search for: user_ptr

...1 deletions(-) diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 42086ac..7436283 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -737,7 +737,7 @@ pgd_t *xen_get_user_pgd(pgd_t *pgd) if (offset < pgd_index(USER_LIMIT)) { struct page *page = virt_to_page(pgd_page); - user_ptr = (pgd_t *)page->private; + user_ptr = page->private; if (user_ptr) user_ptr += offset; } -- 1.7.2.1

...1 deletions(-) diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 42086ac..7436283 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -737,7 +737,7 @@ pgd_t *xen_get_user_pgd(pgd_t *pgd) if (offset < pgd_index(USER_LIMIT)) { struct page *page = virt_to_page(pgd_page); - user_ptr = (pgd_t *)page->private; + user_ptr = page->private; if (user_ptr) user_ptr += offset; } -- 1.7.2.1

...1 deletions(-) diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 42086ac..7436283 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -737,7 +737,7 @@ pgd_t *xen_get_user_pgd(pgd_t *pgd) if (offset < pgd_index(USER_LIMIT)) { struct page *page = virt_to_page(pgd_page); - user_ptr = (pgd_t *)page->private; + user_ptr = page->private; if (user_ptr) user_ptr += offset; } -- 1.7.2.1

...lt; 1usec long) critical sections. To avoid the overhead of invoking dtrace every time they enter/exit (~6usec), at thread startup they pass dtrace a pointer to a variable which they can then update directly; dtrace checks it during context switches: sched:::off-cpu / pid == $1 && self->user_ptr != 0 && *(int*) copyin(self->usr_ptr, sizeof(int)) != 0 / { /* print notification message */ } The first two predicates are cacheable and eliminate virtually all of the threads in the system, while the third predicate is uncacheable and only required occasionally. To minimize the cost o...

...;linux/dma-buf-map.h> #include <drm/drm_drv.h> #include <drm/drm_atomic.h> @@ -581,7 +582,8 @@ static void qxl_cursor_atomic_update(struct drm_plane *plane, struct drm_gem_object *obj; struct qxl_bo *cursor_bo = NULL, *user_bo = NULL, *old_cursor_bo = NULL; int ret; - void *user_ptr; + struct dma_buf_map user_map; + struct dma_buf_map cursor_map; int size = 64*64*4; ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd), @@ -595,7 +597,7 @@ static void qxl_cursor_atomic_update(struct drm_plane *plane, user_bo = gem_to_qxl_bo(obj); /* pinning is done in the prepare/c...

...lude <drm/drm_atomic.h> @@ -581,6 +582,8 @@ static void qxl_cursor_atomic_update(struct drm_plane *plane, struct drm_gem_object *obj; struct qxl_bo *cursor_bo = NULL, *user_bo = NULL, *old_cursor_bo = NULL; int ret; + struct dma_buf_map user_map; + struct dma_buf_map cursor_map; void *user_ptr; int size = 64*64*4; @@ -595,9 +598,10 @@ static void qxl_cursor_atomic_update(struct drm_plane *plane, user_bo = gem_to_qxl_bo(obj); /* pinning is done in the prepare/cleanup framevbuffer */ - ret = qxl_bo_kmap(user_bo, &user_ptr); + ret = qxl_bo_kmap(user_bo, &user_map);...

...581,6 +582,8 @@ static void qxl_cursor_atomic_update(struct drm_plane *plane, > struct drm_gem_object *obj; > struct qxl_bo *cursor_bo = NULL, *user_bo = NULL, *old_cursor_bo = NULL; > int ret; > + struct dma_buf_map user_map; > + struct dma_buf_map cursor_map; > void *user_ptr; > int size = 64*64*4; > > @@ -595,9 +598,10 @@ static void qxl_cursor_atomic_update(struct drm_plane *plane, > user_bo = gem_to_qxl_bo(obj); > > /* pinning is done in the prepare/cleanup framevbuffer */ > - ret = qxl_bo_kmap(user_bo, &user_ptr); > + r...

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

DRM's fbdev console uses regular load and store operations to update framebuffer memory. The bochs driver on sparc64 requires the use of I/O-specific load and store operations. We have a workaround, but need a long-term solution to the problem. This patchset changes GEM's vmap/vunmap interfaces to forward pointers of type struct dma_buf_map and updates the generic fbdev emulation to use

DRM's fbdev console uses regular load and store operations to update framebuffer memory. The bochs driver on sparc64 requires the use of I/O-specific load and store operations. We have a workaround, but need a long-term solution to the problem. This patchset changes GEM's vmap/vunmap interfaces to forward pointers of type struct dma_buf_map and updates the generic fbdev emulation to use

DRM's fbdev console uses regular load and store operations to update framebuffer memory. The bochs driver on sparc64 requires the use of I/O-specific load and store operations. We have a workaround, but need a long-term solution to the problem. This patchset changes GEM's vmap/vunmap interfaces to forward pointers of type struct dma_buf_map and updates the generic fbdev emulation to use

DRM's fbdev console uses regular load and store operations to update framebuffer memory. The bochs driver on sparc64 requires the use of I/O-specific load and store operations. We have a workaround, but need a long-term solution to the problem. This patchset changes GEM's vmap/vunmap interfaces to forward pointers of type struct dma_buf_map and updates the generic fbdev emulation to use

DRM's fbdev console uses regular load and store operations to update framebuffer memory. The bochs driver on sparc64 requires the use of I/O-specific load and store operations. We have a workaround, but need a long-term solution to the problem. This patchset changes GEM's vmap/vunmap interfaces to forward pointers of type struct dma_buf_map and updates the generic fbdev emulation to use

DRM's fbdev console uses regular load and store operations to update framebuffer memory. The bochs driver on sparc64 requires the use of I/O-specific load and store operations. We have a workaround, but need a long-term solution to the problem. This patchset changes GEM's vmap/vunmap interfaces to forward pointers of type struct dma_buf_map and updates the generic fbdev emulation to use

DRM's fbdev console uses regular load and store operations to update framebuffer memory. The bochs driver on sparc64 requires the use of I/O-specific load and store operations. We have a workaround, but need a long-term solution to the problem. This patchset changes GEM's vmap/vunmap interfaces to forward pointers of type struct dma_buf_map and updates the generic fbdev emulation to use

DRM's fbdev console uses regular load and store operations to update framebuffer memory. The bochs driver on sparc64 requires the use of I/O-specific load and store operations. We have a workaround, but need a long-term solution to the problem. This patchset changes GEM's vmap/vunmap interfaces to forward pointers of type struct dma_buf_map and updates the generic fbdev emulation to use