On 07/07/24 at 08:54pm, Sourabh Jain wrote: > Kernel commit 79365026f869 (crash: add a new kexec flag for hotplug > support) has introduced a new kexec flag to generalize hotplug support. > The newly introduced kexec flags for hotplug allow architectures to > exclude all the required kexec segments from SHA calculation so that > the kernel can update them on hotplug events. This was not possible > earlier with the KEXEC_UPDATE_ELFCOREHDR kexec flags since it was added > only for the elfcorehdr segment. > > To enable architectures to control the list of kexec segments to exclude > when hotplug support is enabled, add a new architecture-specific > function named arch_do_exclude_segment. During the SHA calculation, this > function gets called to let the architecture decide whether a specific > kexec segment should be considered for SHA calculation or not. > > Note: To avoid breaking backward compatibility, the new kexec flag > KEXEC_CRASH_HOTPLUG_SUPPORT is not used for x86 for now. > > Cc: Aditya Gupta <adityag@xxxxxxxxxxxxx> > Cc: Baoquan He <bhe@xxxxxxxxxx> > Cc: Coiby Xu <coxu@xxxxxxxxxx> > Cc: Hari Bathini <hbathini@xxxxxxxxxxxxx> > Cc: Mahesh Salgaonkar <mahesh@xxxxxxxxxxxxx> > Cc: Simon Horman <horms@xxxxxxxxxx> > Signed-off-by: Sourabh Jain <sourabhjain@xxxxxxxxxxxxx> > --- > kexec/arch/arm/kexec-arm.c | 5 ++++ > kexec/arch/arm64/kexec-arm64.c | 5 ++++ > kexec/arch/cris/kexec-cris.c | 4 +++ > kexec/arch/hppa/kexec-hppa.c | 5 ++++ > kexec/arch/i386/kexec-x86.c | 8 ++++++ > kexec/arch/ia64/kexec-ia64.c | 4 +++ > kexec/arch/loongarch/kexec-loongarch.c | 5 ++++ > kexec/arch/m68k/kexec-m68k.c | 5 ++++ > kexec/arch/mips/kexec-mips.c | 4 +++ > kexec/arch/ppc/kexec-ppc.c | 4 +++ > kexec/arch/ppc64/kexec-ppc64.c | 5 ++++ > kexec/arch/s390/kexec-s390.c | 5 ++++ > kexec/arch/sh/kexec-sh.c | 5 ++++ > kexec/arch/x86_64/kexec-x86_64.c | 8 ++++++ > kexec/kexec-syscall.h | 1 + > kexec/kexec.c | 40 ++++++++++++++++++++++---- > kexec/kexec.h | 2 ++ > 17 files changed, 109 insertions(+), 6 deletions(-) LGTM, Acked-by: Baoquan He <bhe@xxxxxxxxxx> _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
