From: Christoph Hellwig <hch@lst.de>
To: Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>,
Felix Kuehling <Felix.Kuehling@amd.com>,
Alex Deucher <alexander.deucher@amd.com>,
Zhenyu Wang <zhenyuw@linux.intel.com>,
Zhi Wang <zhi.a.wang@intel.com>, Felipe Balbi <balbi@kernel.org>,
"Michael S. Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>, Jens Axboe <axboe@kernel.dk>,
linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org,
intel-gvt-dev@lists.freedesktop.org,
intel-gfx@lists.freedesktop.org, linux-usb@vger.kernel.org,
virtualization@lists.linux-foundation.org,
linux-fsdevel@vger.kernel.org, io-uring@vger.kernel.org,
linux-mm@kvack.org
Subject: [PATCH 2/6] i915/gvt/kvm: a NULL ->mm does not mean a thread is a kthread
Date: Sat, 4 Apr 2020 11:40:57 +0200 [thread overview]
Message-ID: <20200404094101.672954-3-hch@lst.de> (raw)
In-Reply-To: <20200404094101.672954-1-hch@lst.de>
Use the proper API instead.
Fixes: f440c8a572d7 ("drm/i915/gvt/kvmgt: read/write GPA via KVM API")
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/gpu/drm/i915/gvt/kvmgt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
index 074c4efb58eb..5848400620b4 100644
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c
+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
@@ -2037,7 +2037,7 @@ static int kvmgt_rw_gpa(unsigned long handle, unsigned long gpa,
struct kvmgt_guest_info *info;
struct kvm *kvm;
int idx, ret;
- bool kthread = current->mm == NULL;
+ bool kthread = (current->flags & PF_KTHREAD);
if (!handle_valid(handle))
return -ESRCH;
--
2.25.1
next prev parent reply other threads:[~2020-04-04 9:41 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-04 9:40 improve use_mm / unuse_mm Christoph Hellwig
2020-04-04 9:40 ` [PATCH 1/6] amdgpu: a NULL ->mm does not mean a thread is a kthread Christoph Hellwig
2020-04-06 16:07 ` Felix Kuehling
2020-04-04 9:40 ` Christoph Hellwig [this message]
2020-04-04 10:05 ` [PATCH 2/6] i915/gvt/kvm: " Sergei Shtylyov
2020-04-07 3:08 ` Yan Zhao
2020-04-13 13:27 ` Christoph Hellwig
2020-04-14 0:04 ` Yan Zhao
2020-04-14 7:00 ` Christoph Hellwig
2020-04-14 7:03 ` Yan Zhao
2020-04-04 9:40 ` [PATCH 3/6] i915/gvt: remove unused xen bits Christoph Hellwig
2020-04-08 1:44 ` Zhenyu Wang
2020-04-13 13:08 ` Christoph Hellwig
2020-04-14 3:04 ` Zhenyu Wang
2020-04-04 9:40 ` [PATCH 4/6] kernel: move use_mm/unuse_mm to kthread.c Christoph Hellwig
2020-04-06 16:09 ` Felix Kuehling
2020-04-04 9:41 ` [PATCH 5/6] kernel: better document the use_mm/unuse_mm API contract Christoph Hellwig
2020-04-04 13:07 ` [Intel-gfx] " Pavel Begunkov
2020-04-06 16:10 ` Felix Kuehling
2020-04-04 9:41 ` [PATCH 6/6] kernel: set USER_DS in kthread_use_mm Christoph Hellwig
2020-04-06 21:49 ` Michael S. Tsirkin
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