From: Andrew Cooper <andrew.cooper3@citrix.com>
To: Jan Beulich <JBeulich@suse.com>,
xen-devel <xen-devel@lists.xenproject.org>
Cc: Paul Durrant <paul.durrant@citrix.com>
Subject: Re: [PATCH 3/3] x86/vMSI-X: also snoop REP MOVS
Date: Thu, 28 Apr 2016 11:34:02 +0100 [thread overview]
Message-ID: <5721E71A.6040701@citrix.com> (raw)
In-Reply-To: <5721F90402000078000E6B1B@prv-mh.provo.novell.com>
On 28/04/16 10:50, Jan Beulich wrote:
> ... as at least certain versions of Windows use such to update the
> MSI-X table. However, to not overly complicate the logic for now
> - only EFLAGS.DF=0 is being handled,
> - only updates not crossing MSI-X table entry boundaries are handled.
>
> Signed-off-by: Jan Beulich <jbeulich@suse.com>
IMO, under those circumstances we should domain_crash() and be rather
loud on the console.
Perhaps in a debug build only, but this will be a very unpleasant issue
to debug for whomever finds an OS which falls into of those unhandled
situations.
~Andrew
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next prev parent reply other threads:[~2016-04-28 10:34 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-28 9:35 [PATCH 0/3] x86/vMSI-X: further write snoop improvements Jan Beulich
2016-04-28 9:49 ` [PATCH 1/3] x86/vMSI-X: add further checks to snoop logic Jan Beulich
2016-04-28 10:22 ` Andrew Cooper
2016-04-28 10:44 ` Paul Durrant
2016-04-28 9:49 ` [PATCH 2/3] x86/vMSI-X: also snoop qword writes Jan Beulich
2016-04-28 10:27 ` Andrew Cooper
2016-04-28 10:52 ` Paul Durrant
2016-04-28 9:50 ` [PATCH 3/3] x86/vMSI-X: also snoop REP MOVS Jan Beulich
2016-04-28 10:34 ` Andrew Cooper [this message]
2016-04-28 10:44 ` Jan Beulich
2016-04-28 11:17 ` Paul Durrant
2016-04-28 11:44 ` Jan Beulich
2016-04-28 11:58 ` Paul Durrant
2016-04-28 12:30 ` Jan Beulich
2016-04-28 12:44 ` Paul Durrant
2016-04-28 9:51 ` [PATCH 0/3] x86/vMSI-X: further write snoop improvements Jan Beulich
2016-04-28 10:26 ` Wei Liu
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