* Re: [Qemu-devel] [PATCH v3] xen-hvm: ignore background I/O sections [not found] <1462811480-16295-1-git-send-email-paul.durrant@citrix.com> @ 2016-05-25 15:52 ` Anthony PERARD 2016-05-25 18:04 ` Paolo Bonzini 0 siblings, 1 reply; 3+ messages in thread From: Anthony PERARD @ 2016-05-25 15:52 UTC (permalink / raw) To: Paul Durrant; +Cc: qemu-devel, xen-devel, Stefano Stabellini, Paolo Bonzini On Mon, May 09, 2016 at 05:31:20PM +0100, Paul Durrant wrote: > Since Xen will correctly handle accesses to unimplemented I/O ports (by > returning all 1's for reads and ignoring writes) there is no need for > QEMU to register backgroud I/O sections. > > This patch therefore adds checks to xen_io_add/del so that sections with > memory-region ops pointing at 'unassigned_io_ops' are ignored. > > Signed-off-by: Paul Durrant <paul.durrant@citrix.com> > Cc: Stefano Stabellini <sstabellini@kernel.org> > Cc: Anthony Perard <anthony.perard@citrix.com> > Cc: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Anthony PERARD <anthony.perard@citrix.com> -- Anthony PERARD ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Qemu-devel] [PATCH v3] xen-hvm: ignore background I/O sections 2016-05-25 15:52 ` [Qemu-devel] [PATCH v3] xen-hvm: ignore background I/O sections Anthony PERARD @ 2016-05-25 18:04 ` Paolo Bonzini 2016-05-26 9:09 ` Stefano Stabellini 0 siblings, 1 reply; 3+ messages in thread From: Paolo Bonzini @ 2016-05-25 18:04 UTC (permalink / raw) To: Anthony PERARD; +Cc: Paul Durrant, qemu-devel, xen-devel, Stefano Stabellini ----- Original Message ----- > From: "Anthony PERARD" <anthony.perard@citrix.com> > To: "Paul Durrant" <paul.durrant@citrix.com> > Cc: qemu-devel@nongnu.org, xen-devel@lists.xenproject.org, "Stefano Stabellini" <sstabellini@kernel.org>, "Paolo > Bonzini" <pbonzini@redhat.com> > Sent: Wednesday, May 25, 2016 5:52:32 PM > Subject: Re: [PATCH v3] xen-hvm: ignore background I/O sections > > On Mon, May 09, 2016 at 05:31:20PM +0100, Paul Durrant wrote: > > Since Xen will correctly handle accesses to unimplemented I/O ports (by > > returning all 1's for reads and ignoring writes) there is no need for > > QEMU to register backgroud I/O sections. > > > > This patch therefore adds checks to xen_io_add/del so that sections with > > memory-region ops pointing at 'unassigned_io_ops' are ignored. > > > > Signed-off-by: Paul Durrant <paul.durrant@citrix.com> > > Cc: Stefano Stabellini <sstabellini@kernel.org> > > Cc: Anthony Perard <anthony.perard@citrix.com> > > Cc: Paolo Bonzini <pbonzini@redhat.com> > > Acked-by: Anthony PERARD <anthony.perard@citrix.com> Do you have a signed GPG key or do I need to apply this for you? Thanks, Paolo ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Qemu-devel] [PATCH v3] xen-hvm: ignore background I/O sections 2016-05-25 18:04 ` Paolo Bonzini @ 2016-05-26 9:09 ` Stefano Stabellini 0 siblings, 0 replies; 3+ messages in thread From: Stefano Stabellini @ 2016-05-26 9:09 UTC (permalink / raw) To: Paolo Bonzini Cc: Anthony PERARD, Paul Durrant, qemu-devel, xen-devel, Stefano Stabellini On Wed, 25 May 2016, Paolo Bonzini wrote: > > From: "Anthony PERARD" <anthony.perard@citrix.com> > > To: "Paul Durrant" <paul.durrant@citrix.com> > > Cc: qemu-devel@nongnu.org, xen-devel@lists.xenproject.org, "Stefano Stabellini" <sstabellini@kernel.org>, "Paolo > > Bonzini" <pbonzini@redhat.com> > > Sent: Wednesday, May 25, 2016 5:52:32 PM > > Subject: Re: [PATCH v3] xen-hvm: ignore background I/O sections > > > > On Mon, May 09, 2016 at 05:31:20PM +0100, Paul Durrant wrote: > > > Since Xen will correctly handle accesses to unimplemented I/O ports (by > > > returning all 1's for reads and ignoring writes) there is no need for > > > QEMU to register backgroud I/O sections. > > > > > > This patch therefore adds checks to xen_io_add/del so that sections with > > > memory-region ops pointing at 'unassigned_io_ops' are ignored. > > > > > > Signed-off-by: Paul Durrant <paul.durrant@citrix.com> > > > Cc: Stefano Stabellini <sstabellini@kernel.org> > > > Cc: Anthony Perard <anthony.perard@citrix.com> > > > Cc: Paolo Bonzini <pbonzini@redhat.com> > > > > Acked-by: Anthony PERARD <anthony.perard@citrix.com> > > Do you have a signed GPG key or do I need to apply this for you? I was going to say, I'll just queue this up in my tree, but I don't have any other commits at this time, so if you are OK with applying this, I am fine with it too. ^ permalink raw reply [flat|nested] 3+ messages in thread
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2016-05-25 15:52 ` [Qemu-devel] [PATCH v3] xen-hvm: ignore background I/O sections Anthony PERARD
2016-05-25 18:04 ` Paolo Bonzini
2016-05-26 9:09 ` Stefano Stabellini
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