From 50787755317ddf8c9bb3419a15b87c42237000cb Mon Sep 17 00:00:00 2001 From: Alexander Gordeev Date: Wed, 20 Jul 2022 08:32:13 +0200 Subject: [PATCH] s390/smp,ptdump: add absolute lowcore markers Add "Lowcore Area Start" and "Lowcore Area End" markers that fence pages where absolute lowcore resides. Reviewed-by: Heiko Carstens Signed-off-by: Alexander Gordeev Signed-off-by: Vasily Gorbik --- arch/s390/mm/dump_pagetables.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/s390/mm/dump_pagetables.c b/arch/s390/mm/dump_pagetables.c index 4250861..4e2aa56 100644 --- a/arch/s390/mm/dump_pagetables.c +++ b/arch/s390/mm/dump_pagetables.c @@ -8,6 +8,7 @@ #include #include #include +#include #include #include @@ -41,6 +42,8 @@ enum address_markers_idx { VMALLOC_END_NR, MODULES_NR, MODULES_END_NR, + ABS_LOWCORE_NR, + ABS_LOWCORE_END_NR, }; static struct addr_marker address_markers[] = { @@ -66,6 +69,8 @@ static struct addr_marker address_markers[] = { [VMALLOC_END_NR] = {0, "vmalloc Area End"}, [MODULES_NR] = {0, "Modules Area Start"}, [MODULES_END_NR] = {0, "Modules Area End"}, + [ABS_LOWCORE_NR] = {0, "Lowcore Area Start"}, + [ABS_LOWCORE_END_NR] = {0, "Lowcore Area End"}, { -1, NULL } }; @@ -284,6 +289,8 @@ static int pt_dump_init(void) address_markers[AMODE31_END_NR].start_address = __eamode31; address_markers[MODULES_NR].start_address = MODULES_VADDR; address_markers[MODULES_END_NR].start_address = MODULES_END; + address_markers[ABS_LOWCORE_NR].start_address = __abs_lowcore; + address_markers[ABS_LOWCORE_END_NR].start_address = __abs_lowcore + ABS_LOWCORE_MAP_SIZE; address_markers[VMEMMAP_NR].start_address = (unsigned long) vmemmap; address_markers[VMEMMAP_END_NR].start_address = (unsigned long)vmemmap + vmemmap_size; address_markers[VMALLOC_NR].start_address = VMALLOC_START; -- 2.7.4