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From: David Vrabel <david.vrabel@citrix.com> get_balloon_scratch_page() disables preemption so we cannot call alloc_page() in between get/put_balloon_scratch_page(). Shuffle bits around in decrease_reservation() to avoid this. Signed-off-by: David Vrabel <david.vrabel@citrix.com> --- drivers/xen/ballo...

From: David Vrabel <david.vrabel@citrix.com> Instead of passing multiple bools to timekeeping_updated(), define flags and use a single ''action'' parameter. It is then more obvious what each timekeeping_update() call does. Signed-off-by: David Vrabel <david.vrabel@citrix.com> --- kerne...

From: David Vrabel <david.vrabel@citrix.com> The high resolution timer code gets notified of step changes to the system time with clock_was_set() or clock_was_set_delayed() calls. If other parts of the kernel require similar notification there is no clear place to hook into. Add a clock_was_set atomic notifi...

...mit f62805f1 introduced a bug where lazy MMU mode isn''t exited if a m2p_add/remove_override call fails. Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Anthony Liguori <aliguori@amazon.com> Cc: xen-devel@lists.xenproject.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Matt Wilson <msw@amazon.com> --- drivers/xen/grant-table.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff -...

From: David Vrabel <david.vrabel@citrix.com> autoballoon=1 is not recommened if dom0_mem was used to reduce the amount of dom0 memory. Instead of requiring users to change xl.conf if they do this, extend the autoballoon option with a new choice: "auto". With autoballoon="auto", autoballoo...

Some old Windows frontends fail to transition through the xenbus Closing state and move directly from Connected to Closed. Handle this case properly. Signed-off-by: Paul Durrant <paul.durrant@citrix.com> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Wei Liu <wei.liu2@citrix.com> Cc: Ian Campbell <ian.campbell@citrix.com> --- drivers/net/xen-netback/xenbus.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c index a53782e.....

This series of patches makes Xen pass a (somewhat) valid device tree to dom0. The device tree for dom0 is the same as the one supplied to Xen except the memory and chosen nodes are adjusted appropriately. We don''t yet make use of the device tree to map MMIO regions or setup interrupts for the guest and we still include the UART used for Xen''s console. Note that loading Linux

...hat Windows seems to send IPv6 packets with a fragment header even if they are not a fragment - i.e. offset is zero, and M bit is not set). Signed-off-by: Paul Durrant <paul.durrant@citrix.com> Cc: Wei Liu <wei.liu2@citrix.com> Cc: Ian Campbell <ian.campbell@citrix.com> Cc: David Vrabel <david.vrabel@citrix.com> --- drivers/net/xen-netback/netback.c | 31 ++++++++++++++++++++++++++++--- 1 file changed, 28 insertions(+), 3 deletions(-) diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c index 919b650..eea7ff2 100644 --- a/drivers/net/xen-net...

Enables numa if vnuma topology hypercall is supported and it is domU. Signed-off-by: Elena Ufimtseva <ufimtseva@gmail.com> --- arch/x86/xen/setup.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c index 68c054f..0aab799 100644 --- a/arch/x86/xen/setup.c +++ b/arch/x86/xen/setup.c @@ -20,6 +20,7 @@ #include

Hi, when creating a bigger (> 50 GB) HVM guest with maxmem > memory we get softlockups from time to time. kernel: [ 802.084335] BUG: soft lockup - CPU#1 stuck for 22s! [xend:31351] I tracked this down to the call of xc_domain_set_pod_target() and further p2m_pod_set_mem_target(). Unfortunately I can this check only with xen-4.2.2 as I don''t have a machine with enough memory for

...) == lock && > - ACCESS_ONCE(w->want) == next) { > + if (READ_ONCE(w->lock) == lock && > + READ_ONCE(w->want) == next) { > add_stats(RELEASED_SLOW_KICKED, 1); > xen_send_IPI_one(cpu, XEN_SPIN_UNLOCK_VECTOR); > break; Acked-by: David Vrabel <david.vrabel at citrix.com> Although some of the ACCESS_ONCE to READ_ONCE changes are cosmetic and are perhaps best left out of a patch destined for stable. David

...) == lock && > - ACCESS_ONCE(w->want) == next) { > + if (READ_ONCE(w->lock) == lock && > + READ_ONCE(w->want) == next) { > add_stats(RELEASED_SLOW_KICKED, 1); > xen_send_IPI_one(cpu, XEN_SPIN_UNLOCK_VECTOR); > break; Acked-by: David Vrabel <david.vrabel at citrix.com> Although some of the ACCESS_ONCE to READ_ONCE changes are cosmetic and are perhaps best left out of a patch destined for stable. David

...4-i386-rhel6hvm-intel 8 guest-saverestore fail in 8104 like 8011 version targeted for testing: xen 1c7b601b1b35 baseline version: xen edd38c84877e ------------------------------------------------------------ People who touched revisions under test: David Vrabel <david.vrabel@citrix.com> Ian Campbell <ian.campbell@citrix.com> Jan Beulich <jbeulich@novell.com> KUWAMURA Shin''ya <kuwa@jp.fujitsu.com> ------------------------------------------------------------ jobs: build-amd64...

On Tue, Mar 3, 2015 at 2:06 AM, David Vrabel <david.vrabel at citrix.com> wrote: > On 03/03/15 09:40, Luis R. Rodriguez wrote: >> Andrey, >> >> I believe that on Xen we should disable kasan, would like confirmation > > Why? This is the first of heard of this. Andrey chimed in here confirming this. >>...

On Tue, Mar 3, 2015 at 2:06 AM, David Vrabel <david.vrabel at citrix.com> wrote: > On 03/03/15 09:40, Luis R. Rodriguez wrote: >> Andrey, >> >> I believe that on Xen we should disable kasan, would like confirmation > > Why? This is the first of heard of this. Andrey chimed in here confirming this. >>...

On 27/02/14 13:11, Paolo Bonzini wrote: > Il 27/02/2014 13:11, David Vrabel ha scritto: >>> > This patch adds para-virtualization support to the queue spinlock code >>> > by enabling the queue head to kick the lock holder CPU, if known, >>> > in when the lock isn't released for a certain amount of time. It >>> > also enab...

On 27/02/14 13:11, Paolo Bonzini wrote: > Il 27/02/2014 13:11, David Vrabel ha scritto: >>> > This patch adds para-virtualization support to the queue spinlock code >>> > by enabling the queue head to kick the lock holder CPU, if known, >>> > in when the lock isn't released for a certain amount of time. It >>> > also enab...

From: David Vrabel <david.vrabel@citrix.com> elf_rel_set_symbol() fails if the symbol is in the .bss section. Signed-off-by: David Vrabel <david.vrabel@citrix.com> --- purgatory/arch/i386/console-x86.c | 6 +++--- purgatory/arch/i386/crashdump_backup.c | 8 +++++--- purgatory/arch/x86_64...

...sha Levin <sasha.levin at oracle.com> > > Suggested-by: Linus Torvalds <torvalds at linux-foundation.org> > > Signed-off-by: Raghavendra K T <raghavendra.kt at linux.vnet.ibm.com> > > Reviewed-by: Oleg Nesterov <oleg at redhat.com> > > Acked-by: David Vrabel <david.vrabel at citrix.com> > > --- > > arch/x86/include/asm/spinlock.h | 94 ++++++++++++++++++++--------------------- > > arch/x86/kernel/kvm.c | 7 ++- > > arch/x86/xen/spinlock.c | 7 ++- > > 3 files changed, 58 insertions(+), 50 deletio...

...sha Levin <sasha.levin at oracle.com> > > Suggested-by: Linus Torvalds <torvalds at linux-foundation.org> > > Signed-off-by: Raghavendra K T <raghavendra.kt at linux.vnet.ibm.com> > > Reviewed-by: Oleg Nesterov <oleg at redhat.com> > > Acked-by: David Vrabel <david.vrabel at citrix.com> > > --- > > arch/x86/include/asm/spinlock.h | 94 ++++++++++++++++++++--------------------- > > arch/x86/kernel/kvm.c | 7 ++- > > arch/x86/xen/spinlock.c | 7 ++- > > 3 files changed, 58 insertions(+), 50 deletio...