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From: | Avi Kivity |
Subject: | [Qemu-devel] Re: [PATCH] kvm: x86: Prevent sign extension of DR7 in guest debugging mode |
Date: | Mon, 27 Dec 2010 17:38:14 +0200 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20101209 Fedora/3.1.7-0.35.b3pre.fc14 Lightning/1.0b3pre Thunderbird/3.1.7 |
On 12/27/2010 04:58 PM, Jan Kiszka wrote:
From: Jan Kiszka<address@hidden> This unbreaks guest debugging when the 4th hardware breakpoint used for guest debugging is a watchpoint of 4 or 8 byte lenght. The 31st bit of DR7 is set in that case and used to cause a sign extension to the high word which was breaking the guest state (vm entry failure).
Applied to uq/master, thanks. -- error compiling committee.c: too many arguments to function
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