On 25/04/2019 13:30, Juergen Gross wrote:
> On 25/04/2019 12:57, Ingo Molnar wrote:
>>
>> * Peter Zijlstra wrote:
>>
>>> On Thu, Apr 25, 2019 at 11:50:39AM +0200, Ingo Molnar wrote:
>>>>
>>>> * Peter Zijlstra wrote:
>>>>
On 01/02/2019 19:46, Boris Ostrovsky wrote:
> On 1/30/19 3:22 AM, Juergen Gross wrote:
>> Don't allow memory to be added above the allowed maximum allocation
>> limit set by Xen.
>>
>> Trying to do so would result in cases like the following:
>>
&g
; Followup patches are:
>
> - apply the result of semantic patch;
> - add FOPEN_STREAM to fs/fuse.
>
> Regarding semantic patch I've verified each generated change manually - that
> it is
> correct to convert - and each other nonseekable_open instance left - that
On 08/04/2019 12:36, Joao Martins wrote:
> On 4/8/19 7:44 AM, Juergen Gross wrote:
>> On 12/03/2019 18:14, Joao Martins wrote:
>>> On 2/22/19 4:59 PM, Paolo Bonzini wrote:
>>>> On 21/02/19 12:45, Joao Martins wrote:
>>>>> On 2/20/19 9:09 PM, Paolo
s
> - frame rates
> 2. Support basic camera controls:
> - contrast
> - brightness
> - hue
> - saturation
> 3. Support streaming control
>
> Signed-off-by: Oleksandr Andrushchenko
> Cc: Juergen Gross
> Cc: Konrad Rzeszutek Wilk
> Cc: Hans Verkuil
I'
On 09/04/2019 11:33, Oleksandr Andrushchenko wrote:
> On 4/9/19 12:28 PM, Juergen Gross wrote:
>> On 09/04/2019 11:15, Oleksandr Andrushchenko wrote:
>>> From: Oleksandr Andrushchenko
>>>
>>> This is the ABI for the two halves of a para-virtualized
>>
Linus,
Please git pull the following tag:
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git
for-linus-5.11-rc8-tag
xen: branch for v5.11-rc8
It contains a single fix for an issue introduced in 5.11: when running
as a Xen guest on Arm systems the kernel will hang during boot.
Thanks.
The if condition in irq_matrix_reserve() can be much simpler.
While at it fix a typo in the comment.
Signed-off-by: Juergen Gross
---
kernel/irq/matrix.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/kernel/irq/matrix.c b/kernel/irq/matrix.c
index 651a4ad6d711
control.
Patches 7 and 8 are minor fixes I had lying around.
Juergen Gross (8):
xen/events: reset affinity of 2-level event when tearing it down
xen/events: don't unmask an event channel when an eoi is pending
xen/events: avoid handling the same event on two cpus at the same time
xen/ne
set.
Reported-by: Julien Grall
Signed-off-by: Juergen Gross
---
V2:
- new patch
---
drivers/xen/events/events_base.c | 19 +++
1 file changed, 15 insertions(+), 4 deletions(-)
diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
index e157e750683
variables for rx/tx pending indicators in
order to split function calls and if condition.
Fixes: 23025393dbeb3b ("xen/netback: use lateeoi irq binding")
Signed-off-by: Juergen Gross
---
V2:
- new patch, fixing FreeBSD performance issue
---
drivers/net/xen-netback/interface.c | 8 +-
/unmasking and temporary masking. The event channel should only
be able to generate an interrupt if all flags are cleared.
Cc: sta...@vger.kernel.org
Fixes: 54c9de89895e0a36047 ("xen/events: add a new late EOI evtchn framework")
Reported-by: Julien Grall
Signed-off-by: Juergen Gross
-
: Julien Grall
Signed-off-by: Juergen Gross
---
V2:
- reset affinity when tearing down the event (Julien Grall)
---
drivers/xen/events/events_2l.c | 15 +++
drivers/xen/events/events_base.c | 1 +
drivers/xen/events/events_internal.h | 8
3 files changed, 24 insertions
id of the other side.
While at it remove the stale prototype of bind_evtchn_to_irq_lateeoi().
Signed-off-by: Juergen Gross
Reviewed-by: Boris Ostrovsky
Reviewed-by: Wei Liu
---
drivers/block/xen-blkback/xenbus.c | 2 +-
drivers/net/xen-netback/interface.c | 16 +--
drivers/xen/events
Add syfs nodes for each xenbus device showing event statistics (number
of events and spurious events, number of associated event channels)
and for setting a spurious event threshold in case a frontend is
sending too many events without being rogue on purpose.
Signed-off-by: Juergen Gross
---
V2
For avoiding read- and write-tearing by the compiler use READ_ONCE()
and WRITE_ONCE() for accessing the ring indices in evtchn.c.
Signed-off-by: Juergen Gross
---
V2:
- modify all accesses (Julien Grall)
---
drivers/xen/evtchn.c | 25 -
1 file changed, 16 insertions
The ring buffer for user events is local to the given kernel instance,
so smp barriers are fine for ensuring consistency.
Reported-by: Andrew Cooper
Signed-off-by: Juergen Gross
Reviewed-by: Jan Beulich
---
drivers/xen/evtchn.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff
variables for rx/tx pending indicators in
order to split function calls and if condition.
Cc: sta...@vger.kernel.org
Fixes: 23025393dbeb3b ("xen/netback: use lateeoi irq binding")
Signed-off-by: Juergen Gross
Reviewed-by: Jan Beulich
Reviewed-by: Paul Durrant
Reviewed-by: Wei Liu
---
: Julien Grall
Signed-off-by: Juergen Gross
Reviewed-by: Julien Grall
---
V2:
- reset affinity when tearing down the event (Julien Grall)
---
drivers/xen/events/events_2l.c | 15 +++
drivers/xen/events/events_base.c | 1 +
drivers/xen/events/events_internal.h | 8
3
control.
Patches 7 and 8 are minor fixes I had lying around.
Juergen Gross (8):
xen/events: reset affinity of 2-level event when tearing it down
xen/events: don't unmask an event channel when an eoi is pending
xen/events: avoid handling the same event on two cpus at the same time
xen/ne
t set.
Cc: sta...@vger.kernel.org
Reported-by: Julien Grall
Signed-off-by: Juergen Gross
---
V2:
- new patch
V3:
- use common helper for end of handler action (Julien Grall)
- move setting is_active to 0 for lateeoi (Boris Ostrovsky)
---
drivers/xen/events/events_base.c | 32
/unmasking and temporary masking. The event channel should only
be able to generate an interrupt if all flags are cleared.
Cc: sta...@vger.kernel.org
Fixes: 54c9de89895e0a36047 ("xen/events: add a new late EOI evtchn framework")
Reported-by: Julien Grall
Signed-off-by: Juergen Gross
-
id of the other side.
While at it remove the stale prototype of bind_evtchn_to_irq_lateeoi().
Signed-off-by: Juergen Gross
Reviewed-by: Boris Ostrovsky
Reviewed-by: Wei Liu
Reviewed-by: Paul Durrant
---
drivers/block/xen-blkback/xenbus.c | 2 +-
drivers/net/xen-netback/interface.c | 16
The ring buffer for user events is local to the given kernel instance,
so smp barriers are fine for ensuring consistency.
Reported-by: Andrew Cooper
Signed-off-by: Juergen Gross
Reviewed-by: Jan Beulich
---
drivers/xen/evtchn.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff
Add syfs nodes for each xenbus device showing event statistics (number
of events and spurious events, number of associated event channels)
and for setting a spurious event threshold in case a frontend is
sending too many events without being rogue on purpose.
Signed-off-by: Juergen Gross
For avoiding read- and write-tearing by the compiler use READ_ONCE()
and WRITE_ONCE() for accessing the ring indices in evtchn.c.
Signed-off-by: Juergen Gross
---
V2:
- modify all accesses (Julien Grall)
V3:
- fix incrementing producer index (Ross Lagerwall)
---
drivers/xen/evtchn.c | 25
uot;xen/netback: use lateeoi irq binding")
Cc: sta...@vger.kernel.org
Signed-off-by: Juergen Gross
---
drivers/net/xen-netback/rx.c | 9 -
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/net/xen-netback/rx.c b/drivers/net/xen-netback/rx.c
index b8febe1d1bfd..accc9
, but this option will have a larger impact on performance.
I hope that the "ext" setting will help to find the root cause of the
problem.
Juergen Gross (3):
kernel/smp: add boot parameter for controlling CSD lock debugging
kernel/smp: prepare more CSD lock debugging
kernel/smp: add
In order to be able to easily add more CSD lock debugging data to
struct call_function_data->csd move the call_single_data_t element
into a sub-structure.
Signed-off-by: Juergen Gross
---
kernel/smp.c | 16 ++--
1 file changed, 10 insertions(+), 6 deletions(-)
diff --git a/ker
rinted out when a hang is detected.
Signed-off-by: Juergen Gross
---
.../admin-guide/kernel-parameters.txt | 4 +
kernel/smp.c | 143 +-
2 files changed, 144 insertions(+), 3 deletions(-)
diff --git a/Documentation/admin-guide/kernel-parame
boot parameter for switching
the debug functionality on. This will reduce any performance impact
of the debug coding to a bare minimum when not being used.
Signed-off-by: Juergen Gross
---
.../admin-guide/kernel-parameters.txt | 6 +++
kernel/smp.c | 38
(+), 16 deletions(-)
Jan Beulich (1):
xen-front-pgdir-shbuf: don't record wrong grant handle upon error
Juergen Gross (3):
xen/events: add per-xenbus device event statistics and settings
xen/evtchn: use smp barriers for user event ring
xen/evtchn: use READ/WRITE_ONCE(
Linus,
Please git pull the following tag:
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git for-linus-5.9-rc1-tag
xen: branch for v5.9-rc1
It contains the following:
- two trivial comment fixes
- A small series for the Xen balloon driver fixing some issues
- A series of the Xen privcm
There are some code parts using CONFIG_PARAVIRT for Xen pvops related
issues instead of the more stringent CONFIG_PARAVIRT_XXL.
Signed-off-by: Juergen Gross
---
arch/x86/entry/entry_64.S| 4 ++--
arch/x86/include/asm/fixmap.h| 2 +-
arch/x86/include/asm/required
The last 32-bit user of stuff under CONFIG_PARAVIRT_XXL is gone.
Remove 32-bit specific parts.
Signed-off-by: Juergen Gross
---
arch/x86/entry/vdso/vdso32/vclock_gettime.c | 1 +
arch/x86/include/asm/paravirt.h | 92 +++--
arch/x86/include/asm/paravirt_types.h
With 32-bit Xen PV support gone commit a4c0e91d1d65bc58
("x86/entry/32: Fix XEN_PV build dependency") can be reverted again.
Signed-off-by: Juergen Gross
---
arch/x86/include/asm/idtentry.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/id
With support for 32-bit pv guests gone pure pv-code no longer needs to
test for highmem. Dropping those tests removes the need for flushing
in some places.
Signed-off-by: Juergen Gross
---
arch/x86/xen/enlighten_pv.c | 11 ++-
arch/x86/xen/mmu_pv.c | 138
support from the kernel.
Signed-off-by: Juergen Gross
---
arch/x86/entry/entry_32.S | 109 +
arch/x86/entry/vdso/vdso32/note.S | 30 ---
arch/x86/include/asm/proto.h | 2 +-
arch/x86/include/asm/segment.h| 2 +-
arch/x86/kernel/head_32.S | 31 ---
arch/x86/xen
With 32-bit pv-guest support removed xen-asm_64.S can be merged with
xen-asm.S
Signed-off-by: Juergen Gross
---
arch/x86/xen/Makefile | 3 +-
arch/x86/xen/xen-asm.S| 179 +++
arch/x86/xen/xen-asm_64.S | 192 --
3
Changes in V2:
- rebase to 5.8 kernel
- addressed comments to V1
- new patches 3 and 4
Juergen Gross (7):
x86/xen: remove 32-bit Xen PV guest support
x86/xen: eliminate xen-asm_64.S
x86/xen: drop tests for highmem in pv code
x86/paravirt: remove 32-bit support from PARAVIRT_XXL
x86
Some paravirt macros are no longer used, delete them.
Signed-off-by: Juergen Gross
---
arch/x86/include/asm/paravirt.h | 15 ---
1 file changed, 15 deletions(-)
diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h
index dedc89a07826..99da08852df0 100644
+++---
drivers/xen/xen-scsiback.c | 60 --
include/xen/grant_table.h | 17 +
7 files changed, 182 insertions(+), 137 deletions(-)
Juergen Gross (2):
xen: add helpers for caching grant mapping pages
xen: don't use page->lru for ZONE_DEVICE memory
Fix an issue found in dom0 when running on a host with NVMe.
Juergen Gross (2):
xen: add helpers for caching grant mapping pages
xen: don't use page->lru for ZONE_DEVICE memory
drivers/block/xen-blkback/blkback.c | 89
drivers/block/xen-blkback/common.
instead.
Fixes: 9e2369c06c8a18 ("xen: add helpers to allocate unpopulated memory")
Signed-off-by: Juergen Gross
---
drivers/xen/grant-table.c | 65 +
drivers/xen/unpopulated-alloc.c | 20 +-
include/xen/grant_table.h | 4 ++
3 files cha
Instead of having similar helpers in multiple backend drivers use
common helpers for caching pages allocated via gnttab_alloc_pages().
Make use of those helpers in blkback and scsiback.
Signed-off-by: Juergen Gross
---
drivers/block/xen-blkback/blkback.c | 89
(-)
Jan Beulich (2):
Xen/gnttab: handle p2m update errors on a per-slot basis
xen-netback: respect gnttab_map_refs()'s return value
Juergen Gross (1):
xen: fix p2m size in dom0 for disabled memory hotplug case
Linus,
Please git pull the following tag:
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git
for-linus-5.12b-rc6-tag
xen: branch for v5.12-rc6
It contains one Xen related security fix (XSA-371).
Thanks.
Juergen
drivers/block/xen-blkback/blkback.c | 2 +-
1 file changed, 1 insertion
] state
drivers/xen/xen-pciback/pci_stub.c:973:31:got int
Signed-off-by: Muhammad Usama Anjum
Reviewed-by: Juergen Gross
Juergen
OpenPGP_0xB0DE9DD628BF132F.asc
Description: application/pgp-keys
OpenPGP_signature
Description: OpenPGP digital signature
Linus,
Please git pull the following tag:
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git
for-linus-5.12b-rc5-tag
xen: branch for v5.12-rc5
It contains a small series with a more elegant fix of a problem which
was originally fixed in rc2.
Thanks.
Juergen
arch/x86/include/asm/xen
On 12.04.21 03:04, Yunsheng Lin wrote:
On 2021/4/9 13:31, Juergen Gross wrote:
On 25.03.21 04:13, Yunsheng Lin wrote:
Lockless qdisc has below concurrent problem:
cpu0 cpu1
. .
q->enqu
On 12.04.21 10:26, Christoph Hellwig wrote:
On Mon, Apr 12, 2021 at 10:00:14AM +0200, Peter Zijlstra wrote:
Instead of relying on apply_to_page_range() being available to
modules, move its use into core kernel code and export it's
application.
This doesn't exactly look great, but at least it c
On 13.04.21 11:03, Yunsheng Lin wrote:
On 2021/4/13 16:33, Hillf Danton wrote:
On Tue, 13 Apr 2021 15:57:29 Yunsheng Lin wrote:
On 2021/4/13 15:12, Hillf Danton wrote:
On Tue, 13 Apr 2021 11:34:27 Yunsheng Lin wrote:
On 2021/4/13 11:26, Hillf Danton wrote:
On Tue, 13 Apr 2021 10:56:42 Yunsh
On 06.04.21 09:06, Michal Kubecek wrote:
On Tue, Apr 06, 2021 at 08:55:41AM +0800, Yunsheng Lin wrote:
Hi, Jiri
Do you have a reproducer that can be shared here?
With reproducer, I can debug and test it myself too.
I'm afraid we are not aware of a simple reproducer. As mentioned in the
origin
On 30.03.21 19:33, Paul E. McKenney wrote:
On Wed, Mar 24, 2021 at 11:18:03AM +0100, Jürgen Groß wrote:
On 02.03.21 07:28, Juergen Gross wrote:
In order to help identifying problems with IPI handling and remote
function execution add some more data to IPI debugging code.
There have been
Linus,
Please git pull the following tag:
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git
for-linus-5.12b-rc7-tag
xen: branch for v5.12-rc7
It contains a single fix of a 5.12 patch for the rather uncommon problem of
running as a Xen guest with a real time kernel config.
Thanks.
J
On 02.04.21 18:11, Paul E. McKenney wrote:
On Fri, Apr 02, 2021 at 05:46:52PM +0200, Juergen Gross wrote:
On 30.03.21 19:33, Paul E. McKenney wrote:
On Wed, Mar 24, 2021 at 11:18:03AM +0100, Jürgen Groß wrote:
On 02.03.21 07:28, Juergen Gross wrote:
In order to help identifying problems with
In case a process waits for any Xenstore action in the xenbus driver
it should be interruptible via SIGKILL.
Signed-off-by: Juergen Gross
---
drivers/xen/xenbus/xenbus_xs.c | 9 -
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/xen/xenbus/xenbus_xs.c b/drivers/xen
Linus,
Please git pull the following tag:
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git
for-linus-5.10b-rc5-tag
xen: branch for v5.10-rc5
It contains a single fix for avoiding WARN splats when booting a Xen
guest with nosmt.
Thanks.
Juergen
arch/x86/xen/spinlock.c | 12 +++
ested-by: Andy Lutomirski
Signed-off-by: Juergen Gross
---
arch/x86/include/asm/irqflags.h | 20 ++-
arch/x86/include/asm/paravirt.h | 5 -
arch/x86/include/asm/paravirt_types.h | 7 ++-
arch/x86/kernel/irqflags.S| 11 ---
arch/x86/kernel/p
file disentangling.
Note that an updated objtool is needed for this series, as otherwise
lots of warnings due to alternative instructions modifying the stack
will be issued during the build.
Changes in V2:
- added patches 5-12
Juergen Gross (12):
x86/xen: use specific Xen pv interrupt entry for
in the kernel more than compensate for
this drop (a kernel build in a Xen PV guest was slightly faster with
this patch applied).
While at it remove the stale sysret32 remnants.
Signed-off-by: Juergen Gross
Acked-by: Andy Lutomirski
Acked-by: Peter Zijlstra (Intel)
---
arch/x86/entry/entry_64
code only, so it can just be
replaced by cli.
INTERRUPT_RETURN in 32-bit code can be replaced by iret.
GET_CR2_INTO_AX and ENABLE_INTERRUPTS are used nowhere, so they can
be removed.
Signed-off-by: Juergen Gross
---
arch/x86/entry/entry_32.S | 4 +-
arch/x86/include/asm/irqflags.h
patching later.
Make sure paravirt patching is performed before alternative patching.
Signed-off-by: Juergen Gross
---
arch/x86/include/asm/cpufeatures.h | 3 +++
arch/x86/kernel/alternative.c | 28 ++--
2 files changed, 29 insertions(+), 2 deletions(-)
diff --git
There is no need any longer to have different paravirt patch functions
for native and Xen. Eliminate native_patch() and rename
paravirt_patch_default() to paravirt_patch().
Signed-off-by: Juergen Gross
---
arch/x86/include/asm/paravirt_types.h | 19 +--
arch/x86/kernel/Makefile
Instead of using paravirt patching for custom code sequences add
support for using ALTERNATIVE handling combined with paravirt call
patching.
Signed-off-by: Juergen Gross
---
arch/x86/include/asm/paravirt_types.h | 62 +++
1 file changed, 62 insertions(+)
diff --git a
Xen PV guests don't use IST. For double fault interrupts switch to
the same model as NMI.
Correct a typo in a comment while copying it.
Signed-off-by: Juergen Gross
Acked-by: Peter Zijlstra (Intel)
---
V2:
- fix typo (Andy Lutomirski)
---
arch/x86/include/asm/idtentry.h | 3 +++
arch/x8
out the time interfaces
into a new header file.
Signed-off-by: Juergen Gross
---
arch/x86/Kconfig | 1 +
arch/x86/include/asm/mshyperv.h | 11
arch/x86/include/asm/paravirt.h | 14 --
arch/x86/include/asm/paravirt_time.h | 38
Xen PV guests don't use IST. For machine check interrupts switch to
the same model as debug interrupts.
Signed-off-by: Juergen Gross
Acked-by: Peter Zijlstra (Intel)
---
arch/x86/include/asm/idtentry.h | 3 +++
arch/x86/xen/enlighten_pv.c | 16 +++-
arch/x86/xen/xen-
are never executed in a Xen PV guest. Replace those with the
plain swapgs instruction. For SWAPGS_UNSAFE_STACK the same applies.
Signed-off-by: Juergen Gross
Acked-by: Andy Lutomirski
Acked-by: Peter Zijlstra (Intel)
---
arch/x86/entry/entry_64.S | 10 +-
arch/x86/include/asm
: Juergen Gross
---
arch/x86/include/asm/paravirt.h | 73 ++
arch/x86/include/asm/paravirt_types.h | 1 -
arch/x86/kernel/paravirt.c| 16 ++---
arch/x86/kernel/paravirt_patch.c | 88 ---
4 files changed, 54 insertions(+), 124 deletions
The iret paravirt op is rather special as it is using a jmp instead
of a call instruction. Switch it to ALTERNATIVE.
Signed-off-by: Juergen Gross
---
arch/x86/include/asm/paravirt.h | 7 ---
arch/x86/include/asm/paravirt_types.h | 5 +
arch/x86/kernel/asm-offsets.c | 5
file disentangling.
Changes in V3:
- added patches 7 and 12
- addressed all comments
Changes in V2:
- added patches 5-12
Juergen Gross (14):
x86/xen: use specific Xen pv interrupt entry for MCE
x86/xen: use specific Xen pv interrupt entry for DF
x86/pv: switch SWAPGS to ALTERNATIVE
x86/xen
are never executed in a Xen PV guest. Replace those with the
plain swapgs instruction. For SWAPGS_UNSAFE_STACK the same applies.
Signed-off-by: Juergen Gross
Acked-by: Andy Lutomirski
Acked-by: Peter Zijlstra (Intel)
Reviewed-by: Borislav Petkov
Reviewed-by: Thomas Gleixner
---
arch/x86/entry
Xen PV guests don't use IST. For double fault interrupts switch to
the same model as NMI.
Correct a typo in a comment while copying it.
Signed-off-by: Juergen Gross
Acked-by: Peter Zijlstra (Intel)
Reviewed-by: Thomas Gleixner
---
V2:
- fix typo (Andy Lutomirski)
---
arch/x86/includ
Xen PV guests don't use IST. For machine check interrupts switch to
the same model as debug interrupts.
Signed-off-by: Juergen Gross
Acked-by: Peter Zijlstra (Intel)
Reviewed-by: Thomas Gleixner
---
arch/x86/include/asm/idtentry.h | 3 +++
arch/x86/xen/enlighten_pv.c
Instead of using paravirt patching for custom code sequences add
support for using ALTERNATIVE handling combined with paravirt call
patching.
Signed-off-by: Juergen Gross
---
V3:
- drop PVOP_ALT_VCALL() macro
---
arch/x86/include/asm/paravirt_types.h | 49 +++
1 file
TIVE_TERNARY "default_instr", FEATURE_NR,
"feature_on_instr", "feature_off_instr"
which will start with "default_instr" and at patch time will, depending
on FEATURE_NR being set or not, patch that with either
"feature_on_instr" or "f
)PVOP_CALL(long, ...).
Note that it isn't easily possible to just redefine PVOP_VCALL()
to use PVOP_CALL() instead, as this would require further hiding of
commas in macro parameters.
Signed-off-by: Juergen Gross
---
V3:
- new patch
---
arch/x86/include/asm/paravirt_types.h
There is no need any longer to have different paravirt patch functions
for native and Xen. Eliminate native_patch() and rename
paravirt_patch_default() to paravirt_patch().
Signed-off-by: Juergen Gross
---
V3:
- remove paravirt_patch_insns() (kernel test robot)
---
arch/x86/include/asm
d in objtool for the following patches
of the series.
Signed-off-by: Juergen Gross
---
tools/objtool/check.c | 180
tools/objtool/check.h | 5 ++
tools/objtool/orc_gen.c | 178 +--
3 files changed, 289 insert
patching later.
Make sure paravirt patching is performed before alternative patching.
Signed-off-by: Juergen Gross
---
V3:
- add comment (Boris Petkov)
- no negative features (Boris Petkov)
---
arch/x86/include/asm/cpufeatures.h | 2 ++
arch/x86/kernel/alternative.c | 40
in the kernel more than compensate for
this drop (a kernel build in a Xen PV guest was slightly faster with
this patch applied).
While at it remove the stale sysret32 remnants.
Signed-off-by: Juergen Gross
---
V3:
- simplify ALTERNATIVE (Boris Petkov)
---
arch/x86/entry/entry_64.S
out the time interfaces
into a new header file.
Signed-off-by: Juergen Gross
---
arch/x86/Kconfig | 1 +
arch/x86/include/asm/mshyperv.h | 11
arch/x86/include/asm/paravirt.h | 14 --
arch/x86/include/asm/paravirt_time.h | 38
ested-by: Andy Lutomirski
Signed-off-by: Juergen Gross
---
arch/x86/include/asm/irqflags.h | 20 ++-
arch/x86/include/asm/paravirt.h | 5 -
arch/x86/include/asm/paravirt_types.h | 7 ++-
arch/x86/kernel/irqflags.S| 11 ---
arch/x86/kernel/p
: Juergen Gross
---
arch/x86/include/asm/paravirt.h | 72 ++
arch/x86/include/asm/paravirt_types.h | 1 -
arch/x86/kernel/paravirt.c| 16 ++---
arch/x86/kernel/paravirt_patch.c | 88 ---
4 files changed, 53 insertions(+), 124 deletions
code only, so it can just be
replaced by cli.
INTERRUPT_RETURN in 32-bit code can be replaced by iret.
ENABLE_INTERRUPTS is used nowhere, so it can be removed.
Signed-off-by: Juergen Gross
---
arch/x86/entry/entry_32.S | 4 +-
arch/x86/include/asm/irqflags.h | 5 --
arch/x
The iret paravirt op is rather special as it is using a jmp instead
of a call instruction. Switch it to ALTERNATIVE.
Signed-off-by: Juergen Gross
---
V3:
- use ALTERNATIVE_TERNARY
---
arch/x86/include/asm/paravirt.h | 6 +++---
arch/x86/include/asm/paravirt_types.h | 5 +
arch/x86
Linus,
Please git pull the following tag:
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git
for-linus-5.11-rc1b-tag
xen: branch for v5.11-rc1
It contains some minor cleanup patches and a small series disentangling some Xen
related Kconfig options.
Thanks.
Juergen
arch/x86/include/
, but this option will have a larger impact on performance.
I hope that the "ext" setting will help to find the root cause of the
problem.
Juergen Gross (3):
kernel/smp: add boot parameter for controlling CSD lock debugging
kernel/smp: prepare more CSD lock debugging
kernel/smp: add
the related events just before those (for adding data needed to
identify a possible race). Printing all available data would be
possible, but this would add large amounts of data printed on larger
configurations.
Signed-off-by: Juergen Gross
Tested-by: Paul E. McKenney
---
V2:
- add automati
boot parameter for switching
the debug functionality on. This will reduce any performance impact
of the debug coding to a bare minimum when not being used.
Signed-off-by: Juergen Gross
---
.../admin-guide/kernel-parameters.txt | 6 +++
kernel/smp.c | 38
In order to be able to easily add more CSD lock debugging data to
struct call_function_data->csd move the call_single_data_t element
into a sub-structure.
Signed-off-by: Juergen Gross
---
kernel/smp.c | 16 ++--
1 file changed, 10 insertions(+), 6 deletions(-)
diff --git a/ker
e k{,un}map_ops[]
Xen/gnttab: introduce common INVALID_GRANT_{HANDLE,REF}
Xen/gntdev: don't needlessly use kvcalloc()
Juergen Gross (3):
xen/events: reset affinity of 2-level event when tearing it down
xen/events: don't unmask an event channel when an eoi is pending
x
code only, so it can just be
replaced by cli.
INTERRUPT_RETURN in 32-bit code can be replaced by iret.
ENABLE_INTERRUPTS is used nowhere, so it can be removed.
Signed-off-by: Juergen Gross
---
arch/x86/entry/entry_32.S | 4 +-
arch/x86/include/asm/irqflags.h | 5 --
arch/x
in the kernel more than compensate for
this drop (a kernel build in a Xen PV guest was slightly faster with
this patch applied).
While at it remove the stale sysret32 remnants.
Signed-off-by: Juergen Gross
---
V3:
- simplify ALTERNATIVE (Boris Petkov)
---
arch/x86/entry/entry_64.S
patching later.
Make sure paravirt patching is performed before alternative patching.
Signed-off-by: Juergen Gross
---
V3:
- add comment (Boris Petkov)
- no negative features (Boris Petkov)
V4:
- move paravirt_set_cap() to paravirt-spinlocks.c
---
arch/x86/include/asm/cpufeatures.h | 2
register defines for assembler paravirt calling, as there
isn't much usage left.
Signed-off-by: Juergen Gross
---
V4:
- fixed SAVE_FLAGS() (kernel test robot)
- added assembler paravirt cleanup
---
arch/x86/entry/entry_64.S | 2 +-
arch/x86/include/asm/irqflags.h | 2 +-
arc
)PVOP_CALL(long, ...).
Note that it isn't easily possible to just redefine PVOP_VCALL()
to use PVOP_CALL() instead, as this would require further hiding of
commas in macro parameters.
Signed-off-by: Juergen Gross
---
V3:
- new patch
V4:
- fix build warnings with clang (kernel test
The iret paravirt op is rather special as it is using a jmp instead
of a call instruction. Switch it to ALTERNATIVE.
Signed-off-by: Juergen Gross
---
V3:
- use ALTERNATIVE_TERNARY
---
arch/x86/include/asm/paravirt.h | 6 +++---
arch/x86/include/asm/paravirt_types.h | 5 +
arch/x86
There is no need any longer to have different paravirt patch functions
for native and Xen. Eliminate native_patch() and rename
paravirt_patch_default() to paravirt_patch().
Signed-off-by: Juergen Gross
---
V3:
- remove paravirt_patch_insns() (kernel test robot)
---
arch/x86/include/asm
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