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Filename Latest commit message Latest commit date
Jason Wang cc5e710759 vhost: log dirty page correctly 
Vhost dirty page logging API is designed to sync through GPA. But we
try to log GIOVA when device IOTLB is enabled. This is wrong and may
lead to missing data after migration.

To solve this issue, when logging with device IOTLB enabled, we will:

1) reuse the device IOTLB translation result of GIOVA->HVA mapping to
   get HVA, for writable descriptor, get HVA through iovec. For used
   ring update, translate its GIOVA to HVA
2) traverse the GPA->HVA mapping to get the possible GPA and log
   through GPA. Pay attention this reverse mapping is not guaranteed
   to be unique, so we should log each possible GPA in this case.

This fix the failure of scp to guest during migration. In -next, we
will probably support passing GIOVA->GPA instead of GIOVA->HVA.

Fixes: 6b1e6cc785 ("vhost: new device IOTLB API")
Reported-by: Jintack Lim <jintack@cs.columbia.edu>
Cc: Jintack Lim <jintack@cs.columbia.edu>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-17 21:43:24 -08:00
arch ARM: SoC fixes 2019-01-14 10:34:14 +12:00
block
certs
crypto
Documentation Documentation: timestamping: correct path to net_tstamp.h 2019-01-17 21:39:59 -08:00
drivers vhost: log dirty page correctly 2019-01-17 21:43:24 -08:00
firmware
fs for-5.0-rc1-tag 2019-01-14 05:55:51 +12:00
include net: phy: Add missing features to PHY drivers 2019-01-16 15:41:02 -08:00
init
ipc
kernel Andrea Righi fixed a NULL pointer dereference in trace_kprobe_create() 2019-01-16 05:28:26 +12:00
lib sbitmap: Protect swap_lock from hardirq 2019-01-15 16:29:57 +12:00
LICENSES
mm
net af_packet: fix raw sockets over 6in4 tunnel 2019-01-17 15:54:45 -08:00
samples Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-01-16 05:13:36 +12:00
scripts remove dma_zalloc_coherent 2019-01-12 10:52:40 -08:00
security
sound remove dma_zalloc_coherent 2019-01-12 10:52:40 -08:00
tools selftests: tc-testing: fix parsing of ife type 2019-01-16 14:05:42 -08:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS Staging driver fixes for 5.0-rc2 2019-01-14 05:49:35 +12:00
Makefile Linux 5.0-rc2 2019-01-14 10:41:12 +12:00
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.