Damien Le Moal aeb6893761 x86: Fix build regression with CONFIG_KEXEC_JUMP enabled
Build 6.13-rc12 for x86_64 with gcc 14.2.1 fails with the error:

  ld: vmlinux.o: in function `virtual_mapped':
  linux/arch/x86/kernel/relocate_kernel_64.S:249:(.text+0x5915b): undefined reference to `saved_context_gdt_desc'

when CONFIG_KEXEC_JUMP is enabled.

This was introduced by commit 07fa619f2a ("x86/kexec: Restore GDT on
return from ::preserve_context kexec") which introduced a use of
saved_context_gdt_desc without a declaration for it.

Fix that by including asm/asm-offsets.h where saved_context_gdt_desc
is defined (indirectly in include/generated/asm-offsets.h which
asm/asm-offsets.h includes).

Fixes: 07fa619f2a ("x86/kexec: Restore GDT on return from ::preserve_context kexec")
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Acked-by: Borislav Petkov (AMD) <bp@alien8.de>
Acked-by: David Woodhouse <dwmw@amazon.co.uk>
Closes: https://lore.kernel.org/oe-kbuild-all/202411270006.ZyyzpYf8-lkp@intel.com/
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2024-12-09 10:13:28 -08:00
2024-12-09 10:00:25 -08:00
2024-09-01 20:43:24 -07:00
2022-09-28 09:02:20 +02:00
2024-12-08 14:03:39 -08:00
2024-03-18 03:36:32 -06:00

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 reStructuredText 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.
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