Date: Sat, 20 Mar 2010 15:23:06 +0000 (UTC) From: Nathan Whitehorn <nwhitehorn@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r205381 - stable/8/sys/powerpc/aim Message-ID: <201003201523.o2KFN6OG011094@svn.freebsd.org>
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Author: nwhitehorn Date: Sat Mar 20 15:23:06 2010 New Revision: 205381 URL: http://svn.freebsd.org/changeset/base/205381 Log: MFC r204296: Provide an implementation of pmap_dev_direct_mapped() on OEA64. This is required in order to be able to mmap the running kernel, which is turn required to avoid fstat returning gibberish. Modified: stable/8/sys/powerpc/aim/mmu_oea64.c Directory Properties: stable/8/sys/ (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) stable/8/sys/dev/xen/xenpci/ (props changed) Modified: stable/8/sys/powerpc/aim/mmu_oea64.c ============================================================================== --- stable/8/sys/powerpc/aim/mmu_oea64.c Sat Mar 20 15:21:13 2010 (r205380) +++ stable/8/sys/powerpc/aim/mmu_oea64.c Sat Mar 20 15:23:06 2010 (r205381) @@ -2408,7 +2408,22 @@ moea64_clear_bit(vm_page_t m, u_int64_t boolean_t moea64_dev_direct_mapped(mmu_t mmu, vm_offset_t pa, vm_size_t size) { - return (EFAULT); + struct pvo_entry *pvo; + vm_offset_t ppa; + int error = 0; + + PMAP_LOCK(kernel_pmap); + for (ppa = pa & ~ADDR_POFF; ppa < pa + size; ppa += PAGE_SIZE) { + pvo = moea64_pvo_find_va(kernel_pmap, ppa, NULL); + if (pvo == NULL || + (pvo->pvo_pte.lpte.pte_lo & LPTE_RPGN) != ppa) { + error = EFAULT; + break; + } + } + PMAP_UNLOCK(kernel_pmap); + + return (error); } boolean_t
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