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From: | Anthony Liguori |
Subject: | Re: [Qemu-devel] [RESEND][PATCH] APIC: Do not start zero-period timers |
Date: | Mon, 18 Aug 2008 09:20:46 -0500 |
User-agent: | Thunderbird 2.0.0.16 (X11/20080723) |
Jan Kiszka wrote:
The APIC timer must not start when the initial count is (still) zero. This caused occasional stalls when booting secondary CPUs of Linux SMP guests.
Applied. Thanks.Besides testing, I confirmed that this is what's done in the in-kernel APIC in KVM (which is also used by Xen). It seems really unfortunate to me that there are fixes in the in-kernel APIC that aren't in QEMU (and perhaps vice-versa). I wonder if there's any way to unify the two code bases?
Regards, Anthony Liguori
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