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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Xen optimization
On Tue, 11 Dec 2018, Julien Grall wrote: > On 11/12/2018 18:39, Stefano Stabellini wrote: > > On Tue, 11 Dec 2018, Julien Grall wrote: > > > On 10/12/2018 12:23, Andrii Anisov wrote: > > > > Hello Julien, > > > > > > > > On 10.12.18 13:54, Julien Grall wrote: > > > > > What are the numbers without Xen? > > > > Good question. Didn't try. At least putchar should be implemented for > > > > that. > > > > > > I think we need the baremetal numbers to be able to compare properly the > > > old > > > and new vGIC. > > > > That might prove very hard for Andrii to do because TBM is made to run > > on Xilinx hardware and Xen VMs only. It is probably lacking necessary > > drivers to run on other boards natively. > > Really? What sort of platform specific driver do you need? Shouldn't the UART > be sufficient? Yes, I think the uart driver could be sufficient, but it has only the Xilinx uart, the pl011 and the Xen emergency console. If I recall correctly, Renesas needs a different driver. Any platform specific initialization would also need to be added to it. > When you speak about interrupt latency, you need to compare to baremetal. > Otherwise it has no meaning at all. So what is your solution? When I used it, I ran on Xilinx hardware, that was my solution :-D Andrii would have to port a uart driver to it. Maybe the early_printk trivial driver could be easy enough to port. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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