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[Xen-devel] [PATCH] SVM: handle page faults in emaulted instruction fetc
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
|---|---|
| Subject: | [Xen-devel] [PATCH] SVM: handle page faults in emaulted instruction fetches |
| From: | Tim Deegan <Tim.Deegan@xxxxxxxxxx> |
| Date: | Mon, 10 Mar 2008 13:36:47 +0000 |
| Delivery-date: | Mon, 10 Mar 2008 06:41:09 -0700 |
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| User-agent: | Mutt/1.5.17 (2007-11-01) |
Deal with failures in hvm_copy_from_guest_virt when fetching instructions in the various SVM emulation paths. Since we know that the instruction was fetchable by the hardware, we can usually just return from the VMEXIT and try again; whatever caused us to fail will cause the hardware to fail next time and we'll get the correct exit code. Signed-off-by: Tim Deegan <Tim.Deegan@xxxxxxxxxx> -- Tim Deegan <Tim.Deegan@xxxxxxxxxx> Principal Software Engineer, Citrix Systems (R&D) Ltd. [Company #02300071, SL9 0DZ, UK.]
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