Hi, On 10/31/2014 04:15 PM, Adrian McMenamin wrote: > Looking at this code at line 78 (in 3.17 kernel) it has: > > mfs r1, rmsr > msrclr r8, 0 > cmpu r8, r8, r1 > > But as far as I can see the result of that comparison is never used - the > comments state it is to test if the msrclr instruction is enabled.
r8 is used when machine_early_init() is called. r8 is 4th register which is used for passing args based on Microblaze reference manual. Thanks, Michal -- Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91 w: www.monstr.eu p: +42-0-721842854 Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/ Maintainer of Linux kernel - Xilinx Zynq ARM architecture Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform
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