On 08/16/2013 03:57 AM, Dai Yan wrote: > sorry about that I didn't express explicity. > what I wrote is cp15 c15 regsiter . > And I found that it cannont be written on my adndale board .
Those would be implementation defined registers which I don't have much experience with. My only suggestions would be to check for hypervisor traps and read and re-read the chip-specific and architecture documentation. Christopher > 2013/8/16 Dai Yan <kanshu...@gmail.com <mailto:kanshu...@gmail.com>> > > Could someone help me with that? > Previously i always do writing the register from kernel modules but always > failed. > > > > 2013/8/16 Dai Yan <kanshu...@gmail.com <mailto:kanshu...@gmail.com>> > > it seems that the all of cp15 registers cannot be written, > I try write it from kernel space(module). > > Best Regards > > > 2013/8/15 Christopher Covington <c...@codeaurora.org > <mailto:c...@codeaurora.org>> > > Hi Dai, > > On 08/15/2013 08:15 AM, Dai Yan wrote: > > Hello, > > > > Maybe it's a stupid question. > > > > I want to modify cp15 register. > > Which register? > > > but I found that the register cannont be written,it can ony be > read. > > Is this from user space or kernel space? > > > Could someone help me with that? > > > > distribute version: ubnuntu linaro 13.07 arndale board > > > > kernel:3.10.2+ > > Christopher -- Employee of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by the Linux Foundation. _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
