From owner-svn-src-all@freebsd.org Tue Aug 6 03:16:06 2019 Return-Path: Delivered-To: svn-src-all@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id A3F36B47DE; Tue, 6 Aug 2019 03:16:06 +0000 (UTC) (envelope-from jhibbits@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 462fsy4XCPz4XsF; Tue, 6 Aug 2019 03:16:06 +0000 (UTC) (envelope-from jhibbits@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 647E625C38; Tue, 6 Aug 2019 03:16:06 +0000 (UTC) (envelope-from jhibbits@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x763G6Kd043140; Tue, 6 Aug 2019 03:16:06 GMT (envelope-from jhibbits@FreeBSD.org) Received: (from jhibbits@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x763G6la043139; Tue, 6 Aug 2019 03:16:06 GMT (envelope-from jhibbits@FreeBSD.org) Message-Id: <201908060316.x763G6la043139@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: jhibbits set sender to jhibbits@FreeBSD.org using -f From: Justin Hibbits Date: Tue, 6 Aug 2019 03:16:06 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r350622 - head/sys/powerpc/booke X-SVN-Group: head X-SVN-Commit-Author: jhibbits X-SVN-Commit-Paths: head/sys/powerpc/booke X-SVN-Commit-Revision: 350622 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 Aug 2019 03:16:06 -0000 Author: jhibbits Date: Tue Aug 6 03:16:06 2019 New Revision: 350622 URL: https://svnweb.freebsd.org/changeset/base/350622 Log: powerpc/pmap: Simplify Book-E 64-bit page table management There is no need for the 64-bit pmap to have a fixed number of page table buffers. Since the 64-bit pmap has a DMAP, we can effectively have user page tables limited only by total RAM size. Modified: head/sys/powerpc/booke/pmap.c Modified: head/sys/powerpc/booke/pmap.c ============================================================================== --- head/sys/powerpc/booke/pmap.c Tue Aug 6 00:50:25 2019 (r350621) +++ head/sys/powerpc/booke/pmap.c Tue Aug 6 03:16:06 2019 (r350622) @@ -59,8 +59,7 @@ * 0xc000_0000_0000_0000 - 0xcfff_ffff_ffff_ffff : kernel reserved * 0xc000_0000_0000_0000 - endkernel-1 : kernel code & data * endkernel - msgbufp-1 : flat device tree - * msgbufp - ptbl_bufs-1 : message buffer - * ptbl_bufs - kernel_pdir-1 : kernel page tables + * msgbufp - kernel_pdir-1 : message buffer * kernel_pdir - kernel_pp2d-1 : kernel page directory * kernel_pp2d - . : kernel pointers to page directory * pmap_zero_copy_min - crashdumpmap-1 : reserved for page zero/copy @@ -262,11 +261,6 @@ static int pv_entry_count = 0, pv_entry_max = 0, pv_en #define PMAP_SHPGPERPROC 200 #endif -static void ptbl_init(void); -static struct ptbl_buf *ptbl_buf_alloc(void); -static void ptbl_buf_free(struct ptbl_buf *); -static void ptbl_free_pmap_ptbl(pmap_t, pte_t *); - #ifdef __powerpc64__ static pte_t *ptbl_alloc(mmu_t, pmap_t, pte_t **, unsigned int, boolean_t); @@ -274,6 +268,11 @@ static void ptbl_free(mmu_t, pmap_t, pte_t **, unsigne static void ptbl_hold(mmu_t, pmap_t, pte_t **, unsigned int); static int ptbl_unhold(mmu_t, pmap_t, vm_offset_t); #else +static void ptbl_init(void); +static struct ptbl_buf *ptbl_buf_alloc(void); +static void ptbl_buf_free(struct ptbl_buf *); +static void ptbl_free_pmap_ptbl(pmap_t, pte_t *); + static pte_t *ptbl_alloc(mmu_t, pmap_t, unsigned int, boolean_t); static void ptbl_free(mmu_t, pmap_t, unsigned int); static void ptbl_hold(mmu_t, pmap_t, unsigned int); @@ -293,18 +292,15 @@ static void pv_remove(pmap_t, vm_offset_t, vm_page_t); static void booke_pmap_init_qpages(void); -/* Number of kva ptbl buffers, each covering one ptbl (PTBL_PAGES). */ -#ifdef __powerpc64__ -#define PTBL_BUFS (16UL * 16 * 16) -#else -#define PTBL_BUFS (128 * 16) -#endif - struct ptbl_buf { TAILQ_ENTRY(ptbl_buf) link; /* list link */ vm_offset_t kva; /* va of mapping */ }; +#ifndef __powerpc64__ +/* Number of kva ptbl buffers, each covering one ptbl (PTBL_PAGES). */ +#define PTBL_BUFS (128 * 16) + /* ptbl free list and a lock used for access synchronization. */ static TAILQ_HEAD(, ptbl_buf) ptbl_buf_freelist; static struct mtx ptbl_buf_freelist_lock; @@ -314,6 +310,7 @@ static vm_offset_t ptbl_buf_pool_vabase; /* Pointer to ptbl_buf structures. */ static struct ptbl_buf *ptbl_bufs; +#endif #ifdef SMP extern tlb_entry_t __boot_tlb1[]; @@ -574,63 +571,8 @@ tlb1_get_tlbconf(void) static void ptbl_init(void) { - int i; - - mtx_init(&ptbl_buf_freelist_lock, "ptbl bufs lock", NULL, MTX_DEF); - TAILQ_INIT(&ptbl_buf_freelist); - - for (i = 0; i < PTBL_BUFS; i++) { - ptbl_bufs[i].kva = ptbl_buf_pool_vabase + - i * MAX(PTBL_PAGES,PDIR_PAGES) * PAGE_SIZE; - TAILQ_INSERT_TAIL(&ptbl_buf_freelist, &ptbl_bufs[i], link); - } } -/* Get an sf_buf from the freelist. */ -static struct ptbl_buf * -ptbl_buf_alloc(void) -{ - struct ptbl_buf *buf; - - mtx_lock(&ptbl_buf_freelist_lock); - buf = TAILQ_FIRST(&ptbl_buf_freelist); - if (buf != NULL) - TAILQ_REMOVE(&ptbl_buf_freelist, buf, link); - mtx_unlock(&ptbl_buf_freelist_lock); - - return (buf); -} - -/* Return ptbl buff to free pool. */ -static void -ptbl_buf_free(struct ptbl_buf *buf) -{ - mtx_lock(&ptbl_buf_freelist_lock); - TAILQ_INSERT_TAIL(&ptbl_buf_freelist, buf, link); - mtx_unlock(&ptbl_buf_freelist_lock); -} - -/* - * Search the list of allocated ptbl bufs and find on list of allocated ptbls - */ -static void -ptbl_free_pmap_ptbl(pmap_t pmap, pte_t * ptbl) -{ - struct ptbl_buf *pbuf; - - TAILQ_FOREACH(pbuf, &pmap->pm_ptbl_list, link) { - if (pbuf->kva == (vm_offset_t) ptbl) { - /* Remove from pmap ptbl buf list. */ - TAILQ_REMOVE(&pmap->pm_ptbl_list, pbuf, link); - - /* Free corresponding ptbl buf. */ - ptbl_buf_free(pbuf); - - break; - } - } -} - /* Get a pointer to a PTE in a page table. */ static __inline pte_t * pte_find(mmu_t mmu, pmap_t pmap, vm_offset_t va) @@ -648,25 +590,36 @@ pte_find(mmu_t mmu, pmap_t pmap, vm_offset_t va) } /* - * Search the list of allocated pdir bufs and find on list of allocated pdirs + * allocate a page of pointers to page directories, do not preallocate the + * page tables */ -static void -ptbl_free_pmap_pdir(mmu_t mmu, pmap_t pmap, pte_t ** pdir) +static pte_t ** +pdir_alloc(mmu_t mmu, pmap_t pmap, unsigned int pp2d_idx, bool nosleep) { - struct ptbl_buf *pbuf; + vm_page_t m; + pte_t **pdir; + int req; - TAILQ_FOREACH(pbuf, &pmap->pm_pdir_list, link) { - if (pbuf->kva == (vm_offset_t) pdir) { - /* Remove from pmap ptbl buf list. */ - TAILQ_REMOVE(&pmap->pm_pdir_list, pbuf, link); + KASSERT((pdir[pdir_idx] == NULL), + ("%s: valid pdir entry exists!", __func__)); - /* Free corresponding pdir buf. */ - ptbl_buf_free(pbuf); - - break; + req = VM_ALLOC_NOOBJ | VM_ALLOC_WIRED; + while ((m = vm_page_alloc(NULL, pp2d_idx, req)) == NULL) { + PMAP_UNLOCK(pmap); + if (nosleep) { + return (NULL); } + vm_wait(NULL); + PMAP_LOCK(pmap); } + + /* Zero whole ptbl. */ + pdir = (pte_t **)PHYS_TO_DMAP(VM_PAGE_TO_PHYS(m)); + bzero(pdir, PAGE_SIZE); + + return (pdir); } + /* Free pdir pages and invalidate pdir entry. */ static void pdir_free(mmu_t mmu, pmap_t pmap, unsigned int pp2d_idx) @@ -675,7 +628,6 @@ pdir_free(mmu_t mmu, pmap_t pmap, unsigned int pp2d_id vm_paddr_t pa; vm_offset_t va; vm_page_t m; - int i; pdir = pmap->pm_pp2d[pp2d_idx]; @@ -683,16 +635,10 @@ pdir_free(mmu_t mmu, pmap_t pmap, unsigned int pp2d_id pmap->pm_pp2d[pp2d_idx] = NULL; - for (i = 0; i < PDIR_PAGES; i++) { - va = ((vm_offset_t) pdir + (i * PAGE_SIZE)); - pa = pte_vatopa(mmu, kernel_pmap, va); - m = PHYS_TO_VM_PAGE(pa); - vm_page_free_zero(m); - vm_wire_sub(1); - pmap_kremove(va); - } - - ptbl_free_pmap_pdir(mmu, pmap, pdir); + va = (vm_offset_t) pdir; + pa = DMAP_TO_PHYS(va); + m = PHYS_TO_VM_PAGE(pa); + vm_page_free_zero(m); } /* @@ -707,30 +653,20 @@ pdir_unhold(mmu_t mmu, pmap_t pmap, u_int pp2d_idx) pte_t **pdir; vm_paddr_t pa; vm_page_t m; - int i; KASSERT((pmap != kernel_pmap), ("pdir_unhold: unholding kernel pdir!")); pdir = pmap->pm_pp2d[pp2d_idx]; - KASSERT(((vm_offset_t) pdir >= VM_MIN_KERNEL_ADDRESS), - ("pdir_unhold: non kva pdir")); - /* decrement hold count */ - for (i = 0; i < PDIR_PAGES; i++) { - pa = pte_vatopa(mmu, kernel_pmap, - (vm_offset_t) pdir + (i * PAGE_SIZE)); - m = PHYS_TO_VM_PAGE(pa); - m->wire_count--; - } + pa = DMAP_TO_PHYS((vm_offset_t) pdir); + m = PHYS_TO_VM_PAGE(pa); /* - * Free pdir pages if there are no dir entries in this pdir. - * wire_count has the same value for all ptbl pages, so check the - * last page. + * Free pdir page if there are no dir entries in this pdir. */ - if (m->wire_count == 0) { + if (vm_page_unwire_noq(m)) { pdir_free(mmu, pmap, pp2d_idx); return (1); } @@ -744,21 +680,15 @@ pdir_unhold(mmu_t mmu, pmap_t pmap, u_int pp2d_idx) static void pdir_hold(mmu_t mmu, pmap_t pmap, pte_t ** pdir) { - vm_paddr_t pa; vm_page_t m; - int i; KASSERT((pmap != kernel_pmap), ("pdir_hold: holding kernel pdir!")); KASSERT((pdir != NULL), ("pdir_hold: null pdir")); - for (i = 0; i < PDIR_PAGES; i++) { - pa = pte_vatopa(mmu, kernel_pmap, - (vm_offset_t) pdir + (i * PAGE_SIZE)); - m = PHYS_TO_VM_PAGE(pa); - m->wire_count++; - } + m = PHYS_TO_VM_PAGE(DMAP_TO_PHYS((vm_offset_t)pdir)); + vm_page_wire(m); } /* Allocate page table. */ @@ -766,51 +696,29 @@ static pte_t * ptbl_alloc(mmu_t mmu, pmap_t pmap, pte_t ** pdir, unsigned int pdir_idx, boolean_t nosleep) { - vm_page_t mtbl [PTBL_PAGES]; vm_page_t m; - struct ptbl_buf *pbuf; - unsigned int pidx; pte_t *ptbl; - int i, j; int req; KASSERT((pdir[pdir_idx] == NULL), ("%s: valid ptbl entry exists!", __func__)); - pbuf = ptbl_buf_alloc(); - if (pbuf == NULL) - panic("%s: couldn't alloc kernel virtual memory", __func__); - - ptbl = (pte_t *) pbuf->kva; - - for (i = 0; i < PTBL_PAGES; i++) { - pidx = (PTBL_PAGES * pdir_idx) + i; - req = VM_ALLOC_NOOBJ | VM_ALLOC_WIRED; - while ((m = vm_page_alloc(NULL, pidx, req)) == NULL) { - PMAP_UNLOCK(pmap); - rw_wunlock(&pvh_global_lock); - if (nosleep) { - ptbl_free_pmap_ptbl(pmap, ptbl); - for (j = 0; j < i; j++) - vm_page_free(mtbl[j]); - vm_wire_sub(i); - return (NULL); - } - vm_wait(NULL); - rw_wlock(&pvh_global_lock); - PMAP_LOCK(pmap); + req = VM_ALLOC_NOOBJ | VM_ALLOC_WIRED; + while ((m = vm_page_alloc(NULL, pdir_idx, req)) == NULL) { + PMAP_UNLOCK(pmap); + rw_wunlock(&pvh_global_lock); + if (nosleep) { + return (NULL); } - mtbl[i] = m; + vm_wait(NULL); + rw_wlock(&pvh_global_lock); + PMAP_LOCK(pmap); } - /* Mapin allocated pages into kernel_pmap. */ - mmu_booke_qenter(mmu, (vm_offset_t) ptbl, mtbl, PTBL_PAGES); /* Zero whole ptbl. */ - bzero((caddr_t) ptbl, PTBL_PAGES * PAGE_SIZE); + ptbl = (pte_t *)PHYS_TO_DMAP(VM_PAGE_TO_PHYS(m)); + bzero(ptbl, PAGE_SIZE); - /* Add pbuf to the pmap ptbl bufs list. */ - TAILQ_INSERT_TAIL(&pmap->pm_ptbl_list, pbuf, link); - return (ptbl); } @@ -822,7 +730,6 @@ ptbl_free(mmu_t mmu, pmap_t pmap, pte_t ** pdir, unsig vm_paddr_t pa; vm_offset_t va; vm_page_t m; - int i; ptbl = pdir[pdir_idx]; @@ -830,16 +737,10 @@ ptbl_free(mmu_t mmu, pmap_t pmap, pte_t ** pdir, unsig pdir[pdir_idx] = NULL; - for (i = 0; i < PTBL_PAGES; i++) { - va = ((vm_offset_t) ptbl + (i * PAGE_SIZE)); - pa = pte_vatopa(mmu, kernel_pmap, va); - m = PHYS_TO_VM_PAGE(pa); - vm_page_free_zero(m); - vm_wire_sub(1); - pmap_kremove(va); - } - - ptbl_free_pmap_ptbl(pmap, ptbl); + va = (vm_offset_t) ptbl; + pa = DMAP_TO_PHYS(va); + m = PHYS_TO_VM_PAGE(pa); + vm_page_free_zero(m); } /* @@ -852,12 +753,10 @@ static int ptbl_unhold(mmu_t mmu, pmap_t pmap, vm_offset_t va) { pte_t *ptbl; - vm_paddr_t pa; vm_page_t m; u_int pp2d_idx; pte_t **pdir; u_int pdir_idx; - int i; pp2d_idx = PP2D_IDX(va); pdir_idx = PDIR_IDX(va); @@ -868,30 +767,15 @@ ptbl_unhold(mmu_t mmu, pmap_t pmap, vm_offset_t va) pdir = pmap->pm_pp2d[pp2d_idx]; ptbl = pdir[pdir_idx]; - KASSERT(((vm_offset_t) ptbl >= VM_MIN_KERNEL_ADDRESS), - ("ptbl_unhold: non kva ptbl")); - /* decrement hold count */ - for (i = 0; i < PTBL_PAGES; i++) { - pa = pte_vatopa(mmu, kernel_pmap, - (vm_offset_t) ptbl + (i * PAGE_SIZE)); - m = PHYS_TO_VM_PAGE(pa); - m->wire_count--; - } + m = PHYS_TO_VM_PAGE(DMAP_TO_PHYS((vm_offset_t) ptbl)); /* * Free ptbl pages if there are no pte entries in this ptbl. * wire_count has the same value for all ptbl pages, so check the * last page. */ - if (m->wire_count == 0) { - /* A pair of indirect entries might point to this ptbl page */ -#if 0 - tlb_flush_entry(pmap, va & ~((2UL * PAGE_SIZE_1M) - 1), - TLB_SIZE_1M, MAS6_SIND); - tlb_flush_entry(pmap, (va & ~((2UL * PAGE_SIZE_1M) - 1)) | PAGE_SIZE_1M, - TLB_SIZE_1M, MAS6_SIND); -#endif + if (vm_page_unwire_noq(m)) { ptbl_free(mmu, pmap, pdir, pdir_idx); pdir_unhold(mmu, pmap, pp2d_idx); return (1); @@ -906,10 +790,8 @@ ptbl_unhold(mmu_t mmu, pmap_t pmap, vm_offset_t va) static void ptbl_hold(mmu_t mmu, pmap_t pmap, pte_t ** pdir, unsigned int pdir_idx) { - vm_paddr_t pa; pte_t *ptbl; vm_page_t m; - int i; KASSERT((pmap != kernel_pmap), ("ptbl_hold: holding kernel ptbl!")); @@ -918,12 +800,8 @@ ptbl_hold(mmu_t mmu, pmap_t pmap, pte_t ** pdir, unsig KASSERT((ptbl != NULL), ("ptbl_hold: null ptbl")); - for (i = 0; i < PTBL_PAGES; i++) { - pa = pte_vatopa(mmu, kernel_pmap, - (vm_offset_t) ptbl + (i * PAGE_SIZE)); - m = PHYS_TO_VM_PAGE(pa); - m->wire_count++; - } + m = PHYS_TO_VM_PAGE(DMAP_TO_PHYS((vm_offset_t) ptbl)); + vm_page_wire(m); } #else @@ -1328,51 +1206,6 @@ pte_remove(mmu_t mmu, pmap_t pmap, vm_offset_t va, u_i } /* - * allocate a page of pointers to page directories, do not preallocate the - * page tables - */ -static pte_t ** -pdir_alloc(mmu_t mmu, pmap_t pmap, unsigned int pp2d_idx, bool nosleep) -{ - vm_page_t mtbl [PDIR_PAGES]; - vm_page_t m; - struct ptbl_buf *pbuf; - pte_t **pdir; - unsigned int pidx; - int i; - int req; - - pbuf = ptbl_buf_alloc(); - - if (pbuf == NULL) - panic("%s: couldn't alloc kernel virtual memory", __func__); - - /* Allocate pdir pages, this will sleep! */ - for (i = 0; i < PDIR_PAGES; i++) { - pidx = (PDIR_PAGES * pp2d_idx) + i; - req = VM_ALLOC_NOOBJ | VM_ALLOC_WIRED; - while ((m = vm_page_alloc(NULL, pidx, req)) == NULL) { - PMAP_UNLOCK(pmap); - vm_wait(NULL); - PMAP_LOCK(pmap); - } - mtbl[i] = m; - } - - /* Mapin allocated pages into kernel_pmap. */ - pdir = (pte_t **) pbuf->kva; - pmap_qenter((vm_offset_t) pdir, mtbl, PDIR_PAGES); - - /* Zero whole pdir. */ - bzero((caddr_t) pdir, PDIR_PAGES * PAGE_SIZE); - - /* Add pdir to the pmap pdir bufs list. */ - TAILQ_INSERT_TAIL(&pmap->pm_pdir_list, pbuf, link); - - return pdir; -} - -/* * Insert PTE for a given page and virtual address. */ static int @@ -1485,8 +1318,8 @@ kernel_pte_alloc(vm_offset_t data_end, vm_offset_t add for (j = PDIR_IDX(va + (i * PAGE_SIZE * PDIR_NENTRIES * PTBL_NENTRIES)); j < PDIR_NENTRIES; j++) { kernel_pmap->pm_pp2d[i + PP2D_IDX(va)][j] = - (pte_t *)(pdir + (kernel_pdirs * PAGE_SIZE * PDIR_PAGES) + - (((i * PDIR_NENTRIES) + j) * PAGE_SIZE * PTBL_PAGES)); + (pte_t *)(pdir + (kernel_pdirs * PAGE_SIZE) + + (((i * PDIR_NENTRIES) + j) * PAGE_SIZE)); } } @@ -1764,6 +1597,7 @@ mmu_booke_bootstrap(mmu_t mmu, vm_offset_t start, vm_o data_end = round_page(data_end); +#ifndef __powerpc64__ /* Allocate space for ptbl_bufs. */ ptbl_bufs = (struct ptbl_buf *)data_end; data_end += sizeof(struct ptbl_buf) * PTBL_BUFS; @@ -1771,6 +1605,7 @@ mmu_booke_bootstrap(mmu_t mmu, vm_offset_t start, vm_o (uintptr_t)ptbl_bufs, data_end); data_end = round_page(data_end); +#endif /* Allocate PTE tables for kernel KVA. */ kernel_pdir = data_end; @@ -1799,12 +1634,12 @@ mmu_booke_bootstrap(mmu_t mmu, vm_offset_t start, vm_o * all range up to the currently calculated 'data_end' is covered. */ dpcpu_init(dpcpu, 0); - memset((void *)ptbl_bufs, 0, sizeof(struct ptbl_buf) * PTBL_SIZE); #ifdef __powerpc64__ memset((void *)kernel_pdir, 0, kernel_pdirs * PDIR_PAGES * PAGE_SIZE + kernel_ptbls * PTBL_PAGES * PAGE_SIZE); #else + memset((void *)ptbl_bufs, 0, sizeof(struct ptbl_buf) * PTBL_SIZE); memset((void *)kernel_pdir, 0, kernel_ptbls * PTBL_PAGES * PAGE_SIZE); #endif @@ -1829,11 +1664,13 @@ mmu_booke_bootstrap(mmu_t mmu, vm_offset_t start, vm_o mtx_init(&zero_page_mutex, "mmu_booke_zero_page", NULL, MTX_DEF); mtx_init(©_page_mutex, "mmu_booke_copy_page", NULL, MTX_DEF); +#ifndef __powerpc64__ /* Allocate KVA space for ptbl bufs. */ ptbl_buf_pool_vabase = virtual_avail; virtual_avail += PTBL_BUFS * PTBL_PAGES * PAGE_SIZE; debugf("ptbl_buf_pool_vabase = 0x%"PRI0ptrX" end = 0x%"PRI0ptrX"\n", ptbl_buf_pool_vabase, virtual_avail); +#endif /* Calculate corresponding physical addresses for the kernel region. */ phys_kernelend = kernload + kernsize;