From: Eric Huang <JinhuiEric.Huang@amd.com>
Date: Fri, 9 Jul 2021 18:59:20 +0000 (-0400)
Subject: Revert "drm/amdkfd: Add heavy-weight TLB flush after unmapping"
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=430f8e6edbaac8abfddf76f1aef732d9c6257211;p=uclinux-h8%2Flinux.git

Revert "drm/amdkfd: Add heavy-weight TLB flush after unmapping"

This reverts commit 1098d658bef05e5fee634aab0b6a1fa590cfca24.

Reason for revert: it causes regressions on several Asics.

Signed-off-by: Eric Huang <jinhuieric.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index 84894cd81ced..e48acdd03c1a 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -1563,7 +1563,6 @@ static int kfd_ioctl_unmap_memory_from_gpu(struct file *filep,
 			       i, args->n_devices);
 			goto unmap_memory_from_gpu_failed;
 		}
-		kfd_flush_tlb(peer_pdd, TLB_FLUSH_HEAVYWEIGHT);
 		args->n_success = i+1;
 	}
 	kfree(devices_arr);