Displaying 20 results from an estimated 100 matches for "svmm".
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svm
2019 Oct 15
0
[PATCH hmm 10/15] nouveau: use mmu_notifier directly for invalidate_range_start
...ivers/gpu/drm/nouveau/nouveau_svm.c b/drivers/gpu/drm/nouveau/nouveau_svm.c
index 668d4bd0c118f1..577f8811925a59 100644
--- a/drivers/gpu/drm/nouveau/nouveau_svm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_svm.c
@@ -88,6 +88,7 @@ nouveau_ivmm_find(struct nouveau_svm *svm, u64 inst)
}
struct nouveau_svmm {
+ struct mmu_notifier notifier;
struct nouveau_vmm *vmm;
struct {
unsigned long start;
@@ -96,7 +97,6 @@ struct nouveau_svmm {
struct mutex mutex;
- struct mm_struct *mm;
struct hmm_mirror mirror;
};
@@ -251,10 +251,11 @@ nouveau_svmm_invalidate(struct nouveau_svmm *svmm, u64 st...
2020 Jan 13
0
[PATCH v6 5/6] nouveau: use new mmu interval notifiers
...a/drivers/gpu/drm/nouveau/nouveau_svm.c b/drivers/gpu/drm/nouveau/nouveau_svm.c
index df9bf1fd1bc0..0343e48d41d7 100644
--- a/drivers/gpu/drm/nouveau/nouveau_svm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_svm.c
@@ -88,7 +88,7 @@ nouveau_ivmm_find(struct nouveau_svm *svm, u64 inst)
}
struct nouveau_svmm {
- struct mmu_notifier notifier;
+ struct mm_struct *mm;
struct nouveau_vmm *vmm;
struct {
unsigned long start;
@@ -98,6 +98,13 @@ struct nouveau_svmm {
struct mutex mutex;
};
+struct svmm_interval {
+ struct mmu_interval_notifier notifier;
+ struct nouveau_svmm *svmm;
+};
+
+static co...
2019 Oct 15
0
[PATCH hmm 11/15] nouveau: use mmu_range_notifier instead of hmm_mirror
...changed, 98 insertions(+), 80 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_svm.c b/drivers/gpu/drm/nouveau/nouveau_svm.c
index 577f8811925a59..712c99918551bc 100644
--- a/drivers/gpu/drm/nouveau/nouveau_svm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_svm.c
@@ -96,8 +96,6 @@ struct nouveau_svmm {
} unmanaged;
struct mutex mutex;
-
- struct hmm_mirror mirror;
};
#define SVMM_DBG(s,f,a...) \
@@ -293,23 +291,11 @@ static const struct mmu_notifier_ops nouveau_mn_ops = {
.free_notifier = nouveau_svmm_free_notifier,
};
-static i...
2020 Jun 19
0
[PATCH 08/16] nouveau/hmm: fault one page at a time
...VIF_VMM_PFNMAP_V0_V |
+ NVIF_VMM_PFNMAP_V0_VRAM;
+ else
+ ioctl_addr[0] = page_to_phys(page) |
+ NVIF_VMM_PFNMAP_V0_V |
+ NVIF_VMM_PFNMAP_V0_HOST;
+ if (range->hmm_pfns[0] & HMM_PFN_WRITE)
+ ioctl_addr[0] |= NVIF_VMM_PFNMAP_V0_W;
}
static int nouveau_range_fault(struct nouveau_svmm *svmm,
struct nouveau_drm *drm, void *data, u32 size,
- unsigned long hmm_pfns[], u64 *ioctl_addr,
+ u64 *ioctl_addr, unsigned long hmm_flags,
struct svm_notifier *notifier)
{
unsigned long timeout =
jiffies + msecs_to_jiffies(HMM_RANGE_DEFAULT_TIMEOUT)...
2020 Jul 01
0
[PATCH v3 1/5] nouveau/hmm: fault one page at a time
...VIF_VMM_PFNMAP_V0_V |
+ NVIF_VMM_PFNMAP_V0_VRAM;
+ else
+ ioctl_addr[0] = page_to_phys(page) |
+ NVIF_VMM_PFNMAP_V0_V |
+ NVIF_VMM_PFNMAP_V0_HOST;
+ if (range->hmm_pfns[0] & HMM_PFN_WRITE)
+ ioctl_addr[0] |= NVIF_VMM_PFNMAP_V0_W;
}
static int nouveau_range_fault(struct nouveau_svmm *svmm,
struct nouveau_drm *drm, void *data, u32 size,
- unsigned long hmm_pfns[], u64 *ioctl_addr,
+ u64 *ioctl_addr, unsigned long hmm_flags,
struct svm_notifier *notifier)
{
unsigned long timeout =
jiffies + msecs_to_jiffies(HMM_RANGE_DEFAULT_TIMEOUT)...
2020 Jul 23
0
[PATCH v4 4/6] nouveau/svm: use the new migration invalidation
...5b3..511fe04cd680 100644
--- a/drivers/gpu/drm/nouveau/nouveau_dmem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_dmem.c
@@ -140,6 +140,7 @@ static vm_fault_t nouveau_dmem_fault_copy_one(struct nouveau_drm *drm,
{
struct device *dev = drm->dev->dev;
struct page *dpage, *spage;
+ struct nouveau_svmm *svmm;
spage = migrate_pfn_to_page(args->src[0]);
if (!spage || !(args->src[0] & MIGRATE_PFN_MIGRATE))
@@ -154,14 +155,19 @@ static vm_fault_t nouveau_dmem_fault_copy_one(struct nouveau_drm *drm,
if (dma_mapping_error(dev, *dma_addr))
goto error_free_page;
+ svmm = spage->...
2020 Jan 14
2
[PATCH v6 5/6] nouveau: use new mmu interval notifiers
On Mon, Jan 13, 2020 at 02:47:02PM -0800, Ralph Campbell wrote:
> void
> nouveau_svmm_fini(struct nouveau_svmm **psvmm)
> {
> struct nouveau_svmm *svmm = *psvmm;
> + struct mmu_interval_notifier *mni;
> +
> if (svmm) {
> mutex_lock(&svmm->mutex);
> + while (true) {
> + mni = mmu_interval_notifier_find(svmm->mm,
> + &nouveau_svm...
2020 Mar 04
5
[PATCH v3 0/4] nouveau/hmm: map pages after migration
...other HMM
related changes were queued there. Now that those have been merged,
these patches just contain changes to nouveau so they could go through
any tree. I guess Ben Skeggs' tree would be appropriate.
Changes since v2:
Added patches 1-3 to fix some minor issues.
Eliminated nouveau_find_svmm() since it is easily found.
Applied Jason Gunthorpe's suggestions for nouveau_pfns_to_args().
Changes since v1:
Rebase to linux-5.6.0-rc4
Address Christoph Hellwig's comments
Ralph Campbell (4):
nouveau/hmm: fix vma range check for migration
nouveau/hmm: check for SVM initialized...
2019 Jul 23
2
[PATCH 4/6] nouveau: unlock mmap_sem on all errors from nouveau_range_fault
...ap_sem);
> - ret = -EBUSY;
> - } else if (ret == -EAGAIN)
> + if (ret == 0)
> ret = -EBUSY;
> + up_read(&range->vma->vm_mm->mmap_sem);
> hmm_range_unregister(range);
> return ret;
Hum..
The caller does this:
again:
ret = nouveau_range_fault(&svmm->mirror, &range);
if (ret == 0) {
mutex_lock(&svmm->mutex);
if (!nouveau_range_done(&range)) {
mutex_unlock(&svmm->mutex);
goto again;
And we can't call nouveau_range_fault() -> hmm_range_fault() without
holding the mmap_sem, so we can't allow no...
2020 Jun 30
6
[PATCH v2 0/5] mm/hmm/nouveau: add PMD system memory mapping
The goal for this series is to introduce the hmm_range_fault() output
array flags HMM_PFN_PMD and HMM_PFN_PUD. This allows a device driver to
know that a given 4K PFN is actually mapped by the CPU using either a
PMD sized or PUD sized CPU page table entry and therefore the device
driver can safely map system memory using larger device MMU PTEs.
The series is based on 5.8.0-rc3 and is intended for
2020 Jan 15
0
[PATCH v6 5/6] nouveau: use new mmu interval notifiers
On 1/14/20 5:00 AM, Jason Gunthorpe wrote:
> On Mon, Jan 13, 2020 at 02:47:02PM -0800, Ralph Campbell wrote:
>> void
>> nouveau_svmm_fini(struct nouveau_svmm **psvmm)
>> {
>> struct nouveau_svmm *svmm = *psvmm;
>> + struct mmu_interval_notifier *mni;
>> +
>> if (svmm) {
>> mutex_lock(&svmm->mutex);
>> + while (true) {
>> + mni = mmu_interval_notifier_find(svmm...
2023 Mar 29
1
[PATCH] drm/nouveau/svm: remove unused ret variable
...rtions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_svm.c b/drivers/gpu/drm/nouveau/nouveau_svm.c
index a74ba8d84ba7..e072d610f2f9 100644
--- a/drivers/gpu/drm/nouveau/nouveau_svm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_svm.c
@@ -926,15 +926,14 @@ nouveau_pfns_map(struct nouveau_svmm *svmm, struct mm_struct *mm,
unsigned long addr, u64 *pfns, unsigned long npages)
{
struct nouveau_pfnmap_args *args = nouveau_pfns_to_args(pfns);
- int ret;
args->p.addr = addr;
args->p.size = npages << PAGE_SHIFT;
mutex_lock(&svmm->mutex);
- ret = nvif_object...
2020 May 08
11
[PATCH 0/6] nouveau/hmm: add support for mapping large pages
hmm_range_fault() returns an array of page frame numbers and flags for
how the pages are mapped in the requested process' page tables. The PFN
can be used to get the struct page with hmm_pfn_to_page() and the page size
order can be determined with compound_order(page) but if the page is larger
than order 0 (PAGE_SIZE), there is no indication that the page is mapped
using a larger page size. To
2019 Aug 06
0
[PATCH 03/15] nouveau: pass struct nouveau_svmm to nouveau_range_fault
We'll need the nouveau_svmm structure to improve the function soon.
For now this allows using the svmm->mm reference to unlock the
mmap_sem, and thus the same dereference chain that the caller uses
to lock and unlock it.
Signed-off-by: Christoph Hellwig <hch at lst.de>
---
drivers/gpu/drm/nouveau/nouveau_svm.c | 12...
2019 Aug 07
4
[PATCH] nouveau/hmm: map pages after migration
...gt;drm, "svm: "f"\n", ##a)
#define SVM_ERR(s,f,a...) NV_WARN((s)->drm, "svm: "f"\n", ##a)
+struct nouveau_pfnmap_args {
+ struct nvif_ioctl_v0 i;
+ struct nvif_ioctl_mthd_v0 m;
+ struct nvif_vmm_pfnmap_v0 p;
+};
+
struct nouveau_ivmm {
struct nouveau_svmm *svmm;
u64 inst;
@@ -734,6 +740,86 @@ nouveau_svm_fault(struct nvif_notify *notify)
return NVIF_NOTIFY_KEEP;
}
+static inline struct nouveau_pfnmap_args *
+nouveau_pfns_to_args(void *pfns)
+{
+ struct nvif_vmm_pfnmap_v0 *p =
+ container_of(pfns, struct nvif_vmm_pfnmap_v0, phys);
+
+ return...
2020 Jul 01
8
[PATCH v3 0/5] mm/hmm/nouveau: add PMD system memory mapping
The goal for this series is to introduce the hmm_pfn_to_map_order()
function. This allows a device driver to know that a given 4K PFN is
actually mapped by the CPU using a larger sized CPU page table entry and
therefore the device driver can safely map system memory using larger
device MMU PTEs.
The series is based on 5.8.0-rc3 and is intended for Jason Gunthorpe's
hmm tree. These were
2020 Aug 27
0
[PATCH] drm/nouveau/svm: remove set but not used 'ret'
...sertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_svm.c b/drivers/gpu/drm/nouveau/nouveau_svm.c
index 2df1c0460559..7c95ffcbd18f 100644
--- a/drivers/gpu/drm/nouveau/nouveau_svm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_svm.c
@@ -815,7 +815,6 @@ nouveau_pfns_map(struct nouveau_svmm *svmm, struct mm_struct *mm,
unsigned long addr, u64 *pfns, unsigned long npages)
{
struct nouveau_pfnmap_args *args = nouveau_pfns_to_args(pfns);
- int ret;
args->p.addr = addr;
args->p.size = npages << PAGE_SHIFT;
@@ -823,8 +822,8 @@ nouveau_pfns_map(struct nouveau_svmm *...
2020 Mar 03
2
[PATCH v2] nouveau/hmm: map pages after migration
...gt;drm, "svm: "f"\n", ##a)
#define SVM_ERR(s,f,a...) NV_WARN((s)->drm, "svm: "f"\n", ##a)
+struct nouveau_pfnmap_args {
+ struct nvif_ioctl_v0 i;
+ struct nvif_ioctl_mthd_v0 m;
+ struct nvif_vmm_pfnmap_v0 p;
+};
+
struct nouveau_ivmm {
struct nouveau_svmm *svmm;
u64 inst;
@@ -782,6 +788,85 @@ nouveau_svm_fault(struct nvif_notify *notify)
return NVIF_NOTIFY_KEEP;
}
+static inline struct nouveau_pfnmap_args *
+nouveau_pfns_to_args(void *pfns)
+{
+ struct nvif_vmm_pfnmap_v0 *p =
+ container_of(pfns, struct nvif_vmm_pfnmap_v0, phys);
+
+ return...
2020 Jan 13
9
[PATCH v6 0/6] mm/hmm/test: add self tests for HMM
This series adds new functions to the mmu interval notifier API to
allow device drivers with MMUs to dynamically mirror a process' page
tables based on device faults and invalidation callbacks. The Nouveau
driver is updated to use the extended API and a set of stand alone self
tests is added to help validate and maintain correctness.
The patches are based on linux-5.5.0-rc6 and are for
2020 Jun 19
0
[PATCH 10/16] nouveau/hmm: support mapping large sysmem pages
...age) |
+ args->p.phys[0] = page_to_phys(page) |
NVIF_VMM_PFNMAP_V0_V |
NVIF_VMM_PFNMAP_V0_HOST;
if (range->hmm_pfns[0] & HMM_PFN_WRITE)
- ioctl_addr[0] |= NVIF_VMM_PFNMAP_V0_W;
+ args->p.phys[0] |= NVIF_VMM_PFNMAP_V0_W;
}
static int nouveau_range_fault(struct nouveau_svmm *svmm,
- struct nouveau_drm *drm, void *data, u32 size,
- u64 *ioctl_addr, unsigned long hmm_flags,
+ struct nouveau_drm *drm,
+ struct nouveau_pfnmap_args *args, u32 size,
+ unsigned long hmm_flags,
struct svm_notifier *notifier)
{
unsigne...