diff options
Diffstat (limited to 'arch/x86/mm')
| -rw-r--r-- | arch/x86/mm/kasan_init_64.c | 4 | ||||
| -rw-r--r-- | arch/x86/mm/mem_encrypt.c | 17 | ||||
| -rw-r--r-- | arch/x86/mm/pageattr.c | 3 | ||||
| -rw-r--r-- | arch/x86/mm/tlb.c | 4 |
4 files changed, 24 insertions, 4 deletions
diff --git a/arch/x86/mm/kasan_init_64.c b/arch/x86/mm/kasan_init_64.c index 02c9d7553409..39d4daf5e289 100644 --- a/arch/x86/mm/kasan_init_64.c +++ b/arch/x86/mm/kasan_init_64.c @@ -87,7 +87,7 @@ static struct notifier_block kasan_die_notifier = { void __init kasan_early_init(void) { int i; - pteval_t pte_val = __pa_nodebug(kasan_zero_page) | __PAGE_KERNEL; + pteval_t pte_val = __pa_nodebug(kasan_zero_page) | __PAGE_KERNEL | _PAGE_ENC; pmdval_t pmd_val = __pa_nodebug(kasan_zero_pte) | _KERNPG_TABLE; pudval_t pud_val = __pa_nodebug(kasan_zero_pmd) | _KERNPG_TABLE; p4dval_t p4d_val = __pa_nodebug(kasan_zero_pud) | _KERNPG_TABLE; @@ -153,7 +153,7 @@ void __init kasan_init(void) */ memset(kasan_zero_page, 0, PAGE_SIZE); for (i = 0; i < PTRS_PER_PTE; i++) { - pte_t pte = __pte(__pa(kasan_zero_page) | __PAGE_KERNEL_RO); + pte_t pte = __pte(__pa(kasan_zero_page) | __PAGE_KERNEL_RO | _PAGE_ENC); set_pte(&kasan_zero_pte[i], pte); } /* Flush TLBs again to be sure that write protection applied. */ diff --git a/arch/x86/mm/mem_encrypt.c b/arch/x86/mm/mem_encrypt.c index 3ac6f99b095c..f973d3dc3802 100644 --- a/arch/x86/mm/mem_encrypt.c +++ b/arch/x86/mm/mem_encrypt.c @@ -12,6 +12,7 @@ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/mm.h> /* * Since SME related variables are set early in the boot process they must @@ -21,6 +22,22 @@ unsigned long sme_me_mask __section(.data) = 0; EXPORT_SYMBOL_GPL(sme_me_mask); +void __init sme_early_init(void) +{ + unsigned int i; + + if (!sme_me_mask) + return; + + early_pmd_flags = __sme_set(early_pmd_flags); + + __supported_pte_mask = __sme_set(__supported_pte_mask); + + /* Update the protection map with memory encryption mask */ + for (i = 0; i < ARRAY_SIZE(protection_map); i++) + protection_map[i] = pgprot_encrypted(protection_map[i]); +} + void __init sme_encrypt_kernel(void) { } diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c index 757b0bcdf712..7e2d6c0a64c4 100644 --- a/arch/x86/mm/pageattr.c +++ b/arch/x86/mm/pageattr.c @@ -2020,6 +2020,9 @@ int kernel_map_pages_in_pgd(pgd_t *pgd, u64 pfn, unsigned long address, if (!(page_flags & _PAGE_RW)) cpa.mask_clr = __pgprot(_PAGE_RW); + if (!(page_flags & _PAGE_ENC)) + cpa.mask_clr = pgprot_encrypted(cpa.mask_clr); + cpa.mask_set = __pgprot(_PAGE_PRESENT | page_flags); retval = __change_page_attr_set_clr(&cpa, 0); diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index 2c1b8881e9d3..593d2f76a54c 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -115,7 +115,7 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next, */ this_cpu_write(cpu_tlbstate.ctxs[0].tlb_gen, next_tlb_gen); - write_cr3(__pa(next->pgd)); + write_cr3(__sme_pa(next->pgd)); trace_tlb_flush(TLB_FLUSH_ON_TASK_SWITCH, TLB_FLUSH_ALL); } @@ -157,7 +157,7 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next, this_cpu_write(cpu_tlbstate.ctxs[0].ctx_id, next->context.ctx_id); this_cpu_write(cpu_tlbstate.ctxs[0].tlb_gen, next_tlb_gen); this_cpu_write(cpu_tlbstate.loaded_mm, next); - write_cr3(__pa(next->pgd)); + write_cr3(__sme_pa(next->pgd)); trace_tlb_flush(TLB_FLUSH_ON_TASK_SWITCH, TLB_FLUSH_ALL); } |