[PATCH 08/16] arm64/kexec: Add core kexec support
panand at redhat.com
Tue Oct 20 01:56:20 PDT 2015
Thanks for the patches.
On 19/10/2015:11:38:53 PM, Geoff Levand wrote:
> +static void soft_restart(unsigned long addr)
> + setup_mm_for_reboot();
> + cpu_soft_restart(virt_to_phys(cpu_reset), addr,
> + is_hyp_mode_available());
So now we do not flush cache for any memory region. Shouldn't we still flush
at least kernel and purgatory segments.
kexec-tools loads a new kernel and purgatory executable. Some of those bits
might still be only in D-cache and we disable D-cache before control is passed
to the purgatory binary. Purgatory and some initial part of kernel code is
executed with D-cache disabled. So, We might land into a situation where correct
code is not executed while D-cache is disabled, no?
More information about the linux-arm-kernel