On 13/06/16 07:03, Leendert van Doorn wrote:
UEFI timer ticks vary per implementation. Fortunately there is an architectural timer protocol through which we can query the tick period. This patch removes the hard coded tick setting for EFI and replaces it with code that sets it dynamically.
We do not want to run the timer callback at the maximum possible rate, since that is incredibly wasteful of CPU.
The current code uses bs->SetTimer() to start a low-overhead timer callback running at 20Hz, which is all we need to handle retransmission timeouts. (The equivalent timer under BIOS runs at 18.2Hz.)
Michael _______________________________________________ ipxe-devel mailing list ipxe-devel@lists.ipxe.org https://lists.ipxe.org/mailman/listinfo.cgi/ipxe-devel
