diff options
Diffstat (limited to 'arch/x86/kernel/sev.c')
| -rw-r--r-- | arch/x86/kernel/sev.c | 32 |
1 files changed, 0 insertions, 32 deletions
diff --git a/arch/x86/kernel/sev.c b/arch/x86/kernel/sev.c index 53a6837d354b..4d0d1c2b65e1 100644 --- a/arch/x86/kernel/sev.c +++ b/arch/x86/kernel/sev.c @@ -46,16 +46,6 @@ static struct ghcb __initdata *boot_ghcb; struct sev_es_runtime_data { struct ghcb ghcb_page; - /* Physical storage for the per-CPU IST stack of the #VC handler */ - char ist_stack[EXCEPTION_STKSZ] __aligned(PAGE_SIZE); - - /* - * Physical storage for the per-CPU fall-back stack of the #VC handler. - * The fall-back stack is used when it is not safe to switch back to the - * interrupted stack in the #VC entry code. - */ - char fallback_stack[EXCEPTION_STKSZ] __aligned(PAGE_SIZE); - /* * Reserve one page per CPU as backup storage for the unencrypted GHCB. * It is needed when an NMI happens while the #VC handler uses the real @@ -99,27 +89,6 @@ DEFINE_STATIC_KEY_FALSE(sev_es_enable_key); /* Needed in vc_early_forward_exception */ void do_early_exception(struct pt_regs *regs, int trapnr); -static void __init setup_vc_stacks(int cpu) -{ - struct sev_es_runtime_data *data; - struct cpu_entry_area *cea; - unsigned long vaddr; - phys_addr_t pa; - - data = per_cpu(runtime_data, cpu); - cea = get_cpu_entry_area(cpu); - - /* Map #VC IST stack */ - vaddr = CEA_ESTACK_BOT(&cea->estacks, VC); - pa = __pa(data->ist_stack); - cea_set_pte((void *)vaddr, pa, PAGE_KERNEL); - - /* Map VC fall-back stack */ - vaddr = CEA_ESTACK_BOT(&cea->estacks, VC2); - pa = __pa(data->fallback_stack); - cea_set_pte((void *)vaddr, pa, PAGE_KERNEL); -} - static __always_inline bool on_vc_stack(struct pt_regs *regs) { unsigned long sp = regs->sp; @@ -787,7 +756,6 @@ void __init sev_es_init_vc_handling(void) for_each_possible_cpu(cpu) { alloc_runtime_data(cpu); init_ghcb(cpu); - setup_vc_stacks(cpu); } sev_es_setup_play_dead(); |