From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Qian Cai <cai@lca.pw>
Cc: Mark Rutland <Mark.Rutland@arm.com>,
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"David S. Miller" <davem@davemloft.net>
Subject: Re: [PATCH V12] mm/debug: Add tests validating architecture page table helpers
Date: Mon, 3 Feb 2020 16:14:24 +0100 [thread overview]
Message-ID: <8e94a073-4045-89aa-6a3b-24847ad7c858@c-s.fr> (raw)
In-Reply-To: <2C4ADFAE-7BB4-42B7-8F54-F036EA7A4316@lca.pw>
Le 02/02/2020 à 12:26, Qian Cai a écrit :
>
>
>> On Jan 30, 2020, at 9:13 AM, Christophe Leroy <christophe.leroy@c-s.fr> wrote:
>>
>> config DEBUG_VM_PGTABLE
>> bool "Debug arch page table for semantics compliance" if ARCH_HAS_DEBUG_VM_PGTABLE || EXPERT
>> depends on MMU
>> default 'n' if !ARCH_HAS_DEBUG_VM_PGTABLE
>> default 'y' if DEBUG_VM
>
> Does it really necessary to potentially force all bots to run this? Syzbot, kernel test robot etc? Does it ever pay off for all their machine times there?
>
Machine time ?
On a 32 bits powerpc running at 132 MHz, the tests takes less than 10ms.
Is it worth taking the risk of not detecting faults by not selecting it
by default ?
[ 5.656916] debug_vm_pgtable: debug_vm_pgtable: Validating
architecture page table helpers
[ 5.665661] debug_vm_pgtable: debug_vm_pgtable: Validated
architecture page table helpers
Christophe
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next prev parent reply other threads:[~2020-02-03 15:14 UTC|newest]
Thread overview: 38+ 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 2:11 ` Qian Cai
2020-01-28 3:06 ` Anshuman Khandual
2020-01-28 3:33 ` Qian Cai
2020-01-28 4:57 ` Anshuman Khandual
2020-01-28 5:48 ` Qian Cai
2020-01-28 6:17 ` Christophe Leroy
2020-01-28 6:36 ` Qian Cai
2020-01-28 7:03 ` Anshuman Khandual
2020-01-28 7:07 ` Qian Cai
2020-01-28 6:13 ` Christophe Leroy
2020-01-28 7:12 ` Qian Cai
2020-01-28 11:58 ` Mark Brown
2020-01-28 12:09 ` Mike Rapoport
2020-01-28 17:14 ` Vineet Gupta
2020-01-29 22:20 ` Gerald Schaefer
2020-01-30 7:27 ` Mike Rapoport
2020-01-30 13:32 ` Anshuman Khandual
2020-01-28 17:47 ` Catalin Marinas
2020-01-28 19:07 ` Qian Cai
2020-01-29 10:36 ` Catalin Marinas
2020-01-29 11:09 ` Qian Cai
2020-01-28 17:05 ` Christophe Leroy
2020-01-30 13:04 ` Anshuman Khandual
2020-01-30 14:13 ` Christophe Leroy
2020-02-02 7:18 ` Anshuman Khandual
2020-02-02 8:31 ` Christophe Leroy
2020-02-02 11:26 ` Qian Cai
2020-02-03 15:14 ` Christophe Leroy [this message]
2020-02-03 15:48 ` Qian Cai
2020-02-02 8:26 ` Anshuman Khandual
2020-01-29 22:20 ` Gerald Schaefer
2020-01-30 13:11 ` Anshuman Khandual
2020-01-30 15:06 ` Anshuman Khandual
2020-02-10 15:37 ` Catalin Marinas
2020-02-12 9:42 ` Anshuman Khandual
2020-02-12 17:55 ` Gerald Schaefer
2020-02-13 2:15 ` Anshuman Khandual
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