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RE: [Xen-devel] [PATCH] ignore guest writes to read only memory regions
| To: | "Li, Xin" <xin.li@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | RE: [Xen-devel] [PATCH] ignore guest writes to read only memory regions or memory holes in EPT |
| From: | "Li, Xin" <xin.li@xxxxxxxxx> |
| Date: | Mon, 26 Oct 2009 16:45:48 +0800 |
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| Delivery-date: | Mon, 26 Oct 2009 01:47:28 -0700 |
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| Thread-topic: | [Xen-devel] [PATCH] ignore guest writes to read only memory regions or memory holes in EPT |
>ignore guest writes to read only memory regions or memory holes in EPT. Keir, For reads from memory holes, hw returns a value with all bits set. Xen should emulate this behavior, and this needs to change Xen x86 instruction emulation code. do we already have such logic in Xen? In early days, such reads were sent to Qemu, which returns 0xFFFFFFFF, 0xFFFF or 0xFF. Thanks! -Xin _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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