to proceed with the removal.
Tested with 'dd if=/dev/zero of=/dev/hvc1' while telling Qemu to remove
the console device.
Signed-off-by: David Woodhouse
Cc: sta...@vger.kernel.org
Reviewed-by: Juergen Gross
Juergen
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Reviewed-by: Juergen Gross
Juergen
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no need for it to be done with the lock
held.
Fixes: b536b4b96230 ('xen: use the hvc console infrastructure for Xen console')
Signed-off-by: Roger Pau Monné
Reviewed-by: Juergen Gross
Juergen
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On 30.11.22 17:36, Roger Pau Monne wrote:
The currently lockless access to the xen console list in
vtermno_to_xencons() is incorrect, as additions and removals from the
list can happen anytime, and as such the traversal of the list to get
the private console data for a given termno needs to
bus based drivers.
Signed-off-by: Dawei Li
Acked-by: Juergen Gross
Juergen
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: call to
HYPERVISOR_sched_op.constprop.0() leaves .noinstr.text section
Signed-off-by: Peter Zijlstra (Intel)
Reviewed-by: Srivatsa S. Bhat (VMware)
Reviewed-by: Juergen Gross
Juergen
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On 22.10.21 09:24, Jan Beulich wrote:
On 22.10.2021 08:47, Juergen Gross wrote:
Today the non-essential pv devices are hard coded in the xenbus driver
and this list is lacking multiple entries.
This series reworks the detection logic of non-essential devices by
adding a flag for that purpose
Today the non-essential pv devices are hard coded in the xenbus driver
and this list is lacking multiple entries.
This series reworks the detection logic of non-essential devices by
adding a flag for that purpose to struct xenbus_driver.
Juergen Gross (5):
xen: add "not_essential&
The Xen pv console driver is not essential for boot. Set the respective
flag.
Signed-off-by: Juergen Gross
---
drivers/tty/hvc/hvc_xen.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c
index f0bf01ea069a..71e0dd2c0ce5 100644
On 07.09.21 12:10, Jan Beulich wrote:
xenboot_write_console() is dealing with these quite fine so I don't see
why xenboot_console_setup() would return -ENOENT in this case.
Adjust documentation accordingly.
Signed-off-by: Jan Beulich
Reviewed-by: Juergen Gross
Juergen
from the function when the first
domU_write_console() failed - later ones aren't going to succeed.
Signed-off-by: Jan Beulich
Reviewed-by: Juergen Gross
Juergen
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);
void memblock_free(void *ptr, size_t size);
Replace intermediate memblock_free_ptr() with memblock_free() and drop
unnecessary aliases memblock_free_early() and memblock_free_early_nid().
Suggested-by: Linus Torvalds
Signed-off-by: Mike Rapoport
arch/x86/xen/ parts: Reviewed-by: Juergen
-by: Juergen Gross
Juergen
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Revert commit 76b4f357d0e7d8f6f00 which was based on wrong reasoning
and rename KVM_MAX_VCPU_ID to KVM_MAX_VCPU_IDS in order to avoid the
same issue in future.
Juergen Gross (2):
x86/kvm: revert commit 76b4f357d0e7d8f6f00
kvm: rename KVM_MAX_VCPU_ID to KVM_MAX_VCPU_IDS
Documentation/virt
KVM_MAX_VCPU_ID is not specifying the highest allowed vcpu-id, but the
number of allowed vcpu-ids. This has already led to confusion, so
rename KVM_MAX_VCPU_ID to KVM_MAX_VCPU_IDS to make its semantics more
clear
Suggested-by: Eduardo Habkost
Signed-off-by: Juergen Gross
---
Documentation/virt
On 07.07.21 11:57, Jan Beulich wrote:
On 07.07.2021 11:10, Juergen Gross wrote:
Xen frontends shouldn't BUG() in case of illegal data received from
their backends. So replace the BUG_ON()s when reading illegal data from
the ring page with negative return values.
Signed-off-by: Juergen Gross
Xen frontends shouldn't BUG() in case of illegal data received from
their backends. So replace the BUG_ON()s when reading illegal data from
the ring page with negative return values.
Signed-off-by: Juergen Gross
---
V2:
- drop BUG_ON() (Christophe Leroy, Greg Kroah-Hartmann)
- replace WARN_ONCE
wrong expectations for driver authors.
Signed-off-by: Uwe Kleine-König
Xen-bits:
Acked-by: Juergen Gross
Juergen
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.
It was discussed to handle this as a security problem, but the topic
was discussed in public before, so it isn't a real secret.
Juergen Gross (8):
xen: sync include/xen/interface/io/ring.h with Xen's newest version
xen/blkfront: read response from backend only once
xen/blkfront: don't take local copy
On 13.05.21 12:25, Greg Kroah-Hartman wrote:
On Thu, May 13, 2021 at 12:03:02PM +0200, Juergen Gross wrote:
Xen frontends shouldn't BUG() in case of illegal data received from
their backends. So replace the BUG_ON()s when reading illegal data from
the ring page with negative return values
On 13.05.21 12:16, Christophe Leroy wrote:
Le 13/05/2021 à 12:03, Juergen Gross a écrit :
Xen frontends shouldn't BUG() in case of illegal data received from
their backends. So replace the BUG_ON()s when reading illegal data from
the ring page with negative return values.
Signed-off
Xen frontends shouldn't BUG() in case of illegal data received from
their backends. So replace the BUG_ON()s when reading illegal data from
the ring page with negative return values.
Signed-off-by: Juergen Gross
---
drivers/tty/hvc/hvc_xen.c | 15 +--
1 file changed, 13 insertions
u bytes align=0x%lx\n", __func__,
> size, align);
>
> Signed-off-by: Mike Rapoport
For the Xen part:
Reviewed-by: Juergen Gross
Juergen
artup_entry():
> - start_secondary()
> - cpu_bringup_and_idle()
>
> start_secondary() already calls boot_init_stack_canary().
>
> This patch adds the call to boot_init_stack_canary() in
> cpu_bringup_and_idle() and removes it from cpu_startup_entry()
>
> Signed-off-by: Christophe
On 21/10/16 14:05, Peter Zijlstra wrote:
> On Fri, Oct 21, 2016 at 01:58:55PM +0200, Christian Borntraeger wrote:
>> stop_machine can take a very long time if the hypervisor does
>> overcommitment for guest CPUs. When waiting for "the one", lets
>> give up our CPU by using the new cpu_relax_yield.
Corrected xen-devel mailing list address, added other Xen maintainers
On 20/10/16 23:27, Pan Xinhui wrote:
> From: Juergen Gross <jgr...@suse.com>
>
> Support the vcpu_is_preempted() functionality under Xen. This will
> enhance lock performance on overcommitted hosts (more run
3.0 lps | 10419979.0 lps
>
> Pan Xinhui (5):
> kernel/sched: introduce vcpu preempted check interface
> locking/osq: Drop the overload of osq_lock()
> kernel/locking: Drop the overload of {mutex,rwsem}_spin_on_owner
> powerpc/spinlock: support vcpu preempted check
> x
On 11/07/16 17:10, Waiman Long wrote:
> On 07/06/2016 02:52 AM, Peter Zijlstra wrote:
>> On Tue, Jun 28, 2016 at 10:43:07AM -0400, Pan Xinhui wrote:
>>> change fomr v1:
>>> a simplier definition of default vcpu_is_preempted
>>> skip mahcine type check on ppc, and add config. remove
On 06/07/16 10:19, Peter Zijlstra wrote:
> On Wed, Jul 06, 2016 at 09:47:18AM +0200, Juergen Gross wrote:
>> On 06/07/16 08:52, Peter Zijlstra wrote:
>
>>> Paolo, could you help out with an (x86) KVM interface for this?
>>
>> Xen support of this interface should
On 06/07/16 08:52, Peter Zijlstra wrote:
> On Tue, Jun 28, 2016 at 10:43:07AM -0400, Pan Xinhui wrote:
>> change fomr v1:
>> a simplier definition of default vcpu_is_preempted
>> skip mahcine type check on ppc, and add config. remove dedicated macro.
>> add one patch to drop
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