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
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=339046
@ -1098,9 +1098,11 @@ pmap_bootstrap(vm_paddr_t *firstaddr)
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vm_offset_t va;
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pt_entry_t *pte;
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uint64_t cr4;
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u_long res;
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int i;
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KERNend = *firstaddr;
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res = atop(KERNend - (vm_paddr_t)kernphys);
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if (!pti)
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pg_g = X86_PG_G;
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@ -1120,10 +1122,8 @@ pmap_bootstrap(vm_paddr_t *firstaddr)
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vm_phys_add_seg(KPTphys, KPTphys + ptoa(nkpt));
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virtual_avail = (vm_offset_t) KERNBASE + *firstaddr;
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virtual_end = VM_MAX_KERNEL_ADDRESS;
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/*
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* Enable PG_G global pages, then switch to the kernel page
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* table from the bootstrap page table. After the switch, it
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@ -1142,6 +1142,7 @@ pmap_bootstrap(vm_paddr_t *firstaddr)
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/*
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* Initialize the kernel pmap (which is statically allocated).
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* Count bootstrap data as being resident.
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*/
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PMAP_LOCK_INIT(kernel_pmap);
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kernel_pmap->pm_pml4 = (pdp_entry_t *)PHYS_TO_DMAP(KPML4phys);
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@ -1149,6 +1150,7 @@ pmap_bootstrap(vm_paddr_t *firstaddr)
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kernel_pmap->pm_ucr3 = PMAP_NO_CR3;
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CPU_FILL(&kernel_pmap->pm_active); /* don't allow deactivation */
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TAILQ_INIT(&kernel_pmap->pm_pvchunk);
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kernel_pmap->pm_stats.resident_count = res;
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kernel_pmap->pm_flags = pmap_flags;
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/*
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