Hi Simon, Chen, On Mon, Apr 8, 2019 at 5:36 PM Simon Horman <horms@xxxxxxxxxxxx> wrote: > > On Mon, Apr 08, 2019 at 05:22:39PM +0800, Chen Zhou wrote: > > 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. > > > > This patch paves the way for the use of arm64 reserving crashkernel > > above 4G. The details are as below: > > Link: https://lore.kernel.org/linux-arm-kernel/20190403030546.23718-1-chenzhou10@xxxxxxxxxx/T/#t > > > > Signed-off-by: Chen Zhou <chenzhou10@xxxxxxxxxx> > > Thanks, applied. Sorry, but I think the kernel patch which adds this functionality is still under discussion and review (see [1]). May be we can wait for the kernel change to be first discussed and absorbed and then integrate this patch in kexec-tools. What do you think? [1]. https://lkml.org/lkml/2019/4/2/1173 Thanks, Bhupesh _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
