From mboxrd@z Thu Jan 1 00:00:00 1970 From: geoff@infradead.org (Geoff Levand) Date: Tue, 20 Oct 2015 10:19:25 -0700 Subject: [PATCH 08/16] arm64/kexec: Add core kexec support In-Reply-To: <20151020085620.GC31893@dhcppc13.redhat.com> References: <20151020085620.GC31893@dhcppc13.redhat.com> Message-ID: <1445361565.30908.68.camel@infradead.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi, On Tue, 2015-10-20 at 14:26 +0530, Pratyush Anand wrote: > 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. Relevant pages of the kexec list are flushed in the code following the comment 'Invalidate dest page to PoC' of the arm64_relocate_new_kernel routine: The dcache is turned off The page is invalidated to PoC The new page is written -Geoff