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Thu, 9 Apr 2026 15:00:50 +0000 (GMT) Date: Thu, 9 Apr 2026 17:00:49 +0200 From: Steffen Eiden To: Paolo Bonzini Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Alex Williamson Subject: Re: [PATCH 1/3] VFIO: take reference to the KVM module Message-ID: <20260409150049.71106-A-seiden@linux.ibm.com> References: <20260407180107.1603697-1-pbonzini@redhat.com> <20260407180107.1603697-2-pbonzini@redhat.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260407180107.1603697-2-pbonzini@redhat.com> X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDA5MDEzNSBTYWx0ZWRfX1EXJLKARMbUL BCRNGeho+fI6H/aAdqHuwnZ8DKyW2ccX4wIB0bBlofoXrTlkP0HM5oh/B1wl+yInercWg6sCYIV oqXshgn+XebG+GLYG9bEZxJPHPC4S/IzZdURzCYFWlAj3zQhtrPymttVp4+lWOK/9sZxFBNVXDB H3xc2H3Q32eMvb0jAJ9Xja8Ja90pDV7CwkrbtNjKIPIU6y1wVx+YEolpfbs5AOiw49fJmQNPwbP eVltNIyTY9BPvBB5VgDvg8qHqJniX/r7xDvvnSiv+KNX+XXJiT/2Zea8QIZ32JeLV3JdMBIB6Z0 AsWG9XyOrKY+eTkATlwe20XbBHZBGYok2FJluOLAc681ZFurOZhqJsdLe7ucJiNcJ7+IwYamKcs RPFfArGT+RcAxWOgCb4EqNKffyCUNjbT50gZuEgBswNWymQy465NQr1UmCA1IY7RheVTvu7XfQk vo8gMHwHj27EFI28tmA== X-Authority-Analysis: v=2.4 cv=FsY1OWrq c=1 sm=1 tr=0 ts=69d7bf25 cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=kj9zAlcOel0A:10 a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=U7nrCbtTmkRpXpFmAIza:22 a=20KFwNOVAAAA:8 a=VnNF1IyMAAAA:8 a=5N8hvMFE4S4G4LBNZQsA:9 a=CjuIK1q_8ugA:10 X-Proofpoint-ORIG-GUID: hnGWGNOsOYEb2Ys2DG_IKCL1gz0UI7RA X-Proofpoint-GUID: hnGWGNOsOYEb2Ys2DG_IKCL1gz0UI7RA X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-09_04,2026-04-09_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 priorityscore=1501 impostorscore=0 spamscore=0 phishscore=0 lowpriorityscore=0 clxscore=1011 adultscore=0 malwarescore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604010000 definitions=main-2604090135 On Tue, Apr 07, 2026 at 08:01:05PM +0200, Paolo Bonzini wrote: > VFIO is implicitly taking a reference to the KVM module between > vfio_device_get_kvm_safe and vfio_device_put_kvm, thanks to > symbol_get and symbol_put. > > In preparation for removing symbol_get and symbol_put themselves > from VFIO, actually store a pointer to the KVM module and use > module_get()/module_put() to keep KVM alive. > > Signed-off-by: Paolo Bonzini Reviewed-by: Steffen Eiden