On Thursday 07 May 2015 09:55 AM, AKASHI Takahiro wrote: > Geoff, Pratyush > > On 05/07/2015 02:37 AM, Pratyush Anand wrote: >> Hi Geoff, >> >> On Wednesday 06 May 2015 10:35 PM, Geoff Levand wrote: >>> Your 2 minutes seems like a long time. Is this seen on other platforms? >> >> At least it is seen on two different HW platforms I had tested with. I >> do not know about other. >> >> It would be nice if somebody else who is using kexec on HW platform >> can report their execution time. > > On my HW, it took about 42secs before showing extra boot messages after > "I'm in purgatory." > It would also depend on the size of different segments (mainly kernel and initrd) on which sha256 is calculated. What are the size of binaries in your case? In my case: segment[0].memsz = 0x10e0000 // kernel segment[1].memsz = 0x1910000 // initrd segment[2].memsz = 0x10000 // dtb segment[3].memsz = 0x40000 // purgatory, not included in sha256 segment[4].memsz = 0x10000 // elf core hdr @Geoff: Do you see any specific side effect for enabling D-cache in purgatory, other than the fact that it increases size of purgatory? May be we can keep an user option to select/not select d-cache enabling.
