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DISCONTINUED:openSUSE:11.1
xen
18420-x86-page-type-preemptible-fix.patch
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File 18420-x86-page-type-preemptible-fix.patch of Package xen
# HG changeset patch # User Keir Fraser <keir.fraser@citrix.com> # Date 1220450168 -3600 # Node ID c9db93b0660ae644491c862e47744a2349ba630f # Parent 1e98ea5c860438a227e135701e6439b22826f52f x86: Fix interpretation of get_l*e_linear_pagetable(). Broken by get_page_type() preemption patch (c/s 18412). Signed-off-by: Keir Fraser <keir.fraser@citrix.com> Index: xen-3.3.0-testing/xen/arch/x86/mm.c =================================================================== --- xen-3.3.0-testing.orig/xen/arch/x86/mm.c +++ xen-3.3.0-testing/xen/arch/x86/mm.c @@ -762,9 +762,8 @@ get_page_from_l2e( rc = get_page_and_type_from_pagenr( l2e_get_pfn(l2e), PGT_l1_page_table, d, 0); - if ( unlikely(rc) && rc != -EAGAIN && - get_l2_linear_pagetable(l2e, pfn, d) ) - rc = -EINVAL; + if ( unlikely(rc == -EINVAL) && get_l2_linear_pagetable(l2e, pfn, d) ) + rc = 0; return rc; } @@ -788,9 +787,8 @@ get_page_from_l3e( rc = get_page_and_type_from_pagenr( l3e_get_pfn(l3e), PGT_l2_page_table, d, preemptible); - if ( unlikely(rc) && rc != -EAGAIN && rc != -EINTR && - get_l3_linear_pagetable(l3e, pfn, d) ) - rc = -EINVAL; + if ( unlikely(rc == -EINVAL) && get_l3_linear_pagetable(l3e, pfn, d) ) + rc = 0; return rc; } @@ -814,9 +812,8 @@ get_page_from_l4e( rc = get_page_and_type_from_pagenr( l4e_get_pfn(l4e), PGT_l3_page_table, d, preemptible); - if ( unlikely(rc) && rc != -EAGAIN && rc != -EINTR && - get_l4_linear_pagetable(l4e, pfn, d) ) - rc = -EINVAL; + if ( unlikely(rc == -EINVAL) && get_l4_linear_pagetable(l4e, pfn, d) ) + rc = 0; return rc; }
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