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From: Catalin Marinas <catalin.marinas@arm.com>
To: Jianyong Wu <Jianyong.Wu@arm.com>
Cc: "will@kernel.org" <will@kernel.org>,
	Anshuman Khandual <Anshuman.Khandual@arm.com>,
	"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
	"david@redhat.com" <david@redhat.com>,
	"quic_qiancai@quicinc.com" <quic_qiancai@quicinc.com>,
	"ardb@kernel.org" <ardb@kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
	"gshan@redhat.com" <gshan@redhat.com>,
	Justin He <Justin.He@arm.com>, nd <nd@arm.com>
Subject: Re: [PATCH v3] arm64/mm: avoid fixmap race condition when create pud mapping
Date: Thu, 6 Jan 2022 15:56:30 +0000	[thread overview]
Message-ID: <YdcRLohx777jzWah@arm.com> (raw)
In-Reply-To: <AM9PR08MB7276E0DE6B4224C22B20A89CF44C9@AM9PR08MB7276.eurprd08.prod.outlook.com>

On Thu, Jan 06, 2022 at 10:13:06AM +0000, Jianyong Wu wrote:
> I test this patch in your way using both EDK2 V2.6 and EDK2 v2.7. it's
> peculiar that this issue shows up on v2.6 but not on v2.7.
> For now, I only find that if "CONFIG_DEBUG_LOCK_ALLOC" is enabled, the
> kernel boot will hang. However, I can't debug it by printk as this
> issue happens before pl11 is ready.

I tried earlycon but that doesn't help either.

> I will go on debugging, but very appreciated if someone can give some
> hints on it.

FWIW, passing "nokaslr" on the kernel command line makes it boot (and
this makes debugging harder). That's as far as I've gone.

-- 
Catalin

  reply	other threads:[~2022-01-06 15:56 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-16  8:28 [PATCH v3] arm64/mm: avoid fixmap race condition when create pud mapping Jianyong Wu
2021-12-16 15:19 ` David Hildenbrand
2021-12-17  9:30 ` Mark Rutland
2021-12-17 10:09   ` Jianyong Wu
2022-01-05 18:03 ` Catalin Marinas
2022-01-06 10:13   ` Jianyong Wu
2022-01-06 15:56     ` Catalin Marinas [this message]
2022-01-07  9:10       ` Jianyong Wu
2022-01-07 10:42         ` Catalin Marinas
2022-01-26  4:20           ` Justin He
2022-01-26  8:36             ` Ard Biesheuvel
2022-01-26 10:09               ` Jianyong Wu
2022-01-26 10:12                 ` Ard Biesheuvel
2022-01-26 10:17                   ` David Hildenbrand
2022-01-26 10:28                     ` Jianyong Wu
2022-01-26 10:30                       ` David Hildenbrand
2022-01-26 10:31                         ` David Hildenbrand
2022-01-27  6:24                           ` Jianyong Wu
2022-01-27 12:22                             ` David Hildenbrand
2022-01-27 12:34                               ` Catalin Marinas
2022-01-31  8:13                                 ` Jianyong Wu
2022-01-31  8:10                               ` Jianyong Wu
2022-01-27  1:31               ` Justin He
2022-01-07 10:53         ` Catalin Marinas

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