search for: __test_and_clear_bit

...t.c +++ b/drivers/gpu/drm/nouveau/core/core/event.c @@ -100,18 +100,6 @@ nouveau_event_handler_destroy(struct nouveau_event *event, int index, kfree_rcu(handler, rcu); } -static void -nouveau_event_put_locked(struct nouveau_event *event, int index, - struct nouveau_eventh *handler) -{ - if (__test_and_clear_bit(NVKM_EVENT_ENABLE, &handler->flags)) { - if (!--event->index[index].refs) { - if (event->disable) - event->disable(event, index); - } - } -} - void nouveau_event_put(struct nouveau_event *event, int index, struct nouveau_eventh *handler) @@ -122,7 +110,12 @@ nouveau_ev...

...irq_mask) ) + test_and_clear_bit(pirq, &d->pirq_mask[0]) ) { ASSERT(action->ack_type != ACKTYPE_NONE); if ( --action->in_flight == 0 ) @@ -322,7 +322,7 @@ int pirq_guest_unmask(struct domain *d) } } - if ( __test_and_clear_bit(cpu, &cpu_eoi_map) ) + if ( cpu_test_and_clear(cpu, cpu_eoi_map) ) { __set_eoi_ready(desc); spin_unlock(&desc->lock); @@ -493,13 +493,13 @@ int pirq_guest_unbind(struct domain *d, switch ( action->ack_type ) { case ACKTYPE...

...nt.c +++ b/drivers/gpu/drm/nouveau/core/core/event.c @@ -51,11 +51,13 @@ static void nouveau_event_put_locked(struct nouveau_event *event, int index, struct nouveau_eventh *handler) { - if (!--event->index[index].refs) { - if (event->disable) - event->disable(event, index); + if (__test_and_clear_bit(NVKM_EVENT_ENABLE, &handler->flags)) { + if (!--event->index[index].refs) { + if (event->disable) + event->disable(event, index); + } + list_del(&handler->head); } - list_del(&handler->head); } void @@ -82,10 +84,12 @@ nouveau_event_get(struct nouveau_eve...

...signed long *addr) { int oldbit; - asm volatile(LOCK_PREFIX "btr %2,%1\n\t" + asm volatile(LOCK_PREFIX "btrl %2,%1\n\t" "sbb %0,%0" : "=r" (oldbit), ADDR : "Ir" (nr) : "memory"); @@ -276,7 +276,7 @@ static inline int __test_and_clear_bit(int nr, volatile unsigned long *addr) { int oldbit; - asm volatile("btr %2,%1\n\t" + asm volatile("btrl %2,%1\n\t" "sbb %0,%0" : "=r" (oldbit), ADDR : "Ir" (nr)); diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/inc...

...> > - asm volatile(LOCK_PREFIX "btr %2,%1\n\t" > + asm volatile(LOCK_PREFIX "btrl %2,%1\n\t" > "sbb %0,%0" > : "=r" (oldbit), ADDR : "Ir" (nr) : "memory"); > > @@ -276,7 +276,7 @@ static inline int __test_and_clear_bit(int nr, volatile unsigned long *addr) > { > int oldbit; > > - asm volatile("btr %2,%1\n\t" > + asm volatile("btrl %2,%1\n\t" > "sbb %0,%0" > : "=r" (oldbit), ADDR > : "Ir" (nr)); > diff --git a...

This series was originally motivated by a deadlock, introduced in commit 1d7c71a3e2f77336df536855b0efd2dc5bdeb41b 'drm/nouveau/disp: port vblank handling to event interface', due to inverted lock order between nouveau_drm_vblank_enable() and nouveau_drm_vblank_handler() (the complete lockdep report is included in the patch 4/5 changelog). Because this series fixes the vblank event

Hi, This is a proof of concept of GPU forwarding for Linux guest on Linux host. I'd like to get comments and suggestions from community before I put more time on it. To summarize what it is: 1. It's a solution to bring GPU acceleration for Linux vm guest on Linux host. It could works with different GPU although the current proof of concept only works with Intel GPU. 2. The basic idea

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

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

Hello everyone, this is the fourth version of the patch series that introduces ARMv7 with virtualization extensions support in Xen. The series allows Xen and Dom0 to boot on a Cortex-A15 based Versatile Express simulator. See the following announce email for more informations about what we are trying to achieve, as well as the original git history: See

Hello everyone, this is the very first version of the patch series that introduces ARMv7 with virtualization extensions support in Xen. The series allows Xen and Dom0 to boot on a Cortex-A15 based Versatile Express simulator. See the following announce email for more informations about what we are trying to achieve, as well as the original git history: See