4384995b3d
Added patch from panand which was accepted by upstream but not merged in upstream yet. kexec-tools-2.0.15-makedumpfile-fix-SECTION_MAP_MASK-for-kernel-bigger-than-4.13.patch
67 lines
2.6 KiB
Diff
67 lines
2.6 KiB
Diff
From: Pratyush Anand <panand@redhat.com>
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To: ats-kumagai@wm.jp.nec.com
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Subject: [Makedumpfile PATCH v2] Fix SECTION_MAP_MASK for kernel >= v.13
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Date: Thu, 17 Aug 2017 09:16:59 +0530
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Cc: Pratyush Anand <panand@redhat.com>, dyoung@redhat.com,
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kexec@lists.infradead.org, bhe@redhat.com
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MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit
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Content-Type: text/plain; charset=utf-8
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commit 2d070eab2e82 "mm: consider zone which is not fully populated to
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have holes" added a new flag SECTION_IS_ONLINE and therefore
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SECTION_MAP_MASK has been changed. We are not able to find correct
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mem_map in makedumpfile for kernel version v4.13-rc1 and onward because
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of the above kernel change.
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This patch fixes the MASK value keeping the code backward compatible
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Signed-off-by: Pratyush Anand <panand@redhat.com>
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---
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v1->v2: Improved kernel_version comparison to take care of stable kernel
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versions as well.
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makedumpfile.c | 5 ++++-
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makedumpfile.h | 4 +++-
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2 files changed, 7 insertions(+), 2 deletions(-)
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diff --git kexec-tools-2.0.15/makedumpfile-1.6.2/makedumpfile.c kexec-tools-2.0.15.new/makedumpfile-1.6.2/makedumpfile.c
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index 30230a15a2e7..c975651ca357 100644
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--- kexec-tools-2.0.15/makedumpfile-1.6.2/makedumpfile.c
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+++ kexec-tools-2.0.15.new/makedumpfile-1.6.2/makedumpfile.c
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@@ -3304,7 +3304,10 @@ section_mem_map_addr(unsigned long addr)
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return NOT_KV_ADDR;
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}
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map = ULONG(mem_section + OFFSET(mem_section.section_mem_map));
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- map &= SECTION_MAP_MASK;
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+ if (info->kernel_version < KERNEL_VERSION(4, 13, 0))
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+ map &= SECTION_MAP_MASK_4_12;
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+ else
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+ map &= SECTION_MAP_MASK;
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free(mem_section);
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return map;
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diff --git kexec-tools-2.0.15/makedumpfile-1.6.2/makedumpfile.h kexec-tools-2.0.15.new/makedumpfile-1.6.2/makedumpfile.h
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index 8a05794843fb..322f28c632b0 100644
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--- kexec-tools-2.0.15/makedumpfile-1.6.2/makedumpfile.h
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+++ kexec-tools-2.0.15.new/makedumpfile-1.6.2/makedumpfile.h
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@@ -183,7 +183,9 @@ isAnon(unsigned long mapping)
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#define SECTIONS_PER_ROOT() (info->sections_per_root)
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#define SECTION_ROOT_MASK() (SECTIONS_PER_ROOT() - 1)
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#define SECTION_NR_TO_ROOT(sec) ((sec) / SECTIONS_PER_ROOT())
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-#define SECTION_MAP_LAST_BIT (1UL<<2)
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+#define SECTION_IS_ONLINE (1UL<<2)
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+#define SECTION_MAP_LAST_BIT (1UL<<3)
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+#define SECTION_MAP_MASK_4_12 (~(SECTION_IS_ONLINE-1))
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#define SECTION_MAP_MASK (~(SECTION_MAP_LAST_BIT-1))
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#define NR_SECTION_ROOTS() divideup(num_section, SECTIONS_PER_ROOT())
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#define SECTION_NR_TO_PFN(sec) ((sec) << PFN_SECTION_SHIFT())
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--
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2.9.4
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