From: Mike Rapoport <rppt@linux.ibm.com>
To: Qian Cai <cai@lca.pw>
Cc: Mark Rutland <mark.rutland@arm.com>,
catalin.marinas@arm.com, Will Deacon <will.deacon@arm.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
mhocko@kernel.org, linux-mm@kvack.org, vdavydov.dev@gmail.com,
hannes@cmpxchg.org, cgroups@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH -next] arm64/mm: fix a bogus GFP flag in pgd_alloc()
Date: Wed, 12 Jun 2019 09:57:36 +0300 [thread overview]
Message-ID: <20190612065728.GB4761@rapoport-lnx> (raw)
In-Reply-To: <3F6E1B9F-3789-4648-B95C-C4243B57DA02@lca.pw>
Hi,
On Tue, Jun 11, 2019 at 08:46:45AM -0400, Qian Cai wrote:
>
> > On Jun 11, 2019, at 8:41 AM, Mike Rapoport <rppt@linux.ibm.com> wrote:
> >
> > Sorry for the delay, I'm mostly offline these days.
> >
> > I wanted to understand first what is the reason for the failure. I've tried
> > to reproduce it with qemu, but I failed to find a bootable configuration
> > that will have PGD_SIZE != PAGE_SIZE :(
> >
> > Qian Cai, can you share what is your environment and the kernel config?
>
> https://raw.githubusercontent.com/cailca/linux-mm/master/arm64.config
>
> # lscpu
> Architecture: aarch64
> Byte Order: Little Endian
> CPU(s): 256
> On-line CPU(s) list: 0-255
> Thread(s) per core: 4
> Core(s) per socket: 32
> Socket(s): 2
> NUMA node(s): 2
> Vendor ID: Cavium
> Model: 1
> Model name: ThunderX2 99xx
> Stepping: 0x1
> BogoMIPS: 400.00
> L1d cache: 32K
> L1i cache: 32K
> L2 cache: 256K
> L3 cache: 32768K
> NUMA node0 CPU(s): 0-127
> NUMA node1 CPU(s): 128-255
> Flags: fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics cpuid asimdrdm
>
> # dmidecode
> Handle 0x0001, DMI type 1, 27 bytes
> System Information
> Manufacturer: HPE
> Product Name: Apollo 70
> Version: X1
> Wake-up Type: Power Switch
> Family: CN99XX
>
Can you please also send the entire log when the failure happens?
Another question, is the problem exist with PGD_SIZE == PAGE_SIZE?
--
Sincerely yours,
Mike.
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next prev parent reply other threads:[~2019-06-12 6:57 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-04 14:00 [PATCH -next] arm64/mm: fix a bogus GFP flag in pgd_alloc() Qian Cai
2019-06-04 14:23 ` Mark Rutland
2019-06-04 14:30 ` Mark Rutland
2019-06-05 21:33 ` Mike Rapoport
2019-06-04 14:54 ` Mike Rapoport
2019-06-10 11:43 ` Will Deacon
2019-06-10 17:26 ` Qian Cai
2019-06-11 10:03 ` Mark Rutland
2019-06-11 12:41 ` Mike Rapoport
2019-06-11 12:46 ` Qian Cai
2019-06-12 6:57 ` Mike Rapoport [this message]
2019-06-12 18:35 ` Qian Cai
2019-06-11 13:02 ` Mark Rutland
2019-06-13 12:11 ` Mike Rapoport
2019-06-13 13:22 ` Qian Cai
2019-06-13 19:44 ` Mike Rapoport
2019-06-17 15:12 ` Mike Rapoport
2019-06-17 16:36 ` Will Deacon
2019-06-18 6:12 ` Mike Rapoport
2019-06-18 6:54 ` Will Deacon
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