From: Qiang Yu <qiang.yu@amd.com>
To: "Alex Deucher" <alexander.deucher@amd.com>,
"Christian König" <christian.koenig@amd.com>,
"Pan, Xinhui" <Xinhui.Pan@amd.com>,
"David Airlie" <airlied@linux.ie>,
"Daniel Vetter" <daniel@ffwll.ch>, "Qiang Yu" <qiang.yu@amd.com>,
"Paul Menzel" <pmenzel@molgen.mpg.de>
Cc: <amd-gfx@lists.freedesktop.org>,
<dri-devel@lists.freedesktop.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH] drm/amdgpu: fix suspend/resume hang regression
Date: Tue, 1 Mar 2022 14:26:54 +0800 [thread overview]
Message-ID: <20220301062655.232955-1-qiang.yu@amd.com> (raw)
Regression has been reported that suspend/resume may hang with
the previous vm ready check commit:
https://gitlab.freedesktop.org/drm/amd/-/issues/1915#note_1278198
So bring back the evicted list check as a temp fix.
Fixes: cc8dd2cc1a97 ("drm/amdgpu: check vm ready by amdgpu_vm->evicting flag")
Signed-off-by: Qiang Yu <qiang.yu@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 2cd9f1a2e5fa..fc4563cf2828 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -779,7 +779,8 @@ bool amdgpu_vm_ready(struct amdgpu_vm *vm)
amdgpu_vm_eviction_lock(vm);
ret = !vm->evicting;
amdgpu_vm_eviction_unlock(vm);
- return ret;
+
+ return ret && list_empty(&vm->evicted);
}
/**
--
2.25.1
next reply other threads:[~2022-03-01 6:28 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-01 6:26 Qiang Yu [this message]
2022-03-01 7:48 ` Christian König
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