Date: Wed, 10 Aug 2016 10:43:03 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: John Baldwin <jhb@freebsd.org> Cc: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r303887 - head/tools/tools/dmardump Message-ID: <20160810074303.GC83214@kib.kiev.ua> In-Reply-To: <73543582.oU1jbu7riv@ralph.baldwin.cx> References: <201608091906.u79J65Uq058283@repo.freebsd.org> <73543582.oU1jbu7riv@ralph.baldwin.cx>
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On Tue, Aug 09, 2016 at 02:22:36PM -0700, John Baldwin wrote: > On Tuesday, August 09, 2016 07:06:05 PM John Baldwin wrote: > > Author: jhb > > Date: Tue Aug 9 19:06:05 2016 > > New Revision: 303887 > > URL: https://svnweb.freebsd.org/changeset/base/303887 > > > > Log: > > Add a dmardump utility to dump the VT-d context tables. > > > > This tool parses the ACPI DMAR table looking for DMA remapping devices. > > For each device it walks the root table and any context tables > > referenced to display mapping info for PCI devices. > > > > Note that acpidump -t already parses the info in the ACPI DMAR tables > > directly. This tool examines some of the data structures the DMAR > > remapping engines use to translate DMA requests. > > > > Reviewed by: kib, grehan > > MFC after: 1 month > > Sponsored by: Chelsio Communications > > Differential Revision: https://reviews.freebsd.org/D7444 > > I should have mentioned that this tool only supports "normal" context > entry tables. It does not (yet) support extended context entry > tables. However, neither bhyve nor ACPI_DMAR create extended context > entry tables. I am not aware of existence of hardware supporting the extended context entries. Even Skykale E3 v5 Xeons report ECS == 0.
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