Author: markj Date: Mon Oct 1 14:47:49 2018 New Revision: 339046 URL: https://svnweb.freebsd.org/changeset/base/339046
Log: Count bootstrap data as resident in the kernel pmap. Such data may later be unmapped. This occurs, for example, when a loader-provided microcode update file is discarded. Reviewed by: alc, kib Approved by: re (gjb) Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D17340 Modified: head/sys/amd64/amd64/pmap.c Modified: head/sys/amd64/amd64/pmap.c ============================================================================== --- head/sys/amd64/amd64/pmap.c Mon Oct 1 14:39:59 2018 (r339045) +++ head/sys/amd64/amd64/pmap.c Mon Oct 1 14:47:49 2018 (r339046) @@ -1098,9 +1098,11 @@ pmap_bootstrap(vm_paddr_t *firstaddr) vm_offset_t va; pt_entry_t *pte; uint64_t cr4; + u_long res; int i; KERNend = *firstaddr; + res = atop(KERNend - (vm_paddr_t)kernphys); if (!pti) pg_g = X86_PG_G; @@ -1120,10 +1122,8 @@ pmap_bootstrap(vm_paddr_t *firstaddr) vm_phys_add_seg(KPTphys, KPTphys + ptoa(nkpt)); virtual_avail = (vm_offset_t) KERNBASE + *firstaddr; - virtual_end = VM_MAX_KERNEL_ADDRESS; - /* * Enable PG_G global pages, then switch to the kernel page * table from the bootstrap page table. After the switch, it @@ -1142,6 +1142,7 @@ pmap_bootstrap(vm_paddr_t *firstaddr) /* * Initialize the kernel pmap (which is statically allocated). + * Count bootstrap data as being resident. */ PMAP_LOCK_INIT(kernel_pmap); kernel_pmap->pm_pml4 = (pdp_entry_t *)PHYS_TO_DMAP(KPML4phys); @@ -1149,6 +1150,7 @@ pmap_bootstrap(vm_paddr_t *firstaddr) kernel_pmap->pm_ucr3 = PMAP_NO_CR3; CPU_FILL(&kernel_pmap->pm_active); /* don't allow deactivation */ TAILQ_INIT(&kernel_pmap->pm_pvchunk); + kernel_pmap->pm_stats.resident_count = res; kernel_pmap->pm_flags = pmap_flags; /* _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "[email protected]"
