On Wed, Jun 23, 2021 at 03:25:10PM +0800, Kefeng Wang wrote: > > > On 2021/6/23 15:12, Greg KH wrote: > > On Wed, Jun 23, 2021 at 02:59:59PM +0800, Kefeng Wang wrote: > > > Hi Greg, > > > > > > There are two more patches about the ZONE_DMA[32] changes, > > > > What ZONE_DMA changes? > > See the subject, [PATCH stable v5.10 0/7] arm64: Default to 32-bit wide > ZONE_DMA, We asked the ARM64 ZONE_DMA change backport before, link[1] The subject doesn't help much, sorry, what commit does this refer to? What happened to it? Was it accepted or rejected? > > > especially the > > > second one, both them need be backported, thanks. > > > > Backported to where? > > stable 5.10 Why? > > > 791ab8b2e3db - arm64: Ignore any DMA offsets in the max_zone_phys() > > > calculation > > > 2687275a5843 - arm64: Force NO_BLOCK_MAPPINGS if crashkernel reservation is > > > required > > > > Have you tried these patches? Where do they need to be applied to? > > Yes, we tested it, without them, especially the second one, we will > meet crash when using kexec boot, also there is discussion in [2] > and [3] from Catalin. These [] do not seem to be links :( thanks, greg k-h
