t; will be done in Xen side and so skip the check in Qemu to avoid blocking
> > Xen creating >255 vcpus.
> > We may make Qemu have knowledge of the vIOMMU device if it's
> > necessary when adding new function.
>
> I was expecting it to go through the PC
-by: Eduardo Habkost
Reviewed-by: David Gibson
Acked-by: David Gibson
Reviewed-by: Marcel Apfelbaum
Reviewed-by: Michael S. Tsirkin
Signed-off-by: Michael S. Tsirkin
---
hw/acpi/piix4.c | 1 +
hw/audio/ac97.c | 4
hw/audio/es1370.c
From: Eduardo Habkost
xen-pt doesn't set the is_express field, but is supposed to be
able to handle PCI Express devices too. Mark it as hybrid.
Suggested-by: Jan Beulich
Signed-off-by: Eduardo Habkost
Reviewed-by: Michael S. Tsirkin
Signed-off-by: Michael S. Tsirkin
---
hw/xen/xen
On Fri, Oct 13, 2017 at 03:53:26PM +0800, Haozhong Zhang wrote:
> On 10/12/17 17:45 +0200, Paolo Bonzini wrote:
> > On 12/10/2017 14:45, Haozhong Zhang wrote:
> > > Basically, QEMU builds two ROMs for guest, /rom@etc/acpi/tables and
> > > /rom@etc/table-loader. The former is unstructured to guest,
On Fri, Oct 13, 2017 at 03:46:39PM -0700, Stefano Stabellini wrote:
> On Fri, 13 Oct 2017, Jan Beulich wrote:
> > >>> On 13.10.17 at 13:13, wrote:
> > > To Jan, Andrew, Stefano and Anthony,
> > >
> > > what do you think about allowing QEMU to build the entire guest ACPI
> > > and letting SeaBIOS
On Fri, Aug 18, 2017 at 05:00:18PM +0100, Anthony PERARD wrote:
> > > > >
> > > > > Clean it up after 2.10.
> > > > >
> > >
> > > So is the v2 good enough or do I need to resend it?
> > Do you really need it in 2.10?
> > it's only 2 days left till release so unless it's blocker
> > I'd wait ti
On Fri, Aug 18, 2017 at 04:19:57PM +0200, Igor Mammedov wrote:
> > > >
> > > > Clean it up after 2.10.
> > > >
> >
> > So is the v2 good enough or do I need to resend it?
> Do you really need it in 2.10?
> it's only 2 days left till release so unless it's blocker
> I'd wait till after release
On Thu, Aug 17, 2017 at 05:23:46PM +0100, Anthony PERARD wrote:
> This means that the function will be call and the property
> acpi-pcihp-bsel will be set even if ACPI build is disable.
>
> To do PCI passthrough with Xen, the property acpi-pcihp-bsel needs to be
> set, but this was done only when
On Tue, Aug 15, 2017 at 02:07:51PM +0200, Igor Mammedov wrote:
> On Tue, 15 Aug 2017 12:15:48 +0100
> Anthony PERARD wrote:
>
> > To do PCI passthrough with Xen, the property acpi-pcihp-bsel needs to be
> > set, but this was done only when ACPI tables are built which is not
> > needed for a Xen g
On Mon, Aug 14, 2017 at 05:45:02PM +0100, Anthony PERARD wrote:
> On Mon, Aug 14, 2017 at 06:53:14PM +0300, Michael S. Tsirkin wrote:
> > On Mon, Aug 14, 2017 at 03:55:50PM +0100, Anthony PERARD wrote:
> > > On Fri, Aug 11, 2017 at 08:18:28PM +0300, Michael S. Tsirkin wrote:
>
On Mon, Aug 14, 2017 at 03:55:50PM +0100, Anthony PERARD wrote:
> On Fri, Aug 11, 2017 at 08:18:28PM +0300, Michael S. Tsirkin wrote:
> > On Fri, Aug 11, 2017 at 04:11:37PM +0100, Anthony PERARD wrote:
> > > To do PCI passthrough with Xen, the property acpi-pcihp-bsel needs to
On Fri, Aug 11, 2017 at 04:11:37PM +0100, Anthony PERARD wrote:
> To do PCI passthrough with Xen, the property acpi-pcihp-bsel needs to be
> set, but this was done only when ACPI tables are built which is not
> needed for a Xen guest. The need for the property starts with commit
> "pc: pcihp: avoid
n actually see whenever max-ram-below-4g
is zero or not.
Reported-by: Anthony PERARD
Tested-by: Anthony PERARD
Signed-off-by: Gerd Hoffmann
Reviewed-by: Michael S. Tsirkin
Signed-off-by: Michael S. Tsirkin
---
hw/i386/pc.c | 2 +-
hw/i386/pc_p
n actually see whenever max-ram-below-4g
is zero or not.
Reported-by: Anthony PERARD
Tested-by: Anthony PERARD
Signed-off-by: Gerd Hoffmann
Reviewed-by: Michael S. Tsirkin
Signed-off-by: Michael S. Tsirkin
---
hw/i386/pc.c | 2 +-
hw/i386/pc_p
Rename controller flag to make it clearer what it means.
Add some documentation as well.
Signed-off-by: Michael S. Tsirkin
---
include/hw/pci/msi.h | 2 +-
hw/i386/kvm/apic.c | 2 +-
hw/i386/xen/xen_apic.c | 2 +-
hw/intc/apic.c | 2 +-
hw/intc
Rename controller flag to make it clearer what it means.
Add some documentation as well.
Signed-off-by: Michael S. Tsirkin
---
include/hw/pci/msi.h | 2 +-
hw/i386/kvm/apic.c | 2 +-
hw/i386/xen/xen_apic.c | 2 +-
hw/intc/apic.c | 2 +-
hw/intc
On Tue, Feb 16, 2016 at 09:48:58PM -0800, Andy Lutomirski wrote:
> On Tue, Feb 2, 2016 at 9:46 PM, Andy Lutomirski wrote:
> > This switches virtio to use the DMA API on Xen and if requested by
> > module option.
>
> Michael, any update on this?
>
> --Andy
I was hoping for an explicit ack from D
e by ignoring the masking bit for MSI and MSI-X which have
been remapped into pirqs.
Signed-off-by: Stefano Stabellini
Reviewed-by: Michael S. Tsirkin
Signed-off-by: Michael S. Tsirkin
---
include/hw/xen/xen.h | 1 +
hw/pci/msi.c | 9 -
hw/pci/msix.c| 12 ++--
e by ignoring the masking bit for MSI and MSI-X which have
been remapped into pirqs.
Signed-off-by: Stefano Stabellini
Reviewed-by: Michael S. Tsirkin
Signed-off-by: Michael S. Tsirkin
---
include/hw/xen/xen.h | 1 +
hw/pci/msi.c | 9 -
hw/pci/msix.c| 12 ++--
On Thu, Feb 04, 2016 at 05:05:46PM +, Stefano Stabellini wrote:
> Hi Michael,
>
> do you have any comments on this?
I dislike how it spreads xen specific stuff around,
but I don't have a better idea at the moment, so
I applied this.
> On Wed, 13 Jan 2016, Stefano Stabellini wrote:
> > On Xen
On Tue, Feb 02, 2016 at 09:46:36PM -0800, Andy Lutomirski wrote:
> virtio_ring currently sends the device (usually a hypervisor)
> physical addresses of its I/O buffers. This is okay when DMA
> addresses and physical addresses are the same thing, but this isn't
> always the case. For example, thi
On Mon, Feb 01, 2016 at 10:00:56AM -0800, Andy Lutomirski wrote:
> This leaves vring_new_virtqueue alone for compatbility, but it
> adds two new improved APIs:
>
> vring_create_virtqueue: Creates a virtqueue backed by automatically
> allocated coherent memory. (Some day it this could be extended
On Mon, Feb 01, 2016 at 11:22:03AM +, David Woodhouse wrote:
> On Thu, 2016-01-28 at 18:31 -0800, Andy Lutomirski wrote:
> > This is a kludge, but no one has come up with a a better idea yet.
> > We'll introduce DMA API support guarded by vring_use_dma_api().
> > Eventually we may be able to re
On Sun, Jan 31, 2016 at 12:13:58PM -0800, Andy Lutomirski wrote:
> On Sun, Jan 31, 2016 at 12:09 PM, Michael S. Tsirkin wrote:
> > On Fri, Jan 29, 2016 at 10:34:59AM +, David Vrabel wrote:
> >> On 29/01/16 02:31, Andy Lutomirski wrote:
> >> >
On Thu, Jan 28, 2016 at 06:31:13PM -0800, Andy Lutomirski wrote:
> This switches virtio to use the DMA API on Xen and if requested by
> module option.
>
> This fixes virtio on Xen, and it should break anything because it's
> off by default on everything except Xen PV on x86.
>
> To the Xen people
On Fri, Jan 29, 2016 at 10:34:59AM +, David Vrabel wrote:
> On 29/01/16 02:31, Andy Lutomirski wrote:
> > Signed-off-by: Andy Lutomirski
> > ---
> > drivers/virtio/virtio_ring.c | 12
> > 1 file changed, 12 insertions(+)
> >
> > diff --git a/drivers/virtio/virtio_ring.c b/driver
On Wed, Jan 13, 2016 at 02:26:16PM -0800, Leonid Yegoshin wrote:
> And all that is out-of-topic here in my mind. I just want to be sure that
> this patchset still provides a use of a specific lightweight SYNCs on MIPS
> vs bold and heavy generalized "SYNC 0" in any case.
>
> - Leonid.
Of course i
On Tue, Jan 12, 2016 at 08:28:44AM -0800, Paul E. McKenney wrote:
> On Sun, Jan 10, 2016 at 04:16:32PM +0200, Michael S. Tsirkin wrote:
> > From: Davidlohr Bueso
> >
> > With commit b92b8b35a2e ("locking/arch: Rename set_mb() to smp_store_mb()")
> > it wa
g
>
>
> > -Original Message-
> > From: Gerd Hoffmann [mailto:kra...@redhat.com]
> > Sent: Monday, January 11, 2016 6:32 PM
> > To: Hao, Xudong
> > Cc: Stefano Stabellini ; Lars Kurth
> > ; xen-de...@lists.xensource.com; Michael S. Tsirkin
On Mon, Jan 11, 2016 at 05:14:14PM -0800, Leonid Yegoshin wrote:
> On 01/10/2016 06:18 AM, Michael S. Tsirkin wrote:
> >On mips dma_rmb, dma_wmb, smp_store_mb, read_barrier_depends,
> >smp_read_barrier_depends, smp_store_release and smp_load_acquire match
> >the asm-generic v
On Tue, Jan 05, 2016 at 12:09:30AM +, James Hogan wrote:
> Hi Michael,
>
> On Thu, Dec 31, 2015 at 09:08:22PM +0200, Michael S. Tsirkin wrote:
> > This defines __smp_xxx barriers for metag,
> > for use by virtualization.
> >
> > smp_xxx barriers are removed
On Mon, Jan 11, 2016 at 12:59:25PM +0200, Michael S. Tsirkin wrote:
> As part of memory barrier cleanup, this patchset
> extends checkpatch to make it easier to stop
> incorrect memory barrier usage.
>
> This replaces the checkpatch patches in my series
> arch: barrier
d be useful
>
>
> > > -Original Message-
> > > From: Stefano Stabellini [mailto:stefano.stabell...@eu.citrix.com]
> > > Sent: Friday, January 8, 2016 7:57 PM
> > > To: Hao, Xudong
> > > Cc: Stefano Stabellini ; Lars Kurth
> > > ; Lars Ku
Add virt_ barriers to list of barriers to check for
presence of a comment.
Signed-off-by: Michael S. Tsirkin
---
scripts/checkpatch.pl | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 25476c2..c7bf1aa 100755
--- a/scripts
a checkpatch test so it will trigger a warning.
Reported-by: Russell King
Signed-off-by: Michael S. Tsirkin
---
scripts/checkpatch.pl | 10 ++
1 file changed, 10 insertions(+)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 94b4e33..25476c2 100755
--- a/scripts/checkpa
SMP-only barriers were missing in checkpatch.pl
Refactor code slightly to make adding more variants easier.
Signed-off-by: Michael S. Tsirkin
---
scripts/checkpatch.pl | 22 +-
1 file changed, 21 insertions(+), 1 deletion(-)
diff --git a/scripts/checkpatch.pl b/scripts
unnecessary capture groups
rename smp_barriers to smp_barrier_stems for clarity
add barriers before/after atomic
Changes from v1:
catch optional\s* before () in barriers
rewrite using qr{} instead of map
Michael S. Tsirkin (3):
checkpatch.pl: add missing memory
On Mon, Jan 11, 2016 at 09:40:18PM +1100, Julian Calaby wrote:
> Hi Michael,
>
> On Mon, Jan 11, 2016 at 9:35 PM, Michael S. Tsirkin wrote:
> > On Sun, Jan 10, 2016 at 02:52:16PM -0800, Joe Perches wrote:
> >> On Mon, 2016-01-11 at 09:13 +1100, Julian Calaby wrote:
> &
On Sun, Jan 10, 2016 at 02:52:16PM -0800, Joe Perches wrote:
> On Mon, 2016-01-11 at 09:13 +1100, Julian Calaby wrote:
> > On Mon, Jan 11, 2016 at 6:31 AM, Michael S. Tsirkin wrote:
> > > Add virt_ barriers to list of barriers to check for
> > > presence of a comme
SMP-only barriers were missing in checkpatch.pl
Refactor code slightly to make adding more variants easier.
Signed-off-by: Michael S. Tsirkin
---
scripts/checkpatch.pl | 22 +-
1 file changed, 21 insertions(+), 1 deletion(-)
diff --git a/scripts/checkpatch.pl b/scripts
a checkpatch test so it will trigger a warning.
Reported-by: Russell King
Signed-off-by: Michael S. Tsirkin
---
scripts/checkpatch.pl | 10 ++
1 file changed, 10 insertions(+)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 1c01b7d..15cfca4 100755
--- a/scripts/checkpa
Add virt_ barriers to list of barriers to check for
presence of a comment.
Signed-off-by: Michael S. Tsirkin
---
scripts/checkpatch.pl | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 15cfca4..4466579 100755
--- a/scripts
{} instead of map
Michael S. Tsirkin (3):
checkpatch.pl: add missing memory barriers
checkpatch: check for __smp outside barrier.h
checkpatch: add virt barriers
scripts/checkpatch.pl | 33 -
1 file changed, 32 insertions(+), 1 deletion(-)
--
MST
On Sun, Jan 10, 2016 at 07:17:31AM -0800, Joe Perches wrote:
> On Sun, 2016-01-10 at 07:07 -0800, Joe Perches wrote:
> > On Sun, 2016-01-10 at 13:56 +0200, Michael S. Tsirkin wrote:
> > > SMP-only barriers were missing in checkpatch.pl
> > >
> > > Refact
On Sun, Jan 10, 2016 at 07:07:05AM -0800, Joe Perches wrote:
> On Sun, 2016-01-10 at 13:56 +0200, Michael S. Tsirkin wrote:
> > SMP-only barriers were missing in checkpatch.pl
> >
> > Refactor code slightly to make adding more variants easier.
> []
> > diff --git a/s
Schwidefsky
Signed-off-by: Michael S. Tsirkin
---
arch/s390/include/asm/barrier.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h
index 4d26fa4..5c8db3c 100644
--- a/arch/s390/include/asm/barrier.h
+++ b/arch/s390/include/asm
exact purpose.
Signed-off-by: Michael S. Tsirkin
Acked-by: David Vrabel
---
include/xen/interface/io/ring.h | 16
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/include/xen/interface/io/ring.h b/include/xen/interface/io/ring.h
index 7dc685b..21f4fbd 100644
--- a
/barrier.h here to make sure the file is self-contained.
Suggested-by: David Vrabel
Signed-off-by: Michael S. Tsirkin
---
drivers/xen/events/events_fifo.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/xen/events/events_fifo.c b/drivers/xen/events/events_fifo.c
index
exact purpose.
Signed-off-by: Michael S. Tsirkin
Acked-by: David Vrabel
---
drivers/xen/xenbus/xenbus_comms.c | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/xen/xenbus/xenbus_comms.c
b/drivers/xen/xenbus/xenbus_comms.c
index fdb0f33..ecdecce 100644
--- a
The s390 kernel is SMP to 99.99%, we just didn't bother with a
non-smp variant for the memory-barriers. If the generic header
is used we'd get the non-smp version for free. It will save a
small amount of text space for CONFIG_SMP=n.
Suggested-by: Martin Schwidefsky
Signed-off-by:
a checkpatch test so it will trigger a warning.
Reported-by: Russell King
Signed-off-by: Michael S. Tsirkin
---
scripts/checkpatch.pl | 10 ++
1 file changed, 10 insertions(+)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 97b8b62..a96adcb 100755
--- a/scripts/checkpa
Add virt_ barriers to list of barriers to check for
presence of a comment.
Signed-off-by: Michael S. Tsirkin
---
scripts/checkpatch.pl | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index a96adcb..5ca272b 100755
--- a/scripts
-by: David Miller
Signed-off-by: Michael S. Tsirkin
---
include/asm-generic/barrier.h | 11 +++
Documentation/memory-barriers.txt | 28 +++-
2 files changed, 34 insertions(+), 5 deletions(-)
diff --git a/include/asm-generic/barrier.h b/include/asm-generic
Looks like future sh variants will support a 4-byte cas which will be
used to implement 1 and 2 byte xchg.
This is exactly what we do for llsc now, move the portable part of the
code into a separate header so it's easy to reuse.
Suggested-by: Rich Felker
Signed-off-by: Michael S. Ts
r pointers.
Signed-off-by: Michael S. Tsirkin
---
include/linux/virtio_ring.h | 11 +++
drivers/virtio/virtio_ring.c | 15 +--
2 files changed, 20 insertions(+), 6 deletions(-)
diff --git a/include/linux/virtio_ring.h b/include/linux/virtio_ring.h
index f3fa55b..a156e2b 10
SMP-only barriers were missing in checkpatch.pl
Refactor code slightly to make adding more variants easier.
Signed-off-by: Michael S. Tsirkin
---
scripts/checkpatch.pl | 20 +++-
1 file changed, 19 insertions(+), 1 deletion(-)
diff --git a/scripts/checkpatch.pl b/scripts
-by: Michael S. Tsirkin
---
include/linux/virtio_ring.h | 25 -
1 file changed, 4 insertions(+), 21 deletions(-)
diff --git a/include/linux/virtio_ring.h b/include/linux/virtio_ring.h
index 67e06fe..f3fa55b 100644
--- a/include/linux/virtio_ring.h
+++ b/include/linux
.
Suggested-by: Rich Felker
Signed-off-by: Michael S. Tsirkin
---
arch/sh/include/asm/cmpxchg-grb.h | 22 +++
arch/sh/include/asm/cmpxchg-irq.h | 11
arch/sh/include/asm/cmpxchg-llsc.h | 58 +++---
arch/sh/include/asm/cmpxchg.h | 3 ++
4 files
!SMP.
We switch to __smp_XXX barriers in the next patch.
Cc: Peter Zijlstra
Cc: Alexander Duyck
Signed-off-by: Michael S. Tsirkin
---
include/linux/virtio_ring.h | 23 +++
1 file changed, 19 insertions(+), 4 deletions(-)
diff --git a/include/linux/virtio_ring.h b/include
This defines __smp_xxx barriers for x86,
for use by virtualization.
smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
Signed-off-by: Michael S. Tsirkin
Acked-by: Arnd Bergmann
---
arch/x86/include/asm/barrier.h | 31 ---
1 file
sh variant of smp_store_mb() calls xchg() on !SMP which is stronger than
implied by both the name and the documentation.
define __smp_store_mb instead: code in asm-generic/barrier.h
will then define smp_store_mb correctly depending on
CONFIG_SMP.
Signed-off-by: Michael S. Tsirkin
Acked-by: Arnd
This defines __smp_xxx barriers for tile,
for use by virtualization.
Some smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
Note: for 32 bit, keep smp_mb__after_atomic around since it's faster
than the generic implementation.
Signed-off-by: Michael S. Ts
This defines __smp_xxx barriers for sparc,
for use by virtualization.
smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
Signed-off-by: Michael S. Tsirkin
Acked-by: Arnd Bergmann
Acked-by: David S. Miller
---
arch/sparc/include/asm/barrier_64.h | 8
This defines __smp_xxx barriers for xtensa,
for use by virtualization.
smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
Signed-off-by: Michael S. Tsirkin
Acked-by: Arnd Bergmann
---
arch/xtensa/include/asm/barrier.h | 4 ++--
1 file changed, 2 insertions
This defines __smp_xxx barriers for s390,
for use by virtualization.
Some smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
Note: smp_mb, smp_rmb and smp_wmb are defined as full barriers
unconditionally on this architecture.
Signed-off-by: Michael S. Tsirkin
/barriers.h) and smp_mb__before_llsc (for use elsewhere on this
architecture).
Signed-off-by: Michael S. Tsirkin
Acked-by: Arnd Bergmann
---
arch/mips/include/asm/barrier.h | 26 ++
1 file changed, 14 insertions(+), 12 deletions(-)
diff --git a/arch/mips/include/asm/barrier.h
This defines __smp_xxx barriers for blackfin,
for use by virtualization.
smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
Signed-off-by: Michael S. Tsirkin
Acked-by: Arnd Bergmann
---
arch/blackfin/include/asm/barrier.h | 4 ++--
1 file changed, 2
This defines __smp_xxx barriers for arm,
for use by virtualization.
smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
This reduces the amount of arch-specific boiler-plate code.
Signed-off-by: Michael S. Tsirkin
Acked-by: Arnd Bergmann
Acked-by: Russell King
This defines __smp_xxx barriers for arm64,
for use by virtualization.
smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
Note: arm64 does not support !SMP config,
so smp_xxx and __smp_xxx are always equivalent.
Signed-off-by: Michael S. Tsirkin
Acked-by: Arnd
between
SMP and !SMP. For this reason, this patch introduces a wrapper
metag_fence() that doesn't depend on CONFIG_SMP.
fence() is then defined using that, depending on CONFIG_SMP.
Signed-off-by: Michael S. Tsirkin
Acked-by: Arnd Bergmann
---
arch/metag/include/asm/barrier.h
This defines __smp_xxx barriers for ia64,
for use by virtualization.
smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
This reduces the amount of arch-specific boiler-plate code.
Signed-off-by: Michael S. Tsirkin
Acked-by: Tony Luck
Acked-by: Arnd Bergmann
As on most architectures, on x86 read_barrier_depends and
smp_read_barrier_depends are empty. Drop the local definitions and pull
the generic ones from asm-generic/barrier.h instead: they are identical.
This is in preparation to refactoring this code area.
Signed-off-by: Michael S. Tsirkin
On x86/um CONFIG_SMP is never defined. As a result, several macros
match the asm-generic variant exactly. Drop the local definitions and
pull in asm-generic/barrier.h instead.
This is in preparation to refactoring this code area.
Signed-off-by: Michael S. Tsirkin
Acked-by: Arnd Bergmann
Acked
ones or barrier() depending on
SMP, identically for all architectures.
We keep ifndef guards around them for now - once/if all
architectures are converted to use the generic
code, we'll be able to remove these.
Suggested-by: Peter Zijlstra
Signed-off-by: Michael S. Tsirkin
Acked-by: Arnd Ber
.
Signed-off-by: Michael S. Tsirkin
Acked-by: Arnd Bergmann
---
arch/mips/include/asm/barrier.h | 25 ++---
1 file changed, 2 insertions(+), 23 deletions(-)
diff --git a/arch/mips/include/asm/barrier.h b/arch/mips/include/asm/barrier.h
index 752e0b8..3eac4b9 100644
--- a/arch/mips
-off-by: Michael S. Tsirkin
Acked-by: Arnd Bergmann
---
arch/arm64/include/asm/barrier.h | 9 +
1 file changed, 1 insertion(+), 8 deletions(-)
diff --git a/arch/arm64/include/asm/barrier.h b/arch/arm64/include/asm/barrier.h
index 9622eb4..91a43f4 100644
--- a/arch/arm64/include/asm
This defines __smp_xxx barriers for powerpc
for use by virtualization.
smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
This reduces the amount of arch-specific boiler-plate code.
Signed-off-by: Michael S. Tsirkin
Acked-by: Arnd Bergmann
Acked-by: Boqun
.
Signed-off-by: Michael S. Tsirkin
Acked-by: Arnd Bergmann
---
arch/metag/include/asm/barrier.h | 25 ++---
1 file changed, 2 insertions(+), 23 deletions(-)
diff --git a/arch/metag/include/asm/barrier.h b/arch/metag/include/asm/barrier.h
index 172b7e5..b5b778b 100644
--- a/arch
refactoring this code area.
Signed-off-by: Michael S. Tsirkin
Acked-by: Arnd Bergmann
Acked-by: Russell King
---
arch/arm/include/asm/barrier.h | 23 +--
1 file changed, 1 insertion(+), 22 deletions(-)
diff --git a/arch/arm/include/asm/barrier.h b/arch/arm/include/asm/barrier.h
generic version, drop that as well.
This is in preparation to refactoring this code area.
Note: nop() was in processor.h and not in barrier.h as on other
architectures. Nothing seems to depend on it being there though.
Signed-off-by: Michael S. Tsirkin
Acked-by: Arnd Bergmann
Acked-by: David S
Allow architectures to override smp_store_release
and smp_load_acquire by guarding the defines
in asm-generic/barrier.h with ifndef directives.
This is in preparation to reusing asm-generic/barrier.h
on architectures which have their own definition
of these macros.
Signed-off-by: Michael S
n drivers to use the virt_xxx APIs
compiled only (by intel 0-day infrastructure)
-. Patch 40 makes some smp barriers on s390 more efficient
included here to avoid merge conflicts, at maintainer's request
tested on x86
Davidlohr Bueso (1):
lcoking/barriers, arch: Use smp barrier
-by: Michael S. Tsirkin
Acked-by: Arnd Bergmann
---
arch/powerpc/include/asm/barrier.h | 9 ++---
1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/arch/powerpc/include/asm/barrier.h
b/arch/powerpc/include/asm/barrier.h
index a7af5fb..980ad0c 100644
--- a/arch/powerpc/include/asm
: Michael S. Tsirkin
Acked-by: Arnd Bergmann
---
arch/s390/include/asm/barrier.h | 10 ++
1 file changed, 2 insertions(+), 8 deletions(-)
diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h
index 7ffd0b1..c358c31 100644
--- a/arch/s390/include/asm/barrier.h
From: Davidlohr Bueso
With commit b92b8b35a2e ("locking/arch: Rename set_mb() to smp_store_mb()")
it was made clear that the context of this call (and thus set_mb)
is strictly for CPU ordering, as opposed to IO. As such all archs
should use the smp variant of mb(), respecting the semantics and
sa
asm-generic/barrier.h defines a nop() macro.
To be able to use this header on ia64, we shouldn't
call local functions/variables nop().
There's one instance where this breaks on ia64:
rename the function to iosapic_nop to avoid the conflict.
Signed-off-by: Michael S. Tsirkin
Acked-by:
On ia64 smp_rmb, smp_wmb, read_barrier_depends, smp_read_barrier_depends
and smp_store_mb() match the asm-generic variants exactly. Drop the
local definitions and pull in asm-generic/barrier.h instead.
This is in preparation to refactoring this code area.
Signed-off-by: Michael S. Tsirkin
Acked
Add virt_ barriers to list of barriers to check for
presence of a comment.
Signed-off-by: Michael S. Tsirkin
---
scripts/checkpatch.pl | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index a96adcb..5ca272b 100755
--- a/scripts
SMP-only barriers were missing in checkpatch.pl
Refactor code slightly to make adding more variants easier.
Signed-off-by: Michael S. Tsirkin
---
scripts/checkpatch.pl | 20 +++-
1 file changed, 19 insertions(+), 1 deletion(-)
diff --git a/scripts/checkpatch.pl b/scripts
a checkpatch test so it will trigger a warning.
Reported-by: Russell King
Signed-off-by: Michael S. Tsirkin
---
scripts/checkpatch.pl | 10 ++
1 file changed, 10 insertions(+)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 97b8b62..a96adcb 100755
--- a/scripts/checkpa
optional\s* before () in barriers
rewrite using qr{} instead of map
Michael S. Tsirkin (3):
checkpatch.pl: add missing memory barriers
checkpatch: check for __smp outside barrier.h
checkpatch: add virt barriers
scripts/checkpatch.pl | 31 ++-
1 file
On Mon, Jan 04, 2016 at 02:15:50PM -0800, Joe Perches wrote:
> On Mon, 2016-01-04 at 22:45 +0200, Michael S. Tsirkin wrote:
> > On Mon, Jan 04, 2016 at 08:07:40AM -0800, Joe Perches wrote:
> > > On Mon, 2016-01-04 at 13:36 +0200, Michael S. Tsirkin wrote:
> > > > SMP
On Mon, Jan 04, 2016 at 02:11:37PM -0800, Joe Perches wrote:
> On Mon, 2016-01-04 at 23:07 +0200, Michael S. Tsirkin wrote:
> > On Mon, Jan 04, 2016 at 08:47:53AM -0800, Joe Perches wrote:
> > > On Mon, 2016-01-04 at 13:37 +0200, Michael S. Tsirkin wrote:
> > > >
On Wed, Jan 06, 2016 at 09:51:52AM +0800, Boqun Feng wrote:
> On Tue, Jan 05, 2016 at 06:16:48PM +0200, Michael S. Tsirkin wrote:
> [snip]
> > > > > Another thing is that smp_lwsync() may have a third user(other than
> > > > > smp_load_acquire() and smp_store_r
On Tue, Jan 05, 2016 at 05:53:41PM +0800, Boqun Feng wrote:
> On Tue, Jan 05, 2016 at 10:51:17AM +0200, Michael S. Tsirkin wrote:
> > On Tue, Jan 05, 2016 at 09:36:55AM +0800, Boqun Feng wrote:
> > > Hi Michael,
> > >
> > > On Thu, Dec 31, 2015 at 09:07:
On Tue, Jan 05, 2016 at 04:39:37PM +0100, Christian Borntraeger wrote:
> On 01/05/2016 10:30 AM, Michael S. Tsirkin wrote:
>
> >
> > arch/s390/kernel/vdso.c:smp_mb();
> >
> > Looking at
> > Author: Christian Borntraeger
> >
On Mon, Jan 04, 2016 at 01:59:34PM +, Russell King - ARM Linux wrote:
> On Mon, Jan 04, 2016 at 02:54:20PM +0100, Peter Zijlstra wrote:
> > On Mon, Jan 04, 2016 at 02:36:58PM +0100, Peter Zijlstra wrote:
> > > On Sun, Jan 03, 2016 at 11:12:44AM +0200, Michael S. Tsirkin wro
On Tue, Jan 05, 2016 at 12:41:27PM +0100, Gerd Hoffmann wrote:
> Hi,
>
> We have some code in our tree to support pci passthrough of intel
> graphics devices (igd) on xen, which requires some chipset tweaks
> for (a) the host bridge and (b) the lpc/isa-bridge to meat the
> expectations of the gu
On Tue, Jan 05, 2016 at 01:08:52PM +0100, Martin Schwidefsky wrote:
> On Tue, 5 Jan 2016 11:30:19 +0200
> "Michael S. Tsirkin" wrote:
>
> > On Tue, Jan 05, 2016 at 09:13:19AM +0100, Martin Schwidefsky wrote:
> > > On Mon, 4 Jan 2016 22:18:58 +0200
On Tue, Jan 05, 2016 at 09:13:19AM +0100, Martin Schwidefsky wrote:
> On Mon, 4 Jan 2016 22:18:58 +0200
> "Michael S. Tsirkin" wrote:
>
> > On Mon, Jan 04, 2016 at 02:45:25PM +0100, Peter Zijlstra wrote:
> > > On Thu, Dec 31, 2015 at 09:08:38PM +0200, Mich
1 - 100 of 203 matches
Mail list logo
