From: Christoph Hellwig <hch@infradead.org>
To: Niklas Schnelle <schnelle@linux.ibm.com>
Cc: Christoph Hellwig <hch@infradead.org>,
Alex Williamson <alex.williamson@redhat.com>,
Gerald Schaefer <gerald.schaefer@linux.ibm.com>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
Gerd Bayer <gbayer@linux.ibm.com>,
Matthew Rosato <mjrosato@linux.ibm.com>,
Jason Gunthorpe <jgg@ziepe.ca>,
linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org,
kvm@vger.kernel.org
Subject: Re: [PATCH v3 2/3] vfio/pci: Tolerate oversized BARs by disallowing mmap
Date: Wed, 19 Jun 2024 21:09:56 -0700 [thread overview]
Message-ID: <ZnOrlB6fqYC4S-RJ@infradead.org> (raw)
In-Reply-To: <76a840711f7c073e52149107aa62045c462d7033.camel@linux.ibm.com>
On Wed, Jun 19, 2024 at 12:56:47PM +0200, Niklas Schnelle wrote:
> In short, the ISM BAR 0 is stupidly large but this is intentional. It
> not fitting in the VMAP is simply the least crazy filter I could come
> up with to keep the ISM device from causing trouble for use of vfio-pci
> mmap() for other, normal, PCI devices.
Then maybe add a PCI quirk to prevent mapping it. This would also
affect the sysfs resource0 file unless I'm missing something.
next prev parent reply other threads:[~2024-06-20 4:09 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-29 11:36 [PATCH v3 0/3] vfio/pci: s390: Fix issues preventing VFIO_PCI_MMAP=y for s390 and enable it Niklas Schnelle
2024-05-29 11:36 ` [PATCH v3 1/3] s390/pci: Fix s390_mmio_read/write syscall page fault handling Niklas Schnelle
2024-06-11 11:21 ` Niklas Schnelle
2024-06-11 12:08 ` Niklas Schnelle
2024-06-11 13:23 ` Niklas Schnelle
2024-06-11 14:13 ` David Hildenbrand
2024-06-11 14:47 ` Niklas Schnelle
2024-06-11 15:10 ` David Hildenbrand
2024-06-11 15:37 ` Niklas Schnelle
2024-06-11 22:21 ` Alex Williamson
2024-06-12 7:28 ` David Hildenbrand
2024-06-11 15:56 ` Niklas Schnelle
2024-05-29 11:36 ` [PATCH v3 2/3] vfio/pci: Tolerate oversized BARs by disallowing mmap Niklas Schnelle
2024-06-18 15:51 ` Alex Williamson
2024-06-19 7:11 ` Christoph Hellwig
2024-06-19 10:56 ` Niklas Schnelle
2024-06-20 4:09 ` Christoph Hellwig [this message]
2024-06-20 12:06 ` Niklas Schnelle
2024-06-20 12:29 ` Gerd Bayer
2024-05-29 11:36 ` [PATCH v3 3/3] vfio/pci: Enable PCI resource mmap() on s390 and remove VFIO_PCI_MMAP Niklas Schnelle
2024-06-18 15:52 ` Alex Williamson
2024-06-03 15:50 ` [PATCH v3 0/3] vfio/pci: s390: Fix issues preventing VFIO_PCI_MMAP=y for s390 and enable it Christian Borntraeger
2024-06-04 9:27 ` Niklas Schnelle
2024-06-05 7:49 ` Niklas Schnelle
2024-06-06 17:27 ` Alex Williamson
2024-06-07 7:38 ` Alexander Gordeev
2024-06-07 7:47 ` Niklas Schnelle
2024-06-07 14:23 ` Jason Gunthorpe
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