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[Xen-devel] [PATCH 1 of 4] x86 shadow: for multi-page shadows, explicitl
| To: | <xen-devel@xxxxxxxxxxxxxxxxxxx> |
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| Subject: | [Xen-devel] [PATCH 1 of 4] x86 shadow: for multi-page shadows, explicitly track the first page |
| From: | Tim Deegan <Tim.Deegan@xxxxxxxxxx> |
| Date: | Fri, 20 Aug 2010 16:58:00 +0100 |
| Delivery-date: | Fri, 20 Aug 2010 09:15:42 -0700 |
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x86 shadow: for multi-page shadows, explicitly track the first page (where the refcounts are) and check that none of the routines that do refcounting ever see the second, third or fourth page. This is just stating and enforcing an existing implicit requirement. Signed-off-by: Tim Deegan <Tim.Deegan@xxxxxxxxxx> 4 files changed, 47 insertions(+), 14 deletions(-) xen/arch/x86/mm/shadow/common.c | 8 +++++- xen/arch/x86/mm/shadow/multi.c | 48 ++++++++++++++++++++++++++++---------- xen/arch/x86/mm/shadow/private.h | 2 + xen/include/asm-x86/mm.h | 3 +-
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