[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 12/06/15 03:30, Luis R. Rodriguez wrote: > 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. Sadly no - I have not had time. ~Andrew _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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