linux-kernel - Re: x86: Hardware breakpoints are not always triggered

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Message-ID: <56AA883A.5070801@redhat.com>
Date:	Thu, 28 Jan 2016 22:29:30 +0100
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Oleg Nesterov <oleg@...hat.com>, Andrey Wagin <avagin@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Andy Lutomirski <luto@...capital.net>,
	Cyrill Gorcunov <gorcunov@...nvz.org>,
	"criu@...nvz.org" <criu@...nvz.org>, kvm@...r.kernel.org
Subject: Re: x86: Hardware breakpoints are not always triggered



On 28/01/2016 21:53, Oleg Nesterov wrote:
> > We use hardware breakpoints in CRIU and we found that sometimes we set
> > a break-point, but a process doesn't stop on it.
> 
> reproduced, and this certainly looks like kvm bug to me.

Yes, in all likelihood.  Thanks, I'll reproduce and look for a fix.

Paolo