On Mon, Jan 10, 2022 at 06:20:08PM +0800, Zhen Lei wrote: > From: Chen Zhou <chenzhou10@xxxxxxxxxx> > > When crashkernel is reserved above 4G in memory, kernel should > reserve some amount of low memory for swiotlb and some DMA buffers. > So there may be two crash kernel regions, one is below 4G, the other > is above 4G. > > Currently, there is only one crash kernel region on arm64, and pass > "linux,usable-memory-range = <BASE SIZE>" property to crash dump > kernel. > Now, we pass "linux,usable-memory-range = <BASE1 SIZE1 BASE2 SIZE2>" > to crash dump kernel to support two crash kernel regions and load crash > kernel high. Make the low memory region as the second range "BASE2 SIZE2" > to keep compatibility with existing user-space and older kdump kernels. > > Signed-off-by: Chen Zhou <chenzhou10@xxxxxxxxxx> > Co-developed-by: Zhen Lei <thunder.leizhen@xxxxxxxxxx> > Signed-off-by: Zhen Lei <thunder.leizhen@xxxxxxxxxx> Thanks, applied. _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
