github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-08-16 20:39:58 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph
Linux kernel source tree
998,397 Commits 1 Branch 942 Tags 24 GiB
C 96.9%
Assembly 0.9%
Rust 0.6%
Shell 0.6%
Python 0.5%
Other 0.3%
3a3e0fad16
Go to file
Jason Wang 3a3e0fad16 vhost-vdpa: fix vm_flags for virtqueue doorbell mapping 
The virtqueue doorbell is usually implemented via registeres but we
don't provide the necessary vma->flags like VM_PFNMAP. This may cause
several issues e.g when userspace tries to map the doorbell via vhost
IOTLB, kernel may panic due to the page is not backed by page
structure. This patch fixes this by setting the necessary
vm_flags. With this patch, try to map doorbell via IOTLB will fail
with bad address.

Cc: stable@vger.kernel.org
Fixes: ddd89d0a05 ("vhost_vdpa: support doorbell mapping via mmap")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20210413091557.29008-1-jasowang@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-05-03 04:55:52 -04:00
arch - Fix BDW Xeon's stepping in the PEBS isolation table of CPUs 2021-04-25 09:42:06 -07:00
block block: return -EBUSY when there are open partitions in blkdev_reread_part 2021-04-21 10:49:37 -06:00
certs
crypto
Documentation Networking fixes for 5.12-rc8, including fixes from netfilter, 2021-04-17 09:57:15 -07:00
drivers vhost-vdpa: fix vm_flags for virtqueue doorbell mapping 2021-05-03 04:55:52 -04:00
fs ovl: fix reference counting in ovl_mmap error path 2021-04-23 14:42:39 -07:00
include virtio-pci library: report resource address 2021-05-03 04:55:52 -04:00
init
ipc
kernel - Fix ordering in the queued writer lock's slowpath. 2021-04-25 09:10:10 -07:00
lib lib: remove "expecting prototype" kernel-doc warnings 2021-04-16 16:10:37 -07:00
LICENSES
mm mm/filemap: fix mapping_seek_hole_data on THP & 32-bit 2021-04-23 14:42:39 -07:00
net Revert "net/rds: Avoid potential use after free in rds_send_remove_from_sock" 2021-04-24 09:32:35 -07:00
samples
scripts kasan: remove redundant config option 2021-04-16 16:10:36 -07:00
security KEYS: trusted: Fix TPM reservation for seal/unseal 2021-04-21 16:28:20 -07:00
sound
tools perf tools fixes for v5.12: 4th batch 2021-04-25 09:48:46 -07:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap .mailmap: fix old email addresses 2021-04-09 14:54:23 -07:00
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS ARM SoC fixes for v5.12, part 2 2021-04-18 13:23:26 -07:00
Makefile Linux 5.12 2021-04-25 13:49:08 -07:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.