[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v3 10/10] x86/MSI-X: provide hypercall interface for mask-all control
>>> On 19.06.15 at 15:05, <konrad.wilk@xxxxxxxxxx> wrote: >>And now that I started looking into what it takes to make this >>work, I'm having a deja vu: In order for us to reliably intercept >>all CFG accesses, we need to whitelist the MMCFG pages of >>devices we know we don't care about being written. I.e. we >>need to start out with all of them being read-only. And the >>affected MFNs have to be known before Dom0 maps these >>pages (or else we would have to hunt down all the mappings in >>the page tables, which is nothing I consider even remotely >>reasonable). Yet, and here comes the deja vu, upstream Linux >>_still_ doesn't make use of PHYSDEVOP_pci_mmcfg_reserved. > > Yes it does: > http://lists.xenproject.org/archives/html/xen-devel/2013-11/msg00807.html Oh, sorry - I expected it to live somewhere under arch/x86/. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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