From: Thomas Gleixner <tglx@linutronix.de>
To: Tony W Wang-oc <TonyWWang-oc@zhaoxin.com>,
Dave Hansen <dave.hansen@intel.com>,
mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com,
x86@kernel.org, hpa@zytor.com, keescook@chromium.org,
tony.luck@intel.com, gpiccoli@igalia.com, mat.jonczyk@o2.pl,
rdunlap@infradead.org, alexandre.belloni@bootlin.com,
mario.limonciello@amd.com, yaolu@kylinos.cn, bhelgaas@google.com,
justinstitt@google.com, linux-kernel@vger.kernel.org,
linux-hardening@vger.kernel.org
Cc: CobeChen@zhaoxin.com, TimGuo@zhaoxin.com, LeoLiu-oc@zhaoxin.com,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH] x86/hpet: Read HPET directly if panic in progress
Date: Wed, 29 May 2024 09:45:22 +0200 [thread overview]
Message-ID: <87fru19i3x.ffs@tglx> (raw)
In-Reply-To: <199ba55d-8eb8-47df-9f42-55a865b51ab7@zhaoxin.com>
On Wed, May 29 2024 at 14:44, Tony W Wang-oc wrote:
> Actually, this scenario is what this patch is trying to solve.
>
> We encountered hpet_lock deadlock from the call path of the MCE handler,
> and this hpet_lock deadlock scenario may happen when others exceptions'
> handler like #PF/#GP... to call the panic. So read_hpet should avoid
> deadlock if panic in progress.
That's not what your changelog says.
next prev parent reply other threads:[~2024-05-29 7:45 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-28 6:38 [PATCH] x86/hpet: Read HPET directly if panic in progress Tony W Wang-oc
2024-05-28 14:18 ` Dave Hansen
2024-05-28 22:12 ` Thomas Gleixner
2024-05-28 23:22 ` Linus Torvalds
2024-05-29 7:42 ` Thomas Gleixner
2024-06-05 6:23 ` Tony W Wang-oc
2024-06-05 9:36 ` Borislav Petkov
2024-06-05 10:10 ` Tony W Wang-oc
2024-06-05 11:33 ` Borislav Petkov
2024-06-05 12:02 ` Tony W Wang-oc
2024-06-05 15:51 ` Luck, Tony
2024-06-06 8:44 ` Tony W Wang-oc
2024-06-06 17:00 ` Luck, Tony
2024-05-29 4:39 ` Tony W Wang-oc
2024-05-29 6:44 ` Tony W Wang-oc
2024-05-29 7:45 ` Thomas Gleixner [this message]
2024-05-29 8:15 ` Tony W Wang-oc
2024-05-29 7:44 ` Thomas Gleixner
2024-07-01 11:09 ` Tony W Wang-oc
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