amd64: implement a pmap_shootept() for non-MP kernels.

Simplifies some of the recent INVEPT changes and mirrors the design
of other pmap tlb shootdown functions that provide simplified non-MP
implementations.

ok mlarkin@

diff --git a/sys/arch/amd64/amd64/pmap.c b/sys/arch/amd64/amd64/pmap.c
index ceef0b2..35af9d1 100644 (file)
--- a/sys/arch/amd64/amd64/pmap.c
+++ b/sys/arch/amd64/amd64/pmap.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: pmap.c,v 1.176 2024/09/26 21:55:42 dv Exp $   */
+/*     $OpenBSD: pmap.c,v 1.177 2024/10/02 18:18:27 dv Exp $   */
 /*     $NetBSD: pmap.c,v 1.3 2003/05/08 18:13:13 thorpej Exp $ */
 
 /*
@@ -2468,9 +2468,7 @@ 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);
 
-#ifdef MULTIPROCESSOR
        pmap_shootept(pmap, 1);
-#endif /* MULTIPROCESSOR */
 
        mtx_leave(&pmap->pm_mtx);
 
@@ -3518,4 +3516,22 @@ pmap_tlb_shoottlb(struct pmap *pm, int shootself)
                }
        }
 }
+
+#if NVMM > 0
+void
+pmap_shootept(struct pmap *pm, int shootself)
+{
+       struct cpu_info *self = curcpu();
+       struct vmx_invept_descriptor vid;
+
+       KASSERT(pmap_is_ept(pm));
+
+       if (shootself && (self->ci_flags & CPUF_VMM)) {
+               vid.vid_eptp = pm->eptp;
+               vid.vid_reserved = 0;
+               invept(self->ci_vmm_cap.vcc_vmx.vmx_invept_mode, &vid);
+       }
+}
+#endif /* NVMM > 0 */
+
 #endif /* MULTIPROCESSOR */