diff options
Diffstat (limited to 'sys/arch/amd64')
| -rw-r--r-- | sys/arch/amd64/amd64/pmap.c | 76 |
1 files changed, 40 insertions, 36 deletions
diff --git a/sys/arch/amd64/amd64/pmap.c b/sys/arch/amd64/amd64/pmap.c index 413a69c52b2..cf8e59287e4 100644 --- a/sys/arch/amd64/amd64/pmap.c +++ b/sys/arch/amd64/amd64/pmap.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pmap.c,v 1.171 2024/08/08 15:57:22 dv Exp $ */ +/* $OpenBSD: pmap.c,v 1.172 2024/08/29 20:13:42 dv Exp $ */ /* $NetBSD: pmap.c,v 1.3 2003/05/08 18:13:13 thorpej Exp $ */ /* @@ -334,9 +334,11 @@ static int pmap_is_active(struct pmap *, struct cpu_info *); paddr_t pmap_map_ptes(struct pmap *); struct pv_entry *pmap_remove_pv(struct vm_page *, struct pmap *, vaddr_t); void pmap_do_remove(struct pmap *, vaddr_t, vaddr_t, int); +#if NVMM > 0 void pmap_remove_ept(struct pmap *, vaddr_t, vaddr_t); void pmap_do_remove_ept(struct pmap *, vaddr_t); int pmap_enter_ept(struct pmap *, vaddr_t, paddr_t, vm_prot_t); +#endif /* NVMM > 0 */ int pmap_remove_pte(struct pmap *, struct vm_page *, pt_entry_t *, vaddr_t, int, struct pv_entry **); void pmap_remove_ptes(struct pmap *, struct vm_page *, vaddr_t, @@ -1783,9 +1785,11 @@ pmap_remove_pte(struct pmap *pmap, struct vm_page *ptp, pt_entry_t *pte, void pmap_remove(struct pmap *pmap, vaddr_t sva, vaddr_t eva) { +#if NVMM > 0 if (pmap->pm_type == PMAP_TYPE_EPT) pmap_remove_ept(pmap, sva, eva); else +#endif /* NVMM > 0 */ pmap_do_remove(pmap, sva, eva, PMAP_REMOVE_ALL); } @@ -2415,13 +2419,43 @@ pmap_enter_special(vaddr_t va, paddr_t pa, vm_prot_t prot) DPRINTF("%s: setting PTE[%lld] = 0x%llx\n", __func__, l1idx, pd[l1idx]); } +#if NVMM > 0 +/* + * pmap_convert + * + * Converts 'pmap' to the new 'mode'. + * + * Parameters: + * pmap: the pmap to convert + * mode: the new mode (see pmap.h, PMAP_TYPE_xxx) + */ +void +pmap_convert(struct pmap *pmap, int mode) +{ + pt_entry_t *pte; + + mtx_enter(&pmap->pm_mtx); + pmap->pm_type = mode; + + if (mode == PMAP_TYPE_EPT) { + /* Clear PML4 */ + pte = (pt_entry_t *)pmap->pm_pdir; + memset(pte, 0, PAGE_SIZE); + + /* Give back the meltdown pdir */ + if (pmap->pm_pdir_intel != NULL) { + pool_put(&pmap_pdp_pool, pmap->pm_pdir_intel); + pmap->pm_pdir_intel = NULL; + } + } + mtx_leave(&pmap->pm_mtx); +} + void pmap_remove_ept(struct pmap *pmap, vaddr_t sgpa, vaddr_t egpa) { vaddr_t v; -#if NVMM > 0 struct vmx_invept_descriptor vid; -#endif /* NVMM > 0 */ mtx_enter(&pmap->pm_mtx); @@ -2430,7 +2464,6 @@ pmap_remove_ept(struct pmap *pmap, vaddr_t sgpa, vaddr_t egpa) for (v = sgpa; v < egpa + PAGE_SIZE; v += PAGE_SIZE) pmap_do_remove_ept(pmap, v); -#if NVMM > 0 if (pmap->eptp != 0) { memset(&vid, 0, sizeof(vid)); vid.vid_eptp = pmap->eptp; @@ -2438,7 +2471,6 @@ pmap_remove_ept(struct pmap *pmap, vaddr_t sgpa, vaddr_t egpa) vid.vid_eptp); invept(IA32_VMX_INVEPT_SINGLE_CTX, &vid); } -#endif /* NVMM > 0 */ mtx_leave(&pmap->pm_mtx); } @@ -2702,6 +2734,7 @@ unlock: return ret; } +#endif /* NVMM > 0 */ /* * pmap_enter: enter a mapping into a pmap @@ -2723,8 +2756,10 @@ pmap_enter(struct pmap *pmap, vaddr_t va, paddr_t pa, vm_prot_t prot, int flags) int error, shootself; paddr_t scr3; +#if NVMM > 0 if (pmap->pm_type == PMAP_TYPE_EPT) return pmap_enter_ept(pmap, va, pa, prot); +#endif /* NVMM > 0 */ KASSERT(!(wc && nocache)); pa &= PMAP_PA_MASK; @@ -3147,37 +3182,6 @@ pmap_steal_memory(vsize_t size, vaddr_t *start, vaddr_t *end) return (va); } -/* - * pmap_convert - * - * Converts 'pmap' to the new 'mode'. - * - * Parameters: - * pmap: the pmap to convert - * mode: the new mode (see pmap.h, PMAP_TYPE_xxx) - */ -void -pmap_convert(struct pmap *pmap, int mode) -{ - pt_entry_t *pte; - - mtx_enter(&pmap->pm_mtx); - pmap->pm_type = mode; - - if (mode == PMAP_TYPE_EPT) { - /* Clear PML4 */ - pte = (pt_entry_t *)pmap->pm_pdir; - memset(pte, 0, PAGE_SIZE); - - /* Give back the meltdown pdir */ - if (pmap->pm_pdir_intel != NULL) { - pool_put(&pmap_pdp_pool, pmap->pm_pdir_intel); - pmap->pm_pdir_intel = NULL; - } - } - mtx_leave(&pmap->pm_mtx); -} - #ifdef MULTIPROCESSOR /* * Locking for tlb shootdown. |