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authorRusty Russell <rusty@rustcorp.com.au>2008-07-22 15:40:46 +1000
committerIngo Molnar <mingo@elte.hu>2008-07-22 10:41:18 +0200
commitc2e3277f875b83e5adc34e96989d6d87ec5f80f7 (patch)
treec25f6dd50e136d720f8f35d689946b6d256d054b /include/asm-x86/xen/page.h
parent988781dc3e1d9209192b04458d279815923f5e76 (diff)
downloadconfigs-c2e3277f875b83e5adc34e96989d6d87ec5f80f7.tar.gz
x86: fix pte_flags() to only return flags, fix lguest (updated)
(Jeremy said: rusty: use PTE_MASK rusty: use PTE_MASK rusty: use PTE_MASK When I asked: jsgf: does that include the NX flag? He responded eloquently: rusty: use PTE_MASK rusty: use PTE_MASK yes, it's the official constant of masking flags out of ptes ) Change a15af1c9ea2750a9ff01e51615c45950bad8221b 'x86/paravirt: add pte_flags to just get pte flags' removed lguest's private pte_flags() in favor of a generic one. Unfortunately, the generic one doesn't filter out the non-flags bits: this results in lguest creating corrupt shadow page tables and blowing up host memory. Since noone is supposed to use the pfn part of pte_flags(), it seems safest to always do the filtering. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-and-morning-tea-spilled-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/xen/page.h')
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