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openSUSE:Leap:15.5:Update
xen.33142
65eee676-x86-mm-last-L1e-detection-in-mxml.patch
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File 65eee676-x86-mm-last-L1e-detection-in-mxml.patch of Package xen.33142
# Commit 7c81558208de7858251b62f168a449be84305595 # Date 2024-03-11 11:09:42 +0000 # Author Roger Pau Monne <roger.pau@citrix.com> # Committer Andrew Cooper <andrew.cooper3@citrix.com> x86/mm: fix detection of last L1 entry in modify_xen_mappings_lite() The current logic to detect when to switch to the next L1 table is incorrectly using l2_table_offset() in order to notice when the last entry on the current L1 table has been reached. It should instead use l1_table_offset() to check whether the index has wrapped to point to the first entry, and so the next L1 table should be used. Fixes: 8676092a0f16 ('x86/livepatch: Fix livepatch application when CET is active') Signed-off-by: Roger Pau Monné <roger.pau@citrix.com> Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com> --- a/xen/arch/x86/mm.c +++ b/xen/arch/x86/mm.c @@ -5963,7 +5963,7 @@ void init_or_livepatch modify_xen_mappin v += 1UL << L1_PAGETABLE_SHIFT; - if ( l2_table_offset(v) == 0 ) + if ( l1_table_offset(v) == 0 ) break; }
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