File makedumpfile-always-use-bigger-SECTION_MAP_MASK... of Package makedumpfile

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File makedumpfile-always-use-bigger-SECTION_MAP_MASK.patch of Package makedumpfile

From: Petr Tesarik <ptesarik@suse.com>
Date: Mon, 29 Jan 2018 14:59:28 +0200
Subject: Always use bigger SECTION_MAP_MASK
References: bsc#1066811, bsc#1067703
Upstream: not yet

Since kernel commit 2d070eab2e82 merely reused a previously unused bit, it
is safe to mask it off for all kernel versions, because it had always been
zero (even in kernels < 4.13).

Signed-off-by: Petr Tesarik <ptesarik@suse.com>

---
 makedumpfile.c |    5 +----
 makedumpfile.h |    1 -
 2 files changed, 1 insertion(+), 5 deletions(-)

--- a/makedumpfile.c
+++ b/makedumpfile.c
@@ -3337,10 +3337,7 @@ section_mem_map_addr(unsigned long addr)
 		return NOT_KV_ADDR;
 	}
 	map = ULONG(mem_section + OFFSET(mem_section.section_mem_map));
-	if (info->kernel_version < KERNEL_VERSION(4, 13, 0))
-		map &= SECTION_MAP_MASK_4_12;
-	else
-		map &= SECTION_MAP_MASK;
+	map &= SECTION_MAP_MASK;
 	free(mem_section);
 
 	return map;
--- a/makedumpfile.h
+++ b/makedumpfile.h
@@ -186,7 +186,6 @@ isAnon(unsigned long mapping)
 #define SECTION_NR_TO_ROOT(sec)	((sec) / SECTIONS_PER_ROOT())
 #define SECTION_IS_ONLINE	(1UL<<2)
 #define SECTION_MAP_LAST_BIT	(1UL<<3)
-#define SECTION_MAP_MASK_4_12	(~(SECTION_IS_ONLINE-1))
 #define SECTION_MAP_MASK	(~(SECTION_MAP_LAST_BIT-1))
 #define NR_SECTION_ROOTS()	divideup(num_section, SECTIONS_PER_ROOT())
 #define SECTION_NR_TO_PFN(sec)	((sec) << PFN_SECTION_SHIFT())

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File makedumpfile-always-use-bigger-SECTION_MAP_MASK.patch of Package makedumpfile

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