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Bjorn Helgaas 5df12742b7 Revert "PCI: acpiphp: Reassign resources on bridge if necessary" This reverts commit `40613da52b` and the subsequent fix to it: `cc22522fd5` ("PCI: acpiphp: Use pci_assign_unassigned_bridge_resources() only for non-root bus") `40613da52b` fixed a problem where hot-adding a device with large BARs failed if the bridge windows programmed by firmware were not large enough. `cc22522fd5` ("PCI: acpiphp: Use pci_assign_unassigned_bridge_resources() only for non-root bus") fixed a problem with `40613da52b`: an ACPI hot-add of a device on a PCI root bus (common in the virt world) or firmware sending ACPI Bus Check to non-existent Root Ports (e.g., on Dell Inspiron 7352/0W6WV0) caused a NULL pointer dereference and suspend/resume hangs. Unfortunately the combination of `40613da52b` and `cc22522fd5` caused other problems: - Fiona reported that hot-add of SCSI disks in QEMU virtual machine fails sometimes. - Dongli reported a similar problem with hot-add of SCSI disks. - Jonathan reported a console freeze during boot on bare metal due to an error in radeon GPU initialization. Revert both patches to avoid adding these problems. This means we will again see the problems with hot-adding devices with large BARs and the NULL pointer dereferences and suspend/resume issues that `40613da52b` and `cc22522fd5` were intended to fix. Fixes: `40613da52b` ("PCI: acpiphp: Reassign resources on bridge if necessary") Fixes: `cc22522fd5` ("PCI: acpiphp: Use pci_assign_unassigned_bridge_resources() only for non-root bus") Reported-by: Fiona Ebner <f.ebner@proxmox.com> Closes: https://lore.kernel.org/r/9eb669c0-d8f2-431d-a700-6da13053ae54@proxmox.com Reported-by: Dongli Zhang <dongli.zhang@oracle.com> Closes: https://lore.kernel.org/r/3c4a446a-b167-11b8-f36f-d3c1b49b42e9@oracle.com Reported-by: Jonathan Woithe <jwoithe@just42.net> Closes: https://lore.kernel.org/r/ZXpaNCLiDM+Kv38H@marvin.atrad.com.au Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Igor Mammedov <imammedo@redhat.com> Cc: <stable@vger.kernel.org>		2023-12-15 14:55:10 -06:00
arch	parisc architecture fixes for kernel v6.7-rc1 (part 2):	2023-11-12 11:05:31 -08:00
block
certs
crypto
Documentation	Probes fixes for v6.7-rc1:	2023-11-10 16:35:04 -08:00
drivers	Revert "PCI: acpiphp: Reassign resources on bridge if necessary"	2023-12-15 14:55:10 -06:00
fs	Sixteen smb3/cifs client fixes	2023-11-11 17:17:22 -08:00
include	PCI/ASPM: Add pci_enable_link_state_locked()	2023-12-11 12:07:42 -06:00
init
io_uring
ipc
kernel	Probes fixes for v6.7-rc1:	2023-11-10 16:35:04 -08:00
lib
LICENSES
mm
net
rust
samples
scripts
security
sound	sound fixes for 6.7-rc1	2023-11-10 11:57:51 -08:00
tools	LoongArch changes for v6.7	2023-11-12 10:58:08 -08:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
.rustfmt.toml
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile	Linux 6.7-rc1	2023-11-12 16:19:07 -08:00
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.