Hi Simon, On Sat, Jul 18, 2015 at 10:37 PM, Simon Glass <[email protected]> wrote: > Hi Bin, > > On 15 July 2015 at 02:23, Bin Meng <[email protected]> wrote: >> The existing MP initialization process works on QEMU multicore, >> except that we need increase delay time for BSP to wait APs to >> show up online. Use a Kconfig option to control the delay time >> factor to the normal one. >> >> Signed-off-by: Bin Meng <[email protected]> >> --- >> >> arch/x86/cpu/mp_init.c | 4 ++++ >> arch/x86/cpu/qemu/Kconfig | 11 +++++++++++ >> arch/x86/dts/qemu-x86_i440fx.dts | 20 ++++++++++++++++++++ >> arch/x86/dts/qemu-x86_q35.dts | 20 ++++++++++++++++++++ >> configs/qemu-x86_defconfig | 4 ++++ >> doc/README.x86 | 5 +++++ >> 6 files changed, 64 insertions(+) > > Why does qemu need a longer delay? Can we put this in as a property of > the /cpus node instead? >
I have no idea. I suspect it is caused by QEMU's multicore simulation is not real paralleled. Yep, we can define a parameter in the /cpus node to control this. Regards, Bin _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
