From: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Implement arch specific arch_get_memory_phys_device function and initialize
phys_device for each memory section. That way we finally can tell which
piece of memory belongs to which physical device.
Cc: Dave Hansen <haveblue@xxxxxxxxxx>
Cc: Gerald Schaefer <gerald.schaefer@xxxxxxxxxx>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Signed-off-by: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
---
drivers/s390/char/sclp_cmd.c | 7 +++++++
1 file changed, 7 insertions(+)
--- a/drivers/s390/char/sclp_cmd.c
+++ b/drivers/s390/char/sclp_cmd.c
@@ -704,6 +704,13 @@ int sclp_chp_deconfigure(struct chp_id c
return do_chp_configure(SCLP_CMDW_DECONFIGURE_CHPATH | chpid.id << 8);
}
+int arch_get_memory_phys_device(unsigned long start_pfn)
+{
+ if (!rzm)
+ return 0;
+ return PFN_PHYS(start_pfn) / rzm;
+}
+
struct chp_info_sccb {
struct sccb_header header;
u8 recognized[SCLP_CHP_INFO_MASK_SIZE];
--
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