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Borislav Petkov 96c2ddba89 APEI: GHES: Have GHES honor the panic= setting
[ Upstream commit 5c0e00a391dd0099fe95991bb2f962848d851916 ]

The GHES driver overrides the panic= setting by force-rebooting the
system after a fatal hw error has been reported. The intent being that
such an error would be reported earlier.

However, this is not optimal when a hard-to-debug issue requires long
time to reproduce and when that happens, the box will get rebooted after
30 seconds and thus destroy the whole hw context of when the error
happened.

So rip out the default GHES panic timeout and honor the global one.

In the panic disabled (panic=0) case, the error will still be logged to
dmesg for later inspection and if panic after a hw error is really
required, then that can be controlled the usual way - use panic= on the
cmdline or set it in the kernel .config's CONFIG_PANIC_TIMEOUT.

Reported-by: Feng Tang <feng.tang@linux.alibaba.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Feng Tang <feng.tang@linux.alibaba.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Link: https://patch.msgid.link/20250113125224.GFZ4UMiNtWIJvgpveU@fat_crate.local
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-03-13 12:43:03 +01:00
arch x86/amd_nb: Restrict init function to AMD-based systems 2025-03-13 12:43:02 +01:00
block
certs
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drivers APEI: GHES: Have GHES honor the panic= setting 2025-03-13 12:43:03 +01:00
fs btrfs: convert BUG_ON in btrfs_reloc_cow_block() to proper error handling 2025-03-13 12:43:02 +01:00
include
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ipc
kernel printk: Fix signed integer overflow when defining LOG_BUF_LEN_MAX 2025-03-13 12:43:02 +01:00
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net vsock: Allow retrying on connect() failure 2025-03-13 12:43:00 +01:00
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scripts genksyms: fix memory leak when the same symbol is read from *.symref file 2025-03-13 12:43:00 +01:00
security tomoyo: don't emit warning in tomoyo_write_control() 2025-03-13 12:43:03 +01:00
sound
tools ktest.pl: Check kernelrelease return in get_version 2025-03-13 12:43:01 +01:00
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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.