search for: preempt_enable_no_resch

Displaying 20 results from an estimated 40 matches for "preempt_enable_no_resch".

2020 Apr 08
0
[RFC PATCH 09/26] x86/paravirt: Add runtime_patch()
On Tue, Apr 07, 2020 at 10:03:06PM -0700, Ankur Arora wrote: > +/* > + * preempt_enable_no_resched() so we don't add any preemption points until > + * after the caller has returned. > + */ > +#define preempt_enable_runtime_patch() preempt_enable_no_resched() > +#define preempt_disable_runtime_patch() preempt_disable() NAK, this is probably a stright preemption bug, also, afaic...
2016 Jan 04
4
[PATCH v2 17/32] arm: define __smp_xxx
...where needed. > > But it would be possible to add a checkpatch test for this. Wasn't the whole purpose of these things for 'drivers' (namely virtio/xen hypervisor interaction) to use these? And I suppose most of virtio would actually be modules, so you cannot do what I did with preempt_enable_no_resched() either. But yes, it would be good to limit the use of these things.
2016 Jan 04
4
[PATCH v2 17/32] arm: define __smp_xxx
...where needed. > > But it would be possible to add a checkpatch test for this. Wasn't the whole purpose of these things for 'drivers' (namely virtio/xen hypervisor interaction) to use these? And I suppose most of virtio would actually be modules, so you cannot do what I did with preempt_enable_no_resched() either. But yes, it would be good to limit the use of these things.
2020 Feb 05
0
[PATCH] x86/mm/kmmio: Use this_cpu_ptr() instead get_cpu_var() for kmmio_ctx
...ctx->active++; @@ -314,11 +314,8 @@ int kmmio_handler(struct pt_regs *regs, unsigned long addr) * the user should drop to single cpu before tracing. */ - put_cpu_var(kmmio_ctx); return 1; /* fault handled */ -no_kmmio_ctx: - put_cpu_var(kmmio_ctx); no_kmmio: rcu_read_unlock(); preempt_enable_no_resched(); @@ -333,7 +330,7 @@ int kmmio_handler(struct pt_regs *regs, unsigned long addr) static int post_kmmio_handler(unsigned long condition, struct pt_regs *regs) { int ret = 0; - struct kmmio_context *ctx = &get_cpu_var(kmmio_ctx); + struct kmmio_context *ctx = this_cpu_ptr(&kmmio_ctx);...
2016 Jan 02
2
[PATCH v2 17/32] arm: define __smp_xxx
On Thu, Dec 31, 2015 at 09:07:59PM +0200, Michael S. Tsirkin wrote: > 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 <mst at redhat.com> >
2016 Jan 02
2
[PATCH v2 17/32] arm: define __smp_xxx
On Thu, Dec 31, 2015 at 09:07:59PM +0200, Michael S. Tsirkin wrote: > 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 <mst at redhat.com> >
2007 May 11
30
[patch 00/28]xen: Xen implementation for paravirt_ops
Hi Andi, This series of patches implements the Xen paravirt-ops interface. It applies to 2.6.21-git13 + patches-2.6.21-git7-070507-1.tar.gz (I think "unwinder" is the only patch which doesn't apply to git13, and the sched-clock patches are the only ones which this series actually needs). Changes since the last posting: - More netfront review and cleanup - Added ability to
2007 May 11
30
[patch 00/28]xen: Xen implementation for paravirt_ops
Hi Andi, This series of patches implements the Xen paravirt-ops interface. It applies to 2.6.21-git13 + patches-2.6.21-git7-070507-1.tar.gz (I think "unwinder" is the only patch which doesn't apply to git13, and the sched-clock patches are the only ones which this series actually needs). Changes since the last posting: - More netfront review and cleanup - Added ability to
2007 May 11
30
[patch 00/28]xen: Xen implementation for paravirt_ops
Hi Andi, This series of patches implements the Xen paravirt-ops interface. It applies to 2.6.21-git13 + patches-2.6.21-git7-070507-1.tar.gz (I think "unwinder" is the only patch which doesn't apply to git13, and the sched-clock patches are the only ones which this series actually needs). Changes since the last posting: - More netfront review and cleanup - Added ability to
2007 May 22
35
[patch 00/33] xen: Xen paravirt_ops implementation
Hi, This is the Xen implementation for the paravirt_ops interface. The series is based on 2.6.22-rc1-mm1, and I think its ready to be cooked in -mm with a view to being merged in 2.6.23. The first part of the series is some small changes to the core kernel. Apart from the new code added in "Allocate and free vmalloc areas" (posted many times before), they are simply a few one-liners
2007 May 22
35
[patch 00/33] xen: Xen paravirt_ops implementation
Hi, This is the Xen implementation for the paravirt_ops interface. The series is based on 2.6.22-rc1-mm1, and I think its ready to be cooked in -mm with a view to being merged in 2.6.23. The first part of the series is some small changes to the core kernel. Apart from the new code added in "Allocate and free vmalloc areas" (posted many times before), they are simply a few one-liners
2007 May 22
35
[patch 00/33] xen: Xen paravirt_ops implementation
Hi, This is the Xen implementation for the paravirt_ops interface. The series is based on 2.6.22-rc1-mm1, and I think its ready to be cooked in -mm with a view to being merged in 2.6.23. The first part of the series is some small changes to the core kernel. Apart from the new code added in "Allocate and free vmalloc areas" (posted many times before), they are simply a few one-liners
2007 May 04
31
[patch 00/29] xen: Xen implementation for paravirt_ops
Hi Andi, This series of patches implements the Xen paravirt-ops interface. It applies to 2.6.21-git3 + ff patches-2.6.21-git3-070501-1.tar.gz. Changes since the last posting: - reviews of xenbus (me), netfront (hch, rusty, herbert xu) and blockfront (hch), with most comments addressed. Netfront review revealed a couple of real bugs, and the code for all three is looking cleaner
2007 May 04
31
[patch 00/29] xen: Xen implementation for paravirt_ops
Hi Andi, This series of patches implements the Xen paravirt-ops interface. It applies to 2.6.21-git3 + ff patches-2.6.21-git3-070501-1.tar.gz. Changes since the last posting: - reviews of xenbus (me), netfront (hch, rusty, herbert xu) and blockfront (hch), with most comments addressed. Netfront review revealed a couple of real bugs, and the code for all three is looking cleaner
2007 Apr 23
27
[PATCH 00/25] xen: Xen implementation for paravirt_ops
Hi Andi, This series of patches implements the Xen paravirt-ops interface. It applies to 2.6.21-rc7 + your patches + the last batch of pv_ops patches I posted. This patch generally restricts itself to Xen-specific parts of the tree, though it does make a few small changes elsewhere. These patches include: - some helper routines for allocating address space and walking pagetables - Xen
2007 Apr 23
27
[PATCH 00/25] xen: Xen implementation for paravirt_ops
Hi Andi, This series of patches implements the Xen paravirt-ops interface. It applies to 2.6.21-rc7 + your patches + the last batch of pv_ops patches I posted. This patch generally restricts itself to Xen-specific parts of the tree, though it does make a few small changes elsewhere. These patches include: - some helper routines for allocating address space and walking pagetables - Xen
2007 Apr 29
33
[patch 00/32] xen: Xen implementation for paravirt_ops
Hi Andi, This series of patches implements the Xen paravirt-ops interface. It applies to 2.6.21 + 2.6.21-070428-1 + the patches I've posted over the last couple of days. Changes since the last posting: - update per review comments - comment each file - comment barrier use - use common cpu sibling setup - fixed a few minor bugs, specifically a traceirq mismatch warning - some
2007 Apr 29
33
[patch 00/32] xen: Xen implementation for paravirt_ops
Hi Andi, This series of patches implements the Xen paravirt-ops interface. It applies to 2.6.21 + 2.6.21-070428-1 + the patches I've posted over the last couple of days. Changes since the last posting: - update per review comments - comment each file - comment barrier use - use common cpu sibling setup - fixed a few minor bugs, specifically a traceirq mismatch warning - some
2007 Apr 18
43
[RFC PATCH 00/35] Xen i386 paravirtualization support
Unlike full virtualization in which the virtual machine provides the same platform interface as running natively on the hardware, paravirtualization requires modification to the guest operating system to work with the platform interface provided by the hypervisor. Xen was designed with performance in mind. Calls to the hypervisor are minimized, batched if necessary, and non-critical codepaths
2007 Apr 18
43
[RFC PATCH 00/35] Xen i386 paravirtualization support
Unlike full virtualization in which the virtual machine provides the same platform interface as running natively on the hardware, paravirtualization requires modification to the guest operating system to work with the platform interface provided by the hypervisor. Xen was designed with performance in mind. Calls to the hypervisor are minimized, batched if necessary, and non-critical codepaths