diff options
Diffstat (limited to 'system/xen/xsa/xsa345-0002-x86-mm-Refactor-modify_xen_mappings-to-have-one-exit.patch')
-rw-r--r-- | system/xen/xsa/xsa345-0002-x86-mm-Refactor-modify_xen_mappings-to-have-one-exit.patch | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/system/xen/xsa/xsa345-0002-x86-mm-Refactor-modify_xen_mappings-to-have-one-exit.patch b/system/xen/xsa/xsa345-0002-x86-mm-Refactor-modify_xen_mappings-to-have-one-exit.patch deleted file mode 100644 index 836bed681a..0000000000 --- a/system/xen/xsa/xsa345-0002-x86-mm-Refactor-modify_xen_mappings-to-have-one-exit.patch +++ /dev/null @@ -1,68 +0,0 @@ -From 9f6f35b833d295acaaa2d8ff8cf309bf688cfd50 Mon Sep 17 00:00:00 2001 -From: Wei Liu <wei.liu2@citrix.com> -Date: Sat, 11 Jan 2020 21:57:42 +0000 -Subject: [PATCH 2/3] x86/mm: Refactor modify_xen_mappings to have one exit - path - -We will soon need to perform clean-ups before returning. - -No functional change. - -This is part of XSA-345. - -Reported-by: Hongyan Xia <hongyxia@amazon.com> -Signed-off-by: Wei Liu <wei.liu2@citrix.com> -Signed-off-by: Hongyan Xia <hongyxia@amazon.com> -Signed-off-by: George Dunlap <george.dunlap@citrix.com> -Acked-by: Jan Beulich <jbeulich@suse.com> ---- - xen/arch/x86/mm.c | 12 +++++++++--- - 1 file changed, 9 insertions(+), 3 deletions(-) - -diff --git a/xen/arch/x86/mm.c b/xen/arch/x86/mm.c -index 133a393875..af726d3274 100644 ---- a/xen/arch/x86/mm.c -+++ b/xen/arch/x86/mm.c -@@ -5570,6 +5570,7 @@ int modify_xen_mappings(unsigned long s, unsigned long e, unsigned int nf) - l1_pgentry_t *pl1e; - unsigned int i; - unsigned long v = s; -+ int rc = -ENOMEM; - - /* Set of valid PTE bits which may be altered. */ - #define FLAGS_MASK (_PAGE_NX|_PAGE_RW|_PAGE_PRESENT) -@@ -5611,7 +5612,8 @@ int modify_xen_mappings(unsigned long s, unsigned long e, unsigned int nf) - /* PAGE1GB: shatter the superpage and fall through. */ - pl2e = alloc_xen_pagetable(); - if ( !pl2e ) -- return -ENOMEM; -+ goto out; -+ - for ( i = 0; i < L2_PAGETABLE_ENTRIES; i++ ) - l2e_write(pl2e + i, - l2e_from_pfn(l3e_get_pfn(*pl3e) + -@@ -5666,7 +5668,8 @@ int modify_xen_mappings(unsigned long s, unsigned long e, unsigned int nf) - /* PSE: shatter the superpage and try again. */ - pl1e = alloc_xen_pagetable(); - if ( !pl1e ) -- return -ENOMEM; -+ goto out; -+ - for ( i = 0; i < L1_PAGETABLE_ENTRIES; i++ ) - l1e_write(&pl1e[i], - l1e_from_pfn(l2e_get_pfn(*pl2e) + i, -@@ -5795,7 +5798,10 @@ int modify_xen_mappings(unsigned long s, unsigned long e, unsigned int nf) - flush_area(NULL, FLUSH_TLB_GLOBAL); - - #undef FLAGS_MASK -- return 0; -+ rc = 0; -+ -+ out: -+ return rc; - } - - #undef flush_area --- -2.25.1 - |