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| author | Kairui Song <kasong@redhat.com> | 2020-03-30 21:15:44 +0300 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-04-15 12:21:54 +0300 |
| commit | 4c5b566c2193e2af82c891daa5303c8899e61044 (patch) | |
| tree | 7a9f80ce06ab29ce6ed704f4112106b378f143b4 /arch/x86/kernel/e820.c | |
| parent | 2fa9a3cf3055db07a4835eb7bd48c648cb17ac26 (diff) | |
| download | linux-4c5b566c2193e2af82c891daa5303c8899e61044.tar.xz | |
crash_dump: Remove no longer used saved_max_pfn
saved_max_pfn was originally introduced in commit
92aa63a5a1bf ("[PATCH] kdump: Retrieve saved max pfn")
It used to make sure that the user does not try to read the physical memory
beyond saved_max_pfn. But since commit
921d58c0e699 ("vmcore: remove saved_max_pfn check")
it's no longer used for the check. This variable doesn't have any users
anymore so just remove it.
[ bp: Drop the Calgary IOMMU reference from the commit message. ]
Signed-off-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Link: https://lkml.kernel.org/r/20200330181544.1595733-1-kasong@redhat.com
Diffstat (limited to 'arch/x86/kernel/e820.c')
| -rw-r--r-- | arch/x86/kernel/e820.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c index c5399e80c59c..4d13c57f370a 100644 --- a/arch/x86/kernel/e820.c +++ b/arch/x86/kernel/e820.c @@ -910,14 +910,6 @@ static int __init parse_memmap_one(char *p) return -EINVAL; if (!strncmp(p, "exactmap", 8)) { -#ifdef CONFIG_CRASH_DUMP - /* - * If we are doing a crash dump, we still need to know - * the real memory size before the original memory map is - * reset. - */ - saved_max_pfn = e820__end_of_ram_pfn(); -#endif e820_table->nr_entries = 0; userdef = 1; return 0; |