x86/kexec: Add data section to relocate_kernel

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Now that the relocate_kernel page is handled sanely by a linker script
we can have actual data, and just use %rip-relative addressing to access
it.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Baoquan He <bhe@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Link: https://lore.kernel.org/r/20241205153343.3275139-10-dwmw2@infradead.org

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David Woodhouse 2024-12-05 15:05:15 +00:00 • committed by Ingo Molnar

parent cb33ff9e06

commit 8dbec5c77b

3 changed files with 38 additions and 33 deletions

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8

arch/x86/kernel/machine_kexec_64.c

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62

arch/x86/kernel/relocate_kernel_64.S

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1

arch/x86/kernel/vmlinux.lds.S

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