Date: Mon, 31 Dec 2018 18:05:49 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r342653 - head/sys/i386/i386 Message-ID: <201812311805.wBVI5nMb000959@repo.freebsd.org>
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Author: kib Date: Mon Dec 31 18:05:48 2018 New Revision: 342653 URL: https://svnweb.freebsd.org/changeset/base/342653 Log: Update comments: paging is initialized in pmap_cold(). MFC after: 3 days Sponsored by: The FreeBSD Foundation Modified: head/sys/i386/i386/pmap.c Modified: head/sys/i386/i386/pmap.c ============================================================================== --- head/sys/i386/i386/pmap.c Mon Dec 31 16:01:22 2018 (r342652) +++ head/sys/i386/i386/pmap.c Mon Dec 31 18:05:48 2018 (r342653) @@ -569,9 +569,9 @@ pmap_cold(void) /* * Bootstrap the system enough to run with virtual memory. * - * On the i386 this is called after mapping has already been enabled - * in locore.s with the page table created in pmap_cold(), - * and just syncs the pmap module with what has already been done. + * On the i386 this is called after pmap_cold() created intial + * kernel page table and enabled paging, and just syncs the pmap + * module with what has already been done. */ void pmap_bootstrap(vm_paddr_t firstaddr) @@ -594,11 +594,12 @@ pmap_bootstrap(vm_paddr_t firstaddr) vm_phys_add_seg(KPTphys, KPTphys + ptoa(nkpt)); /* - * Initialize the first available kernel virtual address. However, - * using "firstaddr" may waste a few pages of the kernel virtual - * address space, because locore may not have mapped every physical - * page that it allocated. Preferably, locore would provide a first - * unused virtual address in addition to "firstaddr". + * Initialize the first available kernel virtual address. + * However, using "firstaddr" may waste a few pages of the + * kernel virtual address space, because pmap_cold() may not + * have mapped every physical page that it allocated. + * Preferably, pmap_cold() would provide a first unused + * virtual address in addition to "firstaddr". */ virtual_avail = (vm_offset_t)firstaddr; virtual_end = VM_MAX_KERNEL_ADDRESS; @@ -665,7 +666,7 @@ pmap_bootstrap(vm_paddr_t firstaddr) /* * KPTmap is used by pmap_kextract(). * - * KPTmap is first initialized by locore. However, that initial + * KPTmap is first initialized by pmap_cold(). However, that initial * KPTmap can only support NKPT page table pages. Here, a larger * KPTmap is created that can support KVA_PAGES page table pages. */
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