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. > > kexec needs to know this new type, but I think its build env includes > "/usr/include/asm/e820.h", which is provided by a distribution. On Fedora > 22, kernel-headers-4.0.6-300.fc22.x86_64 is the latest kernel header > package and it will take a while for 4.2 headers. > > How do we handle such kernel header dependency in the kexec build env? > > Thanks, > -Toshi > > > > > > > > > _______________________________________________ > kexec mailing list > kexec at lists.infradead.org > http://lists.infradead.org/mailman/listinfo/kexec
