khandual
2020-01-30 13:04 ` Anshuman Khandual
2020-01-30 13:04 ` Anshuman Khandual
2020-01-30 13:04 ` Anshuman Khandual
2020-01-30 14:13 ` Christophe Leroy
2020-01-30 14:13 ` Christophe Leroy
2020-01-30 14:13 ` Christophe Leroy
2020-01-30 14:13 ` Christophe Leroy
2020-01-30 14:13 ` Christophe Leroy
2020-02-02 7:18 ` Anshuman Khandual
2020-02-02 7:30 ` Anshuman Khandual
2020-02-02 7:18 ` Anshuman Khandual
2020-02-02 7:18 ` Anshuman Khandual
2020-02-02 7:18 ` Anshuman Khandual
2020-02-02 8:31 ` Christophe Leroy
2020-02-02 8:31 ` Christophe Leroy
2020-02-02 8:31 ` Christophe Leroy
2020-02-02 8:31 ` Christophe Leroy
2020-02-02 8:31 ` Christophe Leroy
2020-02-02 11:26 ` Qian Cai
2020-02-02 11:26 ` Qian Cai
2020-02-02 11:26 ` Qian Cai
2020-02-02 11:26 ` Qian Cai
2020-02-02 11:26 ` Qian Cai
2020-02-03 15:14 ` Christophe Leroy
2020-02-03 15:14 ` Christophe Leroy
2020-02-03 15:14 ` Christophe Leroy
2020-02-03 15:14 ` Christophe Leroy
2020-02-03 15:14 ` Christophe Leroy
2020-02-03 15:48 ` Qian Cai
2020-02-03 15:48 ` Qian Cai
2020-02-03 15:48 ` Qian Cai
2020-02-03 15:48 ` Qian Cai
2020-02-03 15:48 ` Qian Cai
2020-02-03 15:48 ` Qian Cai
2020-02-02 8:26 ` Anshuman Khandual
2020-02-02 8:38 ` Anshuman Khandual
2020-02-02 8:26 ` Anshuman Khandual
2020-02-02 8:26 ` Anshuman Khandual
2020-02-02 8:26 ` Anshuman Khandual
2020-01-29 22:20 ` Gerald Schaefer
2020-01-29 22:20 ` Gerald Schaefer
2020-01-29 22:20 ` Gerald Schaefer
2020-01-29 22:20 ` Gerald Schaefer
2020-01-29 22:20 ` Gerald Schaefer
2020-01-30 13:11 ` Anshuman Khandual
2020-01-30 13:23 ` Anshuman Khandual
2020-01-30 13:11 ` Anshuman Khandual
2020-01-30 13:11 ` Anshuman Khandual
2020-01-30 13:11 ` Anshuman Khandual
2020-01-30 15:06 ` Anshuman Khandual
2020-01-30 15:18 ` Anshuman Khandual
2020-01-30 15:06 ` Anshuman Khandual
2020-01-30 15:06 ` Anshuman Khandual
2020-01-30 15:06 ` Anshuman Khandual
2020-01-30 15:06 ` Anshuman Khandual
2020-02-10 15:37 ` Catalin Marinas
2020-02-10 15:37 ` Catalin Marinas
2020-02-10 15:37 ` Catalin Marinas
2020-02-10 15:37 ` Catalin Marinas
2020-02-10 15:37 ` Catalin Marinas
2020-02-12 9:42 ` Anshuman Khandual
2020-02-12 9:54 ` Anshuman Khandual
2020-02-12 9:42 ` Anshuman Khandual
2020-02-12 9:42 ` Anshuman Khandual
2020-02-12 9:42 ` Anshuman Khandual
2020-02-12 17:55 ` Gerald Schaefer
2020-02-12 17:55 ` Gerald Schaefer
2020-02-12 17:55 ` Gerald Schaefer
2020-02-12 17:55 ` Gerald Schaefer
2020-02-12 17:55 ` Gerald Schaefer
2020-02-13 2:15 ` Anshuman Khandual
2020-02-13 2:27 ` Anshuman Khandual
2020-02-13 2:15 ` Anshuman Khandual
2020-02-13 2:15 ` Anshuman Khandual
2020-02-13 2:15 ` Anshuman Khandual
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