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Merge tag 'drm-intel-fixes-2020-01-23' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

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- Avoid overflow with huge userptr objects
- uAPI fix to correctly handle negative values in
  engine->uabi_class/instance (cc: stable)

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200123135045.GA12584@jlahtine-desk.ger.corp.intel.com
This commit is contained in:
Dave Airlie 2020-01-24 08:57:37 +10:00
commit b52937145d
4 changed files with 15 additions and 12 deletions
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12
drivers/gpu/drm/i915/gem/i915_gem_busy.c
View File

@ -9,16 +9,16 @@
#include "i915_gem_ioctls.h"
#include "i915_gem_object.h"
static __always_inline u32 __busy_read_flag(u8 id)
static __always_inline u32 __busy_read_flag(u16 id)
{
if (id == (u8)I915_ENGINE_CLASS_INVALID)
if (id == (u16)I915_ENGINE_CLASS_INVALID)
return 0xffff0000u;
GEM_BUG_ON(id >= 16);
return 0x10000u << id;
}
static __always_inline u32 __busy_write_id(u8 id)
static __always_inline u32 __busy_write_id(u16 id)
{
/*
* The uABI guarantees an active writer is also amongst the read
@ -29,14 +29,14 @@ static __always_inline u32 __busy_write_id(u8 id)
* last_read - hence we always set both read and write busy for
* last_write.
*/
if (id == (u8)I915_ENGINE_CLASS_INVALID)
if (id == (u16)I915_ENGINE_CLASS_INVALID)
return 0xffffffffu;
return (id + 1) | __busy_read_flag(id);
}
static __always_inline unsigned int
__busy_set_if_active(const struct dma_fence *fence, u32 (*flag)(u8 id))
__busy_set_if_active(const struct dma_fence *fence, u32 (*flag)(u16 id))
{
const struct i915_request *rq;
@ -57,7 +57,7 @@ __busy_set_if_active(const struct dma_fence *fence, u32 (*flag)(u8 id))
return 0;
/* Beware type-expansion follies! */
BUILD_BUG_ON(!typecheck(u8, rq->engine->uabi_class));
BUILD_BUG_ON(!typecheck(u16, rq->engine->uabi_class));
return flag(rq->engine->uabi_class);
}

9
drivers/gpu/drm/i915/gem/i915_gem_userptr.c
View File

@ -402,7 +402,7 @@ struct get_pages_work {
static struct sg_table *
__i915_gem_userptr_alloc_pages(struct drm_i915_gem_object *obj,
struct page **pvec, int num_pages)
struct page **pvec, unsigned long num_pages)
{
unsigned int max_segment = i915_sg_segment_size();
struct sg_table *st;
@ -448,9 +448,10 @@ __i915_gem_userptr_get_pages_worker(struct work_struct *_work)
{
struct get_pages_work *work = container_of(_work, typeof(*work), work);
struct drm_i915_gem_object *obj = work->obj;
const int npages = obj->base.size >> PAGE_SHIFT;
const unsigned long npages = obj->base.size >> PAGE_SHIFT;
unsigned long pinned;
struct page **pvec;
int pinned, ret;
int ret;
ret = -ENOMEM;
pinned = 0;
@ -553,7 +554,7 @@ __i915_gem_userptr_get_pages_schedule(struct drm_i915_gem_object *obj)
static int i915_gem_userptr_get_pages(struct drm_i915_gem_object *obj)
{
const int num_pages = obj->base.size >> PAGE_SHIFT;
const unsigned long num_pages = obj->base.size >> PAGE_SHIFT;
struct mm_struct *mm = obj->userptr.mm->mm;
struct page **pvec;
struct sg_table *pages;

4
drivers/gpu/drm/i915/gt/intel_engine_types.h
View File

@ -274,8 +274,8 @@ struct intel_engine_cs {
u8 class;
u8 instance;
u8 uabi_class;
u8 uabi_instance;
u16 uabi_class;
u16 uabi_instance;
u32 uabi_capabilities;
u32 context_size;

2
drivers/gpu/drm/i915/i915_gem_gtt.c
View File

@ -1177,6 +1177,7 @@ gen8_ppgtt_insert_pte(struct i915_ppgtt *ppgtt,
pd = i915_pd_entry(pdp, gen8_pd_index(idx, 2));
vaddr = kmap_atomic_px(i915_pt_entry(pd, gen8_pd_index(idx, 1)));
do {
GEM_BUG_ON(iter->sg->length < I915_GTT_PAGE_SIZE);
vaddr[gen8_pd_index(idx, 0)] = pte_encode | iter->dma;
iter->dma += I915_GTT_PAGE_SIZE;
@ -1660,6 +1661,7 @@ static void gen6_ppgtt_insert_entries(struct i915_address_space *vm,
vaddr = kmap_atomic_px(i915_pt_entry(pd, act_pt));
do {
GEM_BUG_ON(iter.sg->length < I915_GTT_PAGE_SIZE);
vaddr[act_pte] = pte_encode | GEN6_PTE_ADDR_ENCODE(iter.dma);
iter.dma += I915_GTT_PAGE_SIZE;