[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Libxc code to get MTRR memory type for physical address pa
At 17:13 +0200 on 13 Dec (1355418813), Razvan Cojocaru wrote: > Hello, > > what would be the libxc-based equivalent of get_mtrr_type(struct > mtrr_state *m, paddr_t pa) (from xen/arch/x86/hvm/mtrr.c)? > > I've searched the source code and found this: > > struct hvm_hw_mtrr { > #define MTRR_VCNT 8 > #define NUM_FIXED_MSR 11 > uint64_t msr_pat_cr; > /* mtrr physbase & physmask msr pair*/ > uint64_t msr_mtrr_var[MTRR_VCNT*2]; > uint64_t msr_mtrr_fixed[NUM_FIXED_MSR]; > uint64_t msr_mtrr_cap; > uint64_t msr_mtrr_def_type; > }; > > in xen/include/public/arch-x86/hvm/save.h. I can retrieve that using > xc_domain_hvm_getcontext_partial(), but what would the the best way to > get the uint8_t result, for a given 'pa', that get_mtrr_type() returns? I think you'd have to write some code to decode the MTRRs, by copying the logic that Xen uses in get_mtrr_type (or by following the processor manuals). If you do, please send a patch to add it to libxc for the next person! Tim. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |