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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [RFC v2] misc/xenmicrocode: Upload /lib/firmware/<some blob> to the hypervisor
On Fri, Jan 30, 2015 at 1:57 PM, Luis R. Rodriguez <mcgrof@xxxxxxxx> wrote: > On Fri, Jan 30, 2015 at 08:37:33PM +0000, Andrew Cooper wrote: >> The right thing to do is to fix the hypercall implementation, at which >> point the utility below is fine and xc_microcode_update() can be a thing >> wrapper around the hypercall. >> >> The actions Xen needs to take are: >> >> - Copy the buffer into Xen. >> - Scan the buffer for the correct patch >> - Rendezvous all online cpus in an IPI to apply the patch, and keep the >> processors in until all have completed the patch. >> >> The IPI itself probably wants common rendezvous code, and a system >> specific call for application. The system specific call will need to >> adhere to the requirements in the relevant manual. Care will have to be >> taken to avoid deadlocking with the time calibration rendezvous, and >> facilities such as the watchdog might temporally need pausing. >> >> If you feel up to all that, then please go ahead. If not, I will >> attempt to find some copious free time. > > You can have a crack at that. Let me know when the above is ready and I'll > respin. I'd try it but it seems you would spend considerbly less time than > me doing the above. Andrew, wanted to check to see if you have had time to work on the above. Luis _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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