Re: [RESEND PATCH v5 08/11] ppc64/kexec_file: setup backup region for kdump kernel

2020-07-28 Thread Michael Ellerman
Hari Bathini writes: > diff --git a/arch/powerpc/kexec/file_load_64.c > b/arch/powerpc/kexec/file_load_64.c > index a5c1442590b2..88408b17a7f6 100644 > --- a/arch/powerpc/kexec/file_load_64.c > +++ b/arch/powerpc/kexec/file_load_64.c > @@ -697,6 +699,69 @@ static int update_usable_mem_fdt(void

Re: [RESEND PATCH v5 08/11] ppc64/kexec_file: setup backup region for kdump kernel

2020-07-27 Thread Thiago Jung Bauermann
Hari Bathini writes: > Though kdump kernel boots from loaded address, the first 64KB of it is > copied down to real 0. So, setup a backup region and let purgatory > copy the first 64KB of crashed kernel into this backup region before > booting into kdump kernel. Update reserve map with backup

[RESEND PATCH v5 08/11] ppc64/kexec_file: setup backup region for kdump kernel

2020-07-26 Thread Hari Bathini
Though kdump kernel boots from loaded address, the first 64KB of it is copied down to real 0. So, setup a backup region and let purgatory copy the first 64KB of crashed kernel into this backup region before booting into kdump kernel. Update reserve map with backup region and crashed kernel's