On Fri, 2015-07-24 at 13:31 +0800, Baoquan He wrote: > On 07/23/15 at 06:26pm, Toshi Kani wrote: > > Hello, > > > > ACPI 6.0 defines a new type in e820, AddressRangePersistentMemory (7), > > for > > NVDIMM. On a system with NVDIMM, kexec displays the following error > > message and sets it to RANGE_RESERVED as the fallback type. > > > > Unknown type (Persistent Memory) while parsing > > /sys/firmware/memmap/34/type. Please report this as bug. Using > > RANGE_RESERVED now. > > > > This new type is defined in "arch/x86/include/uapi/asm/e820.h" in 4.2 > > -rc1 > > as follows. > > > > #define E820_PMEM 7 > > It need be added in struct e820entry:include/x86/x86-linux.h and > memory_range:kexec/kexec.h and their related handling. Could you give > more details about this memory type? I downloaded a ACPI 6.0 spec but > am not familiar with this. Oh, I see. It has a locally defined header. The e820 types are defined in Table 15-312, page 683, of ACPI 6.0. Thanks, -Toshi
