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Date: Thu, 13 Nov 2008 16:35:45 -0800 From: Jeremy Fitzhardinge <jeremy@...p.org> To: Mark McLoughlin <markmc@...hat.com> CC: Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org, Xen-devel <xen-devel@...ts.xensource.com>, the arch/x86 maintainers <x86@...nel.org>, Ian Campbell <ian.campbell@...rix.com> Subject: Re: [PATCH 25 of 38] xen mtrr: Add mtrr_ops support for Xen mtrr Mark McLoughlin wrote: > On Thu, 2008-11-13 at 11:10 -0800, Jeremy Fitzhardinge wrote: > > >> diff --git a/arch/x86/kernel/cpu/mtrr/xen.c b/arch/x86/kernel/cpu/mtrr/xen.c >> new file mode 100644 >> --- /dev/null >> +++ b/arch/x86/kernel/cpu/mtrr/xen.c >> @@ -0,0 +1,59 @@ >> > ... > >> + >> +/* DOM0 TODO: Need to fill in the remaining mtrr methods to have full >> + * working userland mtrr support. */ >> +static struct mtrr_ops xen_mtrr_ops = { >> + .vendor = X86_VENDOR_UNKNOWN, >> +// .set = xen_set_mtrr, >> +// .get = xen_get_mtrr, >> + .get_free_region = generic_get_free_region, >> +// .validate_add_page = xen_validate_add_page, >> + .have_wrcomb = positive_have_wrcomb, >> + .use_intel_if = 0, >> + .num_var_ranges = xen_num_var_ranges, >> +}; >> > > ... > > I'm vague on the details now, but looking back at the dom0 patch set > here: > > http://git.et.redhat.com/?p=linux-2.6-dom0-pvops.git;a=shortlog;h=55abc194080b5cf31cd66f5e35e8e5c5af2aa927 > > I see we did have a bunch more mtrr work e.g. fixing the TODO above: > > http://git.et.redhat.com/?p=linux-2.6-dom0-pvops.git;a=commitdiff;h=93f779bf3d79f28d0933bfbc53f7b8c5b6496081 > Yes, the mtrr changes are incomplete. I started on them as much as necessary to get things booting, and then left the rest to revisit. It's not a particularly pretty part of the kernel, and so I was hoping some magic beautification fairy would visit it before I needed to touch it more... J -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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