1 files changed, 36 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3973-drm-amdkfd-Query-vmid-pasid-mapping-through-stored-i.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3973-drm-amdkfd-Query-vmid-pasid-mapping-through-stored-i.patch
new file mode 100644
index 00000000..dd41e462
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3973-drm-amdkfd-Query-vmid-pasid-mapping-through-stored-i.patch
@@ -0,0 +1,36 @@
+From b41ffc6180649d02c93de7bf15c81f44c2a56ee4 Mon Sep 17 00:00:00 2001
+From: Yong Zhao <Yong.Zhao@amd.com>
+Date: Wed, 25 Sep 2019 17:06:12 -0400
+Subject: [PATCH 3973/4256] drm/amdkfd: Query vmid pasid mapping through stored
+ info for non HWS
+
+Because we record the mapping under non HWS mode in the software,
+we can query pasid through vmid using the stored mapping instead of
+reading from ATC registers.
+
+This also prepares for the defeatured ATC block in future ASICs.
+
+Change-Id: I781cb9d30dc0cc93379908ff1cf8da798bb26f13
+Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
+Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
+---
+ drivers/gpu/drm/amd/amdkfd/kfd_int_process_v9.c | 3 +--
+ 1 file changed, 1 insertion(+), 2 deletions(-)
+
+diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_int_process_v9.c b/drivers/gpu/drm/amd/amdkfd/kfd_int_process_v9.c
+index ab8a695c4a3c..ee82632cfed4 100644
+--- a/drivers/gpu/drm/amd/amdkfd/kfd_int_process_v9.c
++++ b/drivers/gpu/drm/amd/amdkfd/kfd_int_process_v9.c
+@@ -58,8 +58,7 @@ static bool event_interrupt_isr_v9(struct kfd_dev *dev,
+ 		memcpy(patched_ihre, ih_ring_entry,
+ 				dev->device_info->ih_ring_entry_size);
+ 
+-		pasid = dev->kfd2kgd->get_atc_vmid_pasid_mapping_pasid(
+-				dev->kgd, vmid);
++		pasid = dev->dqm->vmid_pasid[vmid];
+ 
+ 		/* Patch the pasid field */
+ 		patched_ihre[3] = cpu_to_le32((le32_to_cpu(patched_ihre[3])
+-- 
+2.17.1
+