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582077c940
With the introduction of kCFI the addition of ENDBR to SYM_FUNC_START* no longer suffices to make the function indirectly callable. This now requires the use of SYM_TYPED_FUNC_START. As such, remove the implicit ENDBR from SYM_FUNC_START* and add some explicit annotations to fix things up again. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Sami Tolvanen <samitolvanen@google.com> Link: https://lore.kernel.org/r/20250207122546.409116003@infradead.org
29 lines
691 B
ArmAsm
29 lines
691 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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#include <linux/linkage.h>
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#include <asm/nospec-branch.h>
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#include <asm/page_types.h>
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#include <asm/processor-flags.h>
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.text
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.align PAGE_SIZE
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/*
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* asm_acpi_mp_play_dead() - Hand over control of the CPU to the BIOS
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*
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* rdi: Address of the ACPI MADT MPWK ResetVector
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* rsi: PGD of the identity mapping
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*/
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SYM_FUNC_START(asm_acpi_mp_play_dead)
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ANNOTATE_NOENDBR
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/* Turn off global entries. Following CR3 write will flush them. */
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movq %cr4, %rdx
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andq $~(X86_CR4_PGE), %rdx
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movq %rdx, %cr4
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/* Switch to identity mapping */
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movq %rsi, %cr3
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/* Jump to reset vector */
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ANNOTATE_RETPOLINE_SAFE
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jmp *%rdi
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SYM_FUNC_END(asm_acpi_mp_play_dead)
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