bf5ff27644
The code at the trampoline entry point is executed in real-mode. In real-mode, #VC exceptions can't be handled so anything that might cause such an exception must be avoided. In the standard trampoline entry code this is the WBINVD instruction and the call to verify_cpu(), which are both not needed anyway when running as an SEV-ES guest. Signed-off-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lkml.kernel.org/r/20200907131613.12703-66-joro@8bytes.org
45 lines
1006 B
ArmAsm
45 lines
1006 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Real-mode blob header; this should match realmode.h and be
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* readonly; for mutable data instead add pointers into the .data
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* or .bss sections as appropriate.
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*/
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#include <linux/linkage.h>
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#include <asm/page_types.h>
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#include <asm/segment.h>
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#include "realmode.h"
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.section ".header", "a"
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.balign 16
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SYM_DATA_START(real_mode_header)
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.long pa_text_start
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.long pa_ro_end
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/* SMP trampoline */
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.long pa_trampoline_start
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.long pa_trampoline_header
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#ifdef CONFIG_AMD_MEM_ENCRYPT
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.long pa_sev_es_trampoline_start
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#endif
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#ifdef CONFIG_X86_64
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.long pa_trampoline_pgd;
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#endif
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/* ACPI S3 wakeup */
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#ifdef CONFIG_ACPI_SLEEP
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.long pa_wakeup_start
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.long pa_wakeup_header
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#endif
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/* APM/BIOS reboot */
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.long pa_machine_real_restart_asm
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#ifdef CONFIG_X86_64
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.long __KERNEL32_CS
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#endif
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SYM_DATA_END(real_mode_header)
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/* End signature, used to verify integrity */
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.section ".signature","a"
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.balign 4
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SYM_DATA(end_signature, .long REALMODE_END_SIGNATURE)
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