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From: Manuel Bouyer <bouyer@antioche.eu.org>
To: xen-devel@lists.xenproject.org
Subject: Xen 4.18.5 PV dbregs fail
Date: Mon, 26 May 2025 19:59:14 +0200	[thread overview]
Message-ID: <aDSr8u-7w_Rbf4el@mail.soc.lip6.fr> (raw)

Hello,
since I updated to Xen 4.18.5 (from 4.18.4), NetBSD's dbregs-related tests
are failing. Only for PV; PVH and HVM guests are fine. They are
failing for both 32bits and 64bits guests.

I tracked it down to dr6 being 0xffff0ff0 after the trace trap, when at
last one of the lower bits should be 1 (I think it's bit 0, from the code).

I looked at the commit log between 4.18.4 and 4.18.5 but didn't see
anything obvious.

Any idea ?

-- 
Manuel Bouyer <bouyer@antioche.eu.org>
     NetBSD: 26 ans d'experience feront toujours la difference
--


             reply	other threads:[~2025-05-26 17:59 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-05-26 17:59 Manuel Bouyer [this message]
2025-05-26 18:06 ` Xen 4.18.5 PV dbregs fail Andrew Cooper
2025-05-26 18:17   ` Andrew Cooper
2025-05-26 18:46     ` Manuel Bouyer
2025-05-26 18:50       ` Andrew Cooper
2025-05-26 20:13         ` Manuel Bouyer
2025-05-26 20:30           ` Andrew Cooper
2025-05-26 20:56             ` Manuel Bouyer
2025-05-26 21:10               ` Manuel Bouyer
2025-05-26 21:17                 ` Andrew Cooper
2025-05-26 21:30                   ` Manuel Bouyer
2025-05-26 18:41   ` Manuel Bouyer
2025-05-26 20:53 ` [PATCH] x86/pv: Fix breakpoint reporting Andrew Cooper
2025-05-27 10:59   ` Roger Pau Monné

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