From: Philip Yang <Philip.Yang@amd.com>
To: amd-gfx@lists.freedesktop.org
Cc: Philip Yang <Philip.Yang@amd.com>
Subject: [PATCH 1/2] drm/amdkfd: set prefetch GPU has access attribute
Date: Wed, 5 May 2021 13:56:16 -0400 [thread overview]
Message-ID: <20210505175617.30404-1-Philip.Yang@amd.com> (raw)
After svm range prefetch and migrate to GPU, if GPU has no access or
access in place attribute, add GPU to range access_bitmap to be able to
update GPU page table.
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
---
drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
index d9111fea724b..3b640772d9c5 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -2869,6 +2869,17 @@ svm_range_set_attr(struct kfd_process *p, uint64_t start, uint64_t size,
continue;
}
+ if (migrated && prange->prefetch_loc) {
+ int gpuidx;
+
+ gpuidx = kfd_process_gpuidx_from_gpuid(p,
+ prange->prefetch_loc);
+ if (gpuidx >= 0 &&
+ !test_bit(gpuidx, prange->bitmap_access) &&
+ !test_bit(gpuidx, prange->bitmap_aip))
+ bitmap_set(prange->bitmap_access, gpuidx, 1);
+ }
+
r = svm_range_validate_and_map(mm, prange, MAX_GPU_INSTANCE,
true, true);
if (r)
--
2.17.1
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next reply other threads:[~2021-05-05 17:56 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-05 17:56 Philip Yang [this message]
2021-05-05 17:56 ` [PATCH 2/2] drm/amdkfd: set new unregistered range accessible by GPU Philip Yang
2021-05-05 20:03 ` Felix Kuehling
2021-05-07 19:07 ` [PATCH 2/2] drm/amdkfd: unregistered range accessible by all GPUs Philip Yang
2021-05-10 12:56 ` Felix Kuehling
2021-05-11 15:14 ` philip yang
2021-05-11 15:15 ` [PATCH v2 2/2] drm/amdkfd: new " Philip Yang
2021-05-11 15:39 ` Felix Kuehling
2021-05-05 20:01 ` [PATCH 1/2] drm/amdkfd: set prefetch GPU has access attribute Felix Kuehling
2021-05-05 20:10 ` Felix Kuehling
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