[to-be-updated] accel-amdxdna-use-hmm_range_fault_unlocked_timeout-for-range-population.patch removed from -mm tree

[to-be-updated] accel-amdxdna-use-hmm_range_fault_unlocked_timeout-for-range-population.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: accel/amdxdna: use hmm_range_fault_unlocked_timeout() for range population
has been removed from the -mm tree.  Its filename was
     accel-amdxdna-use-hmm_range_fault_unlocked_timeout-for-range-population.patch

This patch was dropped because an updated version will be issued

------------------------------------------------------
From: Stanislav Kinsburskii <skinsburskii@gmail.com>
Subject: accel/amdxdna: use hmm_range_fault_unlocked_timeout() for range population
Date: Fri, 10 Jul 2026 14:27:12 -0700

aie2_populate_range() takes mmap_read_lock() only around
hmm_range_fault().  It keeps a single HMM_RANGE_DEFAULT_TIMEOUT deadline
for the populate pass and retries -EBUSY until that deadline expires.

Use hmm_range_fault_unlocked_timeout() instead.  The HMM helper now owns
the mmap lock and refreshes mapp->range.notifier_seq for its internal
retries.  Pass the remaining jiffies from the existing deadline to HMM,
while preserving the driver's existing outer loop for interval
invalidation retries and for selecting the next invalid mapping.

Keep returning -ETIME when the retry budget expires, matching the driver's
existing timeout error convention.

Link: https://lore.kernel.org/178371883276.900500.12789147320642521200.stgit@skinsburskii
Signed-off-by: Stanislav Kinsburskii <skinsburskii@gmail.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Dave Airlie <airlied@gmail.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Dexuan Cui <decui@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kees Cook <kees@kernel.org>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Lizhi Hou <lizhi.hou@amd.com>
Cc: Long Li <longli@microsoft.com>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Lyude <lyude@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Oded Gabbay <ogabbay@kernel.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Thomas Zimemrmann <tzimmermann@suse.de>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Wei Liu <wei.liu@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/accel/amdxdna/aie2_ctx.c |   17 +++--------------
 1 file changed, 3 insertions(+), 14 deletions(-)

--- a/drivers/accel/amdxdna/aie2_ctx.c~accel-amdxdna-use-hmm_range_fault_unlocked_timeout-for-range-population
+++ a/drivers/accel/amdxdna/aie2_ctx.c
@@ -1061,22 +1061,11 @@ again:
 		return -EFAULT;
 	}
 
-	mapp->range.notifier_seq = mmu_interval_read_begin(&mapp->notifier);
-	mmap_read_lock(mm);
-	ret = hmm_range_fault(&mapp->range);
-	mmap_read_unlock(mm);
+	ret = hmm_range_fault_unlocked_timeout(&mapp->range,
+			max_t(long, timeout - jiffies, 1));
 	if (ret) {
-		if (time_after(jiffies, timeout)) {
+		if (ret == -EBUSY)
 			ret = -ETIME;
-			goto put_mm;
-		}
-
-		if (ret == -EBUSY) {
-			amdxdna_umap_put(mapp);
-			mmput(mm);
-			goto again;
-		}
-
 		goto put_mm;
 	}
 
_

Patches currently in -mm which might be from skinsburskii@gmail.com are

lib-test_hmm-use-device-devt-for-coherent-device-range-selection.patch
accel-amdxdna-use-hmm_range_fault_unlocked_timeout-for-range-population-fix.patch
drm-gpusvm-use-hmm_range_fault_unlocked_timeout-for-range-faults.patch
drm-gpusvm-use-hmm_range_fault_unlocked_timeout-for-range-faults-fix.patch