diff options
Diffstat (limited to 'arch/x86/boot/compressed/idt_64.c')
-rw-r--r-- | arch/x86/boot/compressed/idt_64.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/boot/compressed/idt_64.c b/arch/x86/boot/compressed/idt_64.c index 804a502ee0d2..9b93567d663a 100644 --- a/arch/x86/boot/compressed/idt_64.c +++ b/arch/x86/boot/compressed/idt_64.c @@ -52,3 +52,17 @@ void load_stage2_idt(void) load_boot_idt(&boot_idt_desc); } + +void cleanup_exception_handling(void) +{ + /* + * Flush GHCB from cache and map it encrypted again when running as + * SEV-ES guest. + */ + sev_es_shutdown_ghcb(); + + /* Set a null-idt, disabling #PF and #VC handling */ + boot_idt_desc.size = 0; + boot_idt_desc.address = 0; + load_boot_idt(&boot_idt_desc); +} |