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| author |   Alexander Gordeev <agordeev@linux.ibm.com> | 2022-07-20 08:32:13 +0200 |
|---|---|---|
| committer | Alexander Gordeev <agordeev@linux.ibm.com> | 2022-07-28 18:05:24 +0200 |
| commit | e409b7f19172a3c154de62de4baf32a2c25a375a (patch) | |
| tree | b0dfc4c6b80a0165f5023090066016b567c97328 /arch/s390/mm | |
| parent | s390/smp: rework absolute lowcore access (diff) | |
| download | linux-dev-e409b7f19172a3c154de62de4baf32a2c25a375a.tar.xz linux-dev-e409b7f19172a3c154de62de4baf32a2c25a375a.zip | |
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 <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Diffstat (limited to 'arch/s390/mm')
| -rw-r--r-- | arch/s390/mm/dump_pagetables.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/s390/mm/dump_pagetables.c b/arch/s390/mm/dump_pagetables.c index 9f9af5298dd6..393d6ef4589e 100644 --- a/arch/s390/mm/dump_pagetables.c +++ b/arch/s390/mm/dump_pagetables.c @@ -8,6 +8,7 @@ #include <linux/kasan.h> #include <asm/ptdump.h> #include <asm/kasan.h> +#include <asm/abs_lowcore.h> #include <asm/nospec-branch.h> #include <asm/sections.h> @@ -39,6 +40,8 @@ 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[] = { @@ -62,6 +65,8 @@ 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 } }; @@ -278,6 +283,8 @@ static int pt_dump_init(void) address_markers[IDENTITY_AFTER_END_NR].start_address = ident_map_size; 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; |