Hari Bathini <hbathini at linux.vnet.ibm.com> writes: > fadump supports specifying memory to reserve for fadump's crash kernel > with fadump_reserve_mem kernel parameter. This parameter currently > supports passing a fixed memory size, like fadump_reserve_mem=<size> > only. This patch aims to add support for other syntaxes like range-based > memory size <range1>:<size1>[,<range2>:<size2>,<range3>:<size3>,...] > which allows using the same parameter to boot the kernel with different > system RAM sizes. > > As crashkernel parameter already supports the above mentioned syntaxes, > this patch deprecates fadump_reserve_mem parameter and reuses crashkernel > parameter instead, to specify memory for fadump's crash kernel memory > reservation as well. If any offset is provided in crashkernel parameter, > it will be ignored in case of fadump, as fadump reserves memory at end > of RAM. > > Advantages using crashkernel parameter instead of fadump_reserve_mem > parameter are one less kernel parameter overall, code reuse and support > for multiple syntaxes to specify memory. > > Suggested-by: Dave Young <dyoung at redhat.com> > Signed-off-by: Hari Bathini <hbathini at linux.vnet.ibm.com> > Reviewed-by: Mahesh Salgaonkar <mahesh at linux.vnet.ibm.com> > --- > arch/powerpc/kernel/fadump.c | 23 ++++++++++------------- > 1 file changed, 10 insertions(+), 13 deletions(-) Acked-by: Michael Ellerman <mpe at ellerman.id.au> cheers
