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Re: [Xen-devel] TLB flushing
| To: | Ky Srinivasan <ksrinivasan@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] TLB flushing |
| From: | Keir Fraser <keir@xxxxxxxxxxxxx> |
| Date: | Tue, 23 Jan 2007 19:09:58 +0000 |
| Delivery-date: | Tue, 23 Jan 2007 11:09:45 -0800 |
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| Thread-index: | Acc/IhLJUZOjNKsVEdubbQAX8io7RQ== |
| Thread-topic: | [Xen-devel] TLB flushing |
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On 23/1/07 18:28, "Ky Srinivasan" <ksrinivasan@xxxxxxxxxx> wrote: > Looking at the do_mmuext_op(), it looks like we are not handling shadow mode > uniformly : > For instance, for MMUEXT_INVLPG_LOCAL case, we deal with the case where the > domain may be operating under shadow mode; however, for other flush options we > don't deal with the case where the domain may be operating in shadow mode. > What is the rationale for this? Most (or perhaps even all) of the references to shadow mode in arch/x86/mm.c are to handle PV guests running in shadow_mode_translate and/or shadow_mode_refcounts. Those modes were never really a well-integrated or -tested configuration for PV guests and are now deprecated (e.g., reference to shadow mode in MMUEXT_INVLPG_LOCAL will be removed sometime soon). Really most of arch/x86/mm.c needs to be renamed to arch/x86/mm/pv.c... -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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