Commit c0ceb944 authored by Alexander Gordeev's avatar Alexander Gordeev Committed by Vasily Gorbik
Browse files

s390/mm,ptdump: add real memory copy page markers 



Add "Real Memory Copy Area Start" and "Real Memory Copy Area End"
markers that fence the page used for real memory copying.

Signed-off-by: default avatarAlexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent 2f0e8aae

arch/s390/mm/dump_pagetables.c

+7 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ 
#include <asm/abs_lowcore.h>

#include <asm/nospec-branch.h>

#include <asm/sections.h>

#include <asm/maccess.h>



static unsigned long max_addr;
@@ -44,6 +45,8 @@ enum address_markers_idx { 
	MODULES_END_NR,

	ABS_LOWCORE_NR,

	ABS_LOWCORE_END_NR,

	MEMCPY_REAL_NR,

	MEMCPY_REAL_END_NR,

};



static struct addr_marker address_markers[] = {
@@ -71,6 +74,8 @@ static struct addr_marker address_markers[] = { 
	[MODULES_END_NR]	= {0, "Modules Area End"},

	[ABS_LOWCORE_NR]	= {0, "Lowcore Area Start"},

	[ABS_LOWCORE_END_NR]	= {0, "Lowcore Area End"},

	[MEMCPY_REAL_NR]	= {0, "Real Memory Copy Area Start"},

	[MEMCPY_REAL_END_NR]	= {0, "Real Memory Copy Area End"},

	{ -1, NULL }

};
@@ -291,6 +296,8 @@ static int pt_dump_init(void) 
	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[MEMCPY_REAL_NR].start_address = __memcpy_real_area;

	address_markers[MEMCPY_REAL_END_NR].start_address = __memcpy_real_area + PAGE_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;