From: Julien Grall <julien@xen.org>
To: Juergen Gross <jgross@suse.com>,
xen-devel@lists.xenproject.org, x86@kernel.org,
linux-kernel@vger.kernel.org
Cc: Peter Zijlstra <peterz@infradead.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Andy Lutomirski <luto@kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [Xen-devel] [PATCH] x86/mm: fix dump_pagetables with Xen PV
Date: Fri, 21 Feb 2020 10:51:28 +0000 [thread overview]
Message-ID: <e0f82927-919b-e93b-c07f-bfe4d5b85fe9@xen.org> (raw)
In-Reply-To: <20200221103851.7855-1-jgross@suse.com>
Hi Juergen,
On 21/02/2020 10:38, Juergen Gross wrote:
> Commit 2ae27137b2db89 ("x86: mm: convert dump_pagetables to use
> walk_page_range") broke Xen PV guests as the hypervisor reserved hole
> in the memory map was not taken into account.
>
> Fix that by starting the kernel range only at GUARD_HOLE_END_ADDR.
>
> Fixes: 2ae27137b2db89 ("x86: mm: convert dump_pagetables to use walk_page_range")
> Reported-by: Julien Grall <julien@xen.org>
> Signed-off-by: Juergen Gross <jgross@suse.com>
I can confirm the crash has now disappeared:
Tested-by: Julien Grall <julien@xen.org>
Cheers,
--
Julien Grall
next prev parent reply other threads:[~2020-02-21 10:51 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-21 10:38 Juergen Gross
2020-02-21 10:51 ` Julien Grall [this message]
2020-02-28 15:30 ` Jürgen Groß
2020-02-29 11:49 ` [tip: x86/urgent] x86/mm: Fix " tip-bot2 for Juergen Gross
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