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Re: [Xen-devel] [PATCH] x86: don't map more than the allocated space for
| To: | Jan Beulich <JBeulich@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH] x86: don't map more than the allocated space for frame_table |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Wed, 20 May 2009 06:56:04 -0700 |
| Cc: | |
| Delivery-date: | Wed, 20 May 2009 06:56:35 -0700 |
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| Thread-topic: | [Xen-devel] [PATCH] x86: don't map more than the allocated space for frame_table |
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On 20/05/2009 06:28, "Jan Beulich" <JBeulich@xxxxxxxxxx> wrote: > Also, make frame_table a 'mostly read' variable. Actually, I don't > really understand why this has to be a variable on x86 at all - > address calculations involving it could be cheaper if this was just > a #define. Perhaps kexec is the only thing that needs this to be a > variable, but if that indeed is the only reason, kexec should define > its own static variable. Would it really be much cheaper? Pointer load versus a 64-bit constant? If you're sure it would be an improvement I would take a patch. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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