Merge tag 'x86_boot_for_v7.4_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 boot updates from Borislav Petkov

- Rework the early decompressor some and drop the version of p

Merge tag 'x86_boot_for_v7.4_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 boot updates from Borislav Petkov

- Rework the early decompressor some and drop the version of panic()
there which used vsnprintf() supplied by the EFI stub even in legacy
boot cases, where the EFI stub is not present (Ard Biesheuvel)

- Fix unbootable VMs with CONFIG_PVH=y and CONFIG_KASAN_GENERIC=y where
the compiler decides not to inline __builtin_{memcmp,memset}(). Force
the inlining with the kernel's own __inline_* versions (Mauricio
Faria de Oliveira)

- Cleanups and fixlets

* tag 'x86_boot_for_v7.4_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/boot: Drop unused implementation of panic()
x86/boot: Move unaccepted memory handling out of the decompressor
x86/tdx: Share tdx_panic() with the EFI stub
x86/pvh: Really inline memcmp() and memset() to fix unbootable VMs
x86/asm: Group inline string functions
x86/asm, x86/boot: Carve out inline memcmp() into a separate header
x86/boot: Remove redundant "cc" clobber in memcmp() and document it
x86/boot: Use BASE_BAUD and DEFAULT_SERIAL_PORT

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x86/asm: Group inline string functions

Group the __inline string functions in the same header.

Use <asm/shared/string.h> since __inline_memcmp() must remain there for use
by arch/x86/boot/string.c.

x86/asm: Group inline string functions

Group the __inline string functions in the same header.

Use <asm/shared/string.h> since __inline_memcmp() must remain there for use
by arch/x86/boot/string.c.

No functional changes.

Signed-off-by: Mauricio Faria de Oliveira <mfo@igalia.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://patch.msgid.link/20260921-pvh-kasan-inline-v10-3-08da47943d8e@igalia.com

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x86/asm, x86/boot: Carve out inline memcmp() into a separate header

Move the inline memcmp() function currently only available in boot/string.c
into the shared string function header <asm/shared/str

x86/asm, x86/boot: Carve out inline memcmp() into a separate header

Move the inline memcmp() function currently only available in boot/string.c
into the shared string function header <asm/shared/string.h> to be reused.

This is not done through <asm/string.h> to avoid pulling unnecessary code
in boot/string.c that causes build errors in boot/compressed/string.c
and purgatory/purgatory.ro.

No functional changes.

[ bp: Massage commit message. ]

Signed-off-by: Mauricio Faria de Oliveira <mfo@igalia.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://patch.msgid.link/20260921-pvh-kasan-inline-v10-2-08da47943d8e@igalia.com

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