From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Linus Torvalds <torvalds@linuxfoundation.org>,
Peter Zijlstra <peterz@infradead.org>,
Paul McKenney <paulmck@kernel.org>,
Christoph Hellwig <hch@lst.de>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Dave Airlie <airlied@redhat.com>,
Gerd Hoffmann <kraxel@redhat.com>,
David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
virtualization@lists.linux-foundation.org,
spice-devel@lists.freedesktop.org,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, Alexander Viro <viro@zeniv.linux.org.uk>,
Benjamin LaHaise <bcrl@kvack.org>,
linux-fsdevel@vger.kernel.org, linux-aio@kvack.org,
Chris Mason <clm@fb.com>, Josef Bacik <josef@toxicpanda.com>,
David Sterba <dsterba@suse.com>,
linux-btrfs@vger.kernel.org, x86@kernel.org,
Vineet Gupta <vgupta@synopsys.com>,
linux-snps-arc@lists.infradead.org,
Russell King <linux@armlinux.org.uk>,
Arnd Bergmann <arnd@arndb.de>,
linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org,
Michal Simek <monstr@monstr.eu>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
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Greentime Hu <green.hu@gmail.com>,
Vincent Chen <deanbo422@gmail.com>,
Michael Ellerman <mpe@ellerman.id.au>,
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Juri Lelli <juri.lelli@redhat.com>,
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Dietmar Eggemann <dietmar.eggemann@arm.com>,
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Subject: [patch V3 34/37] drm/qxl: Replace io_mapping_map_atomic_wc()
Date: Tue, 03 Nov 2020 10:27:46 +0100 [thread overview]
Message-ID: <20201103095900.045603050@linutronix.de> (raw)
In-Reply-To: 20201103092712.714480842@linutronix.de
None of these mapping requires the side effect of disabling pagefaults and
preemption.
Use io_mapping_map_local_wc() instead, rename the related functions
accordingly and clean up qxl_process_single_command() to use a plain
copy_from_user() as the local maps are not disabling pagefaults.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: virtualization@lists.linux-foundation.org
Cc: spice-devel@lists.freedesktop.org
---
V3: New patch
---
drivers/gpu/drm/qxl/qxl_image.c | 18 +++++++++---------
drivers/gpu/drm/qxl/qxl_ioctl.c | 27 +++++++++++++--------------
drivers/gpu/drm/qxl/qxl_object.c | 12 ++++++------
drivers/gpu/drm/qxl/qxl_object.h | 4 ++--
drivers/gpu/drm/qxl/qxl_release.c | 4 ++--
5 files changed, 32 insertions(+), 33 deletions(-)
--- a/drivers/gpu/drm/qxl/qxl_image.c
+++ b/drivers/gpu/drm/qxl/qxl_image.c
@@ -124,12 +124,12 @@ qxl_image_init_helper(struct qxl_device
wrong (check the bitmaps are sent correctly
first) */
- ptr = qxl_bo_kmap_atomic_page(qdev, chunk_bo, 0);
+ ptr = qxl_bo_kmap_local_page(qdev, chunk_bo, 0);
chunk = ptr;
chunk->data_size = height * chunk_stride;
chunk->prev_chunk = 0;
chunk->next_chunk = 0;
- qxl_bo_kunmap_atomic_page(qdev, chunk_bo, ptr);
+ qxl_bo_kunmap_local_page(qdev, chunk_bo, ptr);
{
void *k_data, *i_data;
@@ -143,7 +143,7 @@ qxl_image_init_helper(struct qxl_device
i_data = (void *)data;
while (remain > 0) {
- ptr = qxl_bo_kmap_atomic_page(qdev, chunk_bo, page << PAGE_SHIFT);
+ ptr = qxl_bo_kmap_local_page(qdev, chunk_bo, page << PAGE_SHIFT);
if (page == 0) {
chunk = ptr;
@@ -157,7 +157,7 @@ qxl_image_init_helper(struct qxl_device
memcpy(k_data, i_data, size);
- qxl_bo_kunmap_atomic_page(qdev, chunk_bo, ptr);
+ qxl_bo_kunmap_local_page(qdev, chunk_bo, ptr);
i_data += size;
remain -= size;
page++;
@@ -175,10 +175,10 @@ qxl_image_init_helper(struct qxl_device
page_offset = offset_in_page(out_offset);
size = min((int)(PAGE_SIZE - page_offset), remain);
- ptr = qxl_bo_kmap_atomic_page(qdev, chunk_bo, page_base);
+ ptr = qxl_bo_kmap_local_page(qdev, chunk_bo, page_base);
k_data = ptr + page_offset;
memcpy(k_data, i_data, size);
- qxl_bo_kunmap_atomic_page(qdev, chunk_bo, ptr);
+ qxl_bo_kunmap_local_page(qdev, chunk_bo, ptr);
remain -= size;
i_data += size;
out_offset += size;
@@ -189,7 +189,7 @@ qxl_image_init_helper(struct qxl_device
qxl_bo_kunmap(chunk_bo);
image_bo = dimage->bo;
- ptr = qxl_bo_kmap_atomic_page(qdev, image_bo, 0);
+ ptr = qxl_bo_kmap_local_page(qdev, image_bo, 0);
image = ptr;
image->descriptor.id = 0;
@@ -212,7 +212,7 @@ qxl_image_init_helper(struct qxl_device
break;
default:
DRM_ERROR("unsupported image bit depth\n");
- qxl_bo_kunmap_atomic_page(qdev, image_bo, ptr);
+ qxl_bo_kunmap_local_page(qdev, image_bo, ptr);
return -EINVAL;
}
image->u.bitmap.flags = QXL_BITMAP_TOP_DOWN;
@@ -222,7 +222,7 @@ qxl_image_init_helper(struct qxl_device
image->u.bitmap.palette = 0;
image->u.bitmap.data = qxl_bo_physical_address(qdev, chunk_bo, 0);
- qxl_bo_kunmap_atomic_page(qdev, image_bo, ptr);
+ qxl_bo_kunmap_local_page(qdev, image_bo, ptr);
return 0;
}
--- a/drivers/gpu/drm/qxl/qxl_ioctl.c
+++ b/drivers/gpu/drm/qxl/qxl_ioctl.c
@@ -89,11 +89,11 @@ apply_reloc(struct qxl_device *qdev, str
{
void *reloc_page;
- reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK);
+ reloc_page = qxl_bo_kmap_local_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK);
*(uint64_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = qxl_bo_physical_address(qdev,
info->src_bo,
info->src_offset);
- qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page);
+ qxl_bo_kunmap_local_page(qdev, info->dst_bo, reloc_page);
}
static void
@@ -105,9 +105,9 @@ apply_surf_reloc(struct qxl_device *qdev
if (info->src_bo && !info->src_bo->is_primary)
id = info->src_bo->surface_id;
- reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK);
+ reloc_page = qxl_bo_kmap_local_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK);
*(uint32_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = id;
- qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page);
+ qxl_bo_kunmap_local_page(qdev, info->dst_bo, reloc_page);
}
/* return holding the reference to this object */
@@ -149,7 +149,6 @@ static int qxl_process_single_command(st
struct qxl_bo *cmd_bo;
void *fb_cmd;
int i, ret, num_relocs;
- int unwritten;
switch (cmd->type) {
case QXL_CMD_DRAW:
@@ -185,21 +184,21 @@ static int qxl_process_single_command(st
goto out_free_reloc;
/* TODO copy slow path code from i915 */
- fb_cmd = qxl_bo_kmap_atomic_page(qdev, cmd_bo, (release->release_offset & PAGE_MASK));
- unwritten = __copy_from_user_inatomic_nocache
- (fb_cmd + sizeof(union qxl_release_info) + (release->release_offset & ~PAGE_MASK),
- u64_to_user_ptr(cmd->command), cmd->command_size);
+ fb_cmd = qxl_bo_kmap_local_page(qdev, cmd_bo, (release->release_offset & PAGE_MASK));
- {
+ if (copy_from_user(fb_cmd + sizeof(union qxl_release_info) +
+ (release->release_offset & ~PAGE_MASK),
+ u64_to_user_ptr(cmd->command), cmd->command_size)) {
+ ret = -EFAULT;
+ } else {
struct qxl_drawable *draw = fb_cmd;
draw->mm_time = qdev->rom->mm_clock;
}
- qxl_bo_kunmap_atomic_page(qdev, cmd_bo, fb_cmd);
- if (unwritten) {
- DRM_ERROR("got unwritten %d\n", unwritten);
- ret = -EFAULT;
+ qxl_bo_kunmap_local_page(qdev, cmd_bo, fb_cmd);
+ if (ret) {
+ DRM_ERROR("copy from user failed %d\n", ret);
goto out_free_release;
}
--- a/drivers/gpu/drm/qxl/qxl_object.c
+++ b/drivers/gpu/drm/qxl/qxl_object.c
@@ -172,8 +172,8 @@ int qxl_bo_kmap(struct qxl_bo *bo, void
return 0;
}
-void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev,
- struct qxl_bo *bo, int page_offset)
+void *qxl_bo_kmap_local_page(struct qxl_device *qdev,
+ struct qxl_bo *bo, int page_offset)
{
unsigned long offset;
void *rptr;
@@ -188,7 +188,7 @@ void *qxl_bo_kmap_atomic_page(struct qxl
goto fallback;
offset = bo->tbo.mem.start << PAGE_SHIFT;
- return io_mapping_map_atomic_wc(map, offset + page_offset);
+ return io_mapping_map_local_wc(map, offset + page_offset);
fallback:
if (bo->kptr) {
rptr = bo->kptr + (page_offset * PAGE_SIZE);
@@ -214,14 +214,14 @@ void qxl_bo_kunmap(struct qxl_bo *bo)
ttm_bo_kunmap(&bo->kmap);
}
-void qxl_bo_kunmap_atomic_page(struct qxl_device *qdev,
- struct qxl_bo *bo, void *pmap)
+void qxl_bo_kunmap_local_page(struct qxl_device *qdev,
+ struct qxl_bo *bo, void *pmap)
{
if ((bo->tbo.mem.mem_type != TTM_PL_VRAM) &&
(bo->tbo.mem.mem_type != TTM_PL_PRIV))
goto fallback;
- io_mapping_unmap_atomic(pmap);
+ io_mapping_unmap_local(pmap);
return;
fallback:
qxl_bo_kunmap(bo);
--- a/drivers/gpu/drm/qxl/qxl_object.h
+++ b/drivers/gpu/drm/qxl/qxl_object.h
@@ -88,8 +88,8 @@ extern int qxl_bo_create(struct qxl_devi
struct qxl_bo **bo_ptr);
extern int qxl_bo_kmap(struct qxl_bo *bo, void **ptr);
extern void qxl_bo_kunmap(struct qxl_bo *bo);
-void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev, struct qxl_bo *bo, int page_offset);
-void qxl_bo_kunmap_atomic_page(struct qxl_device *qdev, struct qxl_bo *bo, void *map);
+void *qxl_bo_kmap_local_page(struct qxl_device *qdev, struct qxl_bo *bo, int page_offset);
+void qxl_bo_kunmap_local_page(struct qxl_device *qdev, struct qxl_bo *bo, void *map);
extern struct qxl_bo *qxl_bo_ref(struct qxl_bo *bo);
extern void qxl_bo_unref(struct qxl_bo **bo);
extern int qxl_bo_pin(struct qxl_bo *bo);
--- a/drivers/gpu/drm/qxl/qxl_release.c
+++ b/drivers/gpu/drm/qxl/qxl_release.c
@@ -408,7 +408,7 @@ union qxl_release_info *qxl_release_map(
union qxl_release_info *info;
struct qxl_bo *bo = release->release_bo;
- ptr = qxl_bo_kmap_atomic_page(qdev, bo, release->release_offset & PAGE_MASK);
+ ptr = qxl_bo_kmap_local_page(qdev, bo, release->release_offset & PAGE_MASK);
if (!ptr)
return NULL;
info = ptr + (release->release_offset & ~PAGE_MASK);
@@ -423,7 +423,7 @@ void qxl_release_unmap(struct qxl_device
void *ptr;
ptr = ((void *)info) - (release->release_offset & ~PAGE_MASK);
- qxl_bo_kunmap_atomic_page(qdev, bo, ptr);
+ qxl_bo_kunmap_local_page(qdev, bo, ptr);
}
void qxl_release_fence_buffer_objects(struct qxl_release *release)
next prev parent reply other threads:[~2020-11-03 10:34 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-03 9:27 [patch V3 00/37] mm/highmem: Preemptible variant of kmap_atomic & friends Thomas Gleixner
2020-11-03 9:27 ` [patch V3 01/37] mm/highmem: Un-EXPORT __kmap_atomic_idx() Thomas Gleixner
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
2020-11-03 9:27 ` [patch V3 02/37] highmem: Remove unused functions Thomas Gleixner
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
2020-11-03 9:27 ` [patch V3 03/37] fs: Remove asm/kmap_types.h includes Thomas Gleixner
2020-11-03 11:12 ` David Sterba
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
2020-11-03 9:27 ` [patch V3 04/37] sh/highmem: Remove all traces of unused cruft Thomas Gleixner
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
2020-11-03 9:27 ` [patch V3 05/37] asm-generic: Provide kmap_size.h Thomas Gleixner
2020-11-03 12:25 ` Arnd Bergmann
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
2020-11-03 9:27 ` [patch V3 06/37] highmem: Provide generic variant of kmap_atomic* Thomas Gleixner
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
2020-11-03 9:27 ` [patch V3 07/37] highmem: Make DEBUG_HIGHMEM functional Thomas Gleixner
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
2020-11-03 9:27 ` [patch V3 08/37] x86/mm/highmem: Use generic kmap atomic implementation Thomas Gleixner
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
2020-11-03 9:27 ` [patch V3 09/37] arc/mm/highmem: " Thomas Gleixner
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
2020-11-03 9:27 ` [patch V3 10/37] ARM: highmem: Switch to generic kmap atomic Thomas Gleixner
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
[not found] ` <CGME20201112081036eucas1p14e135a370d3bccab311727fd2e89f4df@eucas1p1.samsung.com>
2020-11-12 8:10 ` [patch V3 10/37] " Marek Szyprowski
2020-11-12 11:03 ` Thomas Gleixner
2020-11-12 11:07 ` Sebastian Andrzej Siewior
2020-11-03 9:27 ` [patch V3 11/37] csky/mm/highmem: " Thomas Gleixner
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
2020-11-03 9:27 ` [patch V3 12/37] microblaze/mm/highmem: " Thomas Gleixner
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
2020-11-03 9:27 ` [patch V3 13/37] mips/mm/highmem: " Thomas Gleixner
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
2020-11-03 9:27 ` [patch V3 14/37] nds32/mm/highmem: " Thomas Gleixner
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
2020-11-03 9:27 ` [patch V3 15/37] powerpc/mm/highmem: " Thomas Gleixner
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
2020-11-03 9:27 ` [patch V3 16/37] sparc/mm/highmem: " Thomas Gleixner
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
2020-11-03 9:27 ` [patch V3 17/37] xtensa/mm/highmem: " Thomas Gleixner
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
2020-11-03 9:27 ` [patch V3 18/37] highmem: Get rid of kmap_types.h Thomas Gleixner
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
2020-11-03 9:27 ` [patch V3 19/37] mm/highmem: Remove the old kmap_atomic cruft Thomas Gleixner
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
2020-11-03 9:27 ` [patch V3 20/37] io-mapping: Cleanup atomic iomap Thomas Gleixner
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
2020-11-03 9:27 ` [patch V3 21/37] Documentation/io-mapping: Remove outdated blurb Thomas Gleixner
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
2020-11-03 9:27 ` [patch V3 22/37] highmem: High implementation details and document API Thomas Gleixner
2020-11-03 17:48 ` Linus Torvalds
2020-11-03 19:00 ` Thomas Gleixner
2020-11-06 23:27 ` [tip: core/mm] " tip-bot2 for Thomas Gleixner
2020-11-03 9:27 ` [patch V3 23/37] sched: Make migrate_disable/enable() independent of RT Thomas Gleixner
2020-11-03 9:27 ` [patch V3 24/37] sched: highmem: Store local kmaps in task struct Thomas Gleixner
2020-11-03 13:49 ` Thomas Gleixner
2020-11-03 13:51 ` [patch V4 " Thomas Gleixner
2020-11-03 9:27 ` [patch V3 25/37] mm/highmem: Provide kmap_local* Thomas Gleixner
2020-11-03 9:27 ` [patch V3 26/37] io-mapping: Provide iomap_local variant Thomas Gleixner
2020-11-03 9:27 ` [patch V3 27/37] x86/crashdump/32: Simplify copy_oldmem_page() Thomas Gleixner
2020-11-03 9:27 ` [patch V3 28/37] mips/crashdump: " Thomas Gleixner
2020-11-03 9:27 ` [patch V3 29/37] ARM: mm: Replace kmap_atomic_pfn() Thomas Gleixner
2020-11-03 9:27 ` [patch V3 30/37] highmem: Remove kmap_atomic_pfn() Thomas Gleixner
2020-11-03 9:27 ` [patch V3 31/37] drm/ttm: Replace kmap_atomic() usage Thomas Gleixner
2020-11-03 9:27 ` [patch V3 32/37] drm/vmgfx: Replace kmap_atomic() Thomas Gleixner
2020-11-03 9:27 ` [patch V3 33/37] highmem: Remove kmap_atomic_prot() Thomas Gleixner
2020-11-03 9:27 ` Thomas Gleixner [this message]
2020-11-03 9:27 ` [patch V3 35/37] drm/nouveau/device: Replace io_mapping_map_atomic_wc() Thomas Gleixner
2020-11-03 9:27 ` [patch V3 36/37] drm/i915: " Thomas Gleixner
2020-11-03 9:27 ` [patch V3 37/37] io-mapping: Remove io_mapping_map_atomic_wc() Thomas Gleixner
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