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Filename Latest commit message Latest commit date
Paolo Bonzini 3f9fbe7031 mm: provide a saner PTE walking API for modules
commit 9fd6dad1261a541b3f5fa7dc5b152222306e6702 upstream.

Currently, the follow_pfn function is exported for modules but
follow_pte is not.  However, follow_pfn is very easy to misuse,
because it does not provide protections (so most of its callers
assume the page is writable!) and because it returns after having
already unlocked the page table lock.

Provide instead a simplified version of follow_pte that does
not have the pmdpp and range arguments.  The older version
survives as follow_invalidate_pte() for use by fs/dax.c.

Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-02-26 10:10:28 +01:00
arch arm64: tegra: Add power-domain for Tegra210 HDA 2021-02-26 10:10:27 +01:00
block bfq-iosched: Revert "bfq: Fix computation of shallow depth" 2021-02-17 10:35:16 +01:00
certs
crypto crypto: asym_tpm: correct zero out potential secrets 2021-01-12 20:16:17 +01:00
Documentation KVM: Forbid the use of tagged userspace addresses for memslots 2021-02-03 23:25:57 +01:00
drivers usb: quirks: add quirk to start video capture on ELMO L-12F document camera reliable 2021-02-26 10:10:27 +01:00
fs mm: provide a saner PTE walking API for modules 2021-02-26 10:10:28 +01:00
include mm: provide a saner PTE walking API for modules 2021-02-26 10:10:28 +01:00
init fgraph: Initialize tracing_graph_pause at task creation 2021-02-10 09:25:29 +01:00
ipc
kernel bpf: Fix truncation handling for mod32 dst reg wrt zero 2021-02-26 10:10:26 +01:00
lib udp: fix skb_copy_and_csum_datagram with odd segment sizes 2021-02-17 10:35:19 +01:00
LICENSES
mm mm: provide a saner PTE walking API for modules 2021-02-26 10:10:28 +01:00
net net: bridge: Fix a warning when del bridge sysfs 2021-02-23 15:02:25 +01:00
samples samples: bpf: Fix lwt_len_hist reusing previous BPF map 2020-12-30 11:51:12 +01:00
scripts scripts: set proper OpenSSL include dir also for sign-file 2021-02-26 10:10:27 +01:00
security cap: fix conversions on getxattr 2021-02-17 10:35:15 +01:00
sound ASoC: ak4458: correct reset polarity 2021-02-13 13:52:55 +01:00
tools selftests: txtimestamp: fix compilation issue 2021-02-17 10:35:17 +01:00
usr
virt mm: provide a saner PTE walking API for modules 2021-02-26 10:10:28 +01:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS Documentation/llvm: add documentation on building w/ Clang/LLVM 2020-08-26 10:40:46 +02:00
Makefile Linux 5.4.100 2021-02-23 15:02:26 +01:00
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.