Date: Thu, 25 Feb 2010 03:49:18 +0000 (UTC) From: Nathan Whitehorn <nwhitehorn@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r204296 - head/sys/powerpc/aim Message-ID: <201002250349.o1P3nIYS094166@svn.freebsd.org>
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Author: nwhitehorn Date: Thu Feb 25 03:49:17 2010 New Revision: 204296 URL: http://svn.freebsd.org/changeset/base/204296 Log: 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: head/sys/powerpc/aim/mmu_oea64.c Modified: head/sys/powerpc/aim/mmu_oea64.c ============================================================================== --- head/sys/powerpc/aim/mmu_oea64.c Thu Feb 25 00:46:51 2010 (r204295) +++ head/sys/powerpc/aim/mmu_oea64.c Thu Feb 25 03:49:17 2010 (r204296) @@ -2410,7 +2410,22 @@ 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); } /*
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