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Filename Latest commit message Latest commit date
Pali Rohár 086226048b PCI: aardvark: Fix support for PCI_BRIDGE_CTL_BUS_RESET on emulated bridge 
commit bc4fac42e5f8460af09c0a7f2f1915be09e20c71 upstream.

Aardvark supports PCIe Hot Reset via PCIE_CORE_CTRL1_REG.

Use it for implementing PCI_BRIDGE_CTL_BUS_RESET bit of PCI_BRIDGE_CONTROL
register on emulated bridge.

With this, the function pci_reset_secondary_bus() starts working and can
reset connected PCIe card. Custom userspace script [1] which uses setpci
can trigger PCIe Hot Reset and reset the card manually.

[1] https://alexforencich.com/wiki/en/pcie/hot-reset-linux

Link: https://lore.kernel.org/r/20211028185659.20329-7-kabel@kernel.org
Fixes: 8a3ebd8de3 ("PCI: aardvark: Implement emulated root PCI bridge config space")
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-01 09:23:31 +01:00
arch KVM: PPC: Book3S HV: Prevent POWER7/8 TLB flush flushing SLB 2021-12-01 09:23:28 +01:00
block block: remove inaccurate requeue check 2021-11-17 09:48:31 +01:00
certs
crypto crypto: pcrypt - Delay write to padata->info 2021-11-17 09:48:40 +01:00
Documentation
drivers PCI: aardvark: Fix support for PCI_BRIDGE_CTL_BUS_RESET on emulated bridge 2021-12-01 09:23:31 +01:00
fs btrfs: fix memory ordering between normal and ordered work functions 2021-11-26 10:47:21 +01:00
include ALSA: hda: hdac_ext_stream: fix potential locking issues 2021-11-26 10:47:23 +01:00
init
ipc ipc: WARN if trying to remove ipc object which is absent 2021-11-26 10:47:21 +01:00
kernel tracing: Fix pid filtering when triggers are attached 2021-12-01 09:23:29 +01:00
lib
LICENSES
mm hugetlbfs: flush TLBs correctly after huge_pmd_unshare 2021-11-26 10:47:23 +01:00
net net: nexthop: fix null pointer dereference when IPv6 is not enabled 2021-12-01 09:23:27 +01:00
samples samples/kretprobes: Fix return value if register_kretprobe() failed 2021-11-17 09:48:39 +01:00
scripts
security fortify: Explicitly disable Clang support 2021-11-21 13:38:50 +01:00
sound ALSA: ctxfi: Fix out-of-range access 2021-12-01 09:23:28 +01:00
tools perf tests: Remove bash construct from record+zstd_comp_decomp.sh 2021-11-26 10:47:18 +01:00
usr
virt
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COPYING
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Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.162 2021-11-26 10:47:23 +01:00
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.