From: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
To: Dave Hansen <dave.hansen@intel.com>
Cc: Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
linux-kernel@vger.kernel.org, x86@kernel.org,
Robert Gill <rtgill82@gmail.com>,
"Linux regression tracking (Thorsten Leemhuis)"
<regressions@leemhuis.info>,
antonio.gomez.iglesias@linux.intel.com,
daniel.sneddon@linux.intel.com
Subject: Re: [PATCH] x86/entry_32: Move CLEAR_CPU_BUFFERS before CR3 switch
Date: Thu, 9 May 2024 17:24:34 -0700 [thread overview]
Message-ID: <20240510002434.gevlrqdiuhtosafa@desk> (raw)
In-Reply-To: <e3a8075a-0846-4244-85da-1af45c83bbc4@intel.com>
On Thu, May 09, 2024 at 05:04:36PM -0700, Dave Hansen wrote:
> On 5/9/24 15:17, Pawan Gupta wrote:
> > It probably can go right before the SWITCH_TO_USER_CR3. I didn't have
> > 32-bit setup with dosemu to experiment with. I will attach a debug patch to
> > the bugzilla and request the reporter to test it.
>
> There's an enter_from_vm86.c in the kernel selftests. That will at
> least exercise this path.
Yes, entry_from_vm86.c should be a good test case for this, thanks.
next prev parent reply other threads:[~2024-05-10 0:25 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-26 23:48 [PATCH] x86/entry_32: Move CLEAR_CPU_BUFFERS before CR3 switch Pawan Gupta
2024-05-09 12:19 ` Thorsten Leemhuis
2024-05-09 16:14 ` Dave Hansen
2024-05-09 22:17 ` Pawan Gupta
2024-05-10 0:04 ` Dave Hansen
2024-05-10 0:24 ` Pawan Gupta [this message]
2024-05-10 0:20 ` Dave Hansen
2024-05-10 1:22 ` Pawan Gupta
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