The attached patch adds the capability for dom0 to inject MCA errors into Xen. The basic idea is to add specific MSR values that will be read by the polling code or the #MC handler. On AMD cpus, the MSRs can actually be written, on Intel CPUs, interpose code is used to fake the MSR values. Since actual hardware problems are rare, it''s convenient to be able to test the code like this. We run our testsuite using this code. Others have expressed some interest in this, so that''s why I''m submitting this patch. - Frank _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Frank van der Linden
2009-Mar-16 23:33 UTC
Re: [Xen-devel] [PATCH] MCA injection (debug) code
Frank van der Linden wrote:> The attached patch adds the capability for dom0 to inject MCA errors > into Xen. The basic idea is to add specific MSR values that will be read > by the polling code or the #MC handler. On AMD cpus, the MSRs can > actually be written, on Intel CPUs, interpose code is used to fake the > MSR values. > > Since actual hardware problems are rare, it''s convenient to be able to > test the code like this. We run our testsuite using this code. Others > have expressed some interest in this, so that''s why I''m submitting this > patch. > > - FrankBtw, this patch is on top of the main patch, but since that one is a bit big, it looks like it''s stuck in the mailing list queue (probably waiting for approval). - Frank _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel