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x86/kexec: Remove walk_iomem_res() call with GART type 

There is no longer any driver inserting a "GART" region in the
kernel since

  707d4eefbd ("Revert "[PATCH] Insert GART region into resource map"").

Remove the call to walk_iomem_res() with "GART" type, its
callback function, and GART-specific variables set by the
callback.

Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Dave Young <dyoung@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Chun-Yi <joeyli.kernel@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Lee, Chun-Yi <joeyli.kernel@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Minfei Huang <mnfhuang@gmail.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Takao Indoh <indou.takao@jp.fujitsu.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: kexec@lists.infradead.org
Cc: linux-arch@vger.kernel.org
Cc: linux-mm <linux-mm@kvack.org>
Link: http://lkml.kernel.org/r/1453841853-11383-16-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Toshi Kani 2016-01-26 21:57:31 +01:00 committed by Ingo Molnar
parent f0f4711aa1
commit f296f26349
1 changed files with 1 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
arch/x86/kernel/crash.c
View File

@ -57,10 +57,9 @@ struct crash_elf_data {
struct kimage *image;
/*
* Total number of ram ranges we have after various adjustments for
* GART, crash reserved region etc.
* crash reserved region, etc.
*/
unsigned int max_nr_ranges;
unsigned long gart_start, gart_end;
/* Pointer to elf header */
void *ehdr;
@ -201,17 +200,6 @@ static int get_nr_ram_ranges_callback(u64 start, u64 end, void *arg)
return 0;
}
static int get_gart_ranges_callback(u64 start, u64 end, void *arg)
{
struct crash_elf_data *ced = arg;
ced->gart_start = start;
ced->gart_end = end;
/* Not expecting more than 1 gart aperture */
return 1;
}
/* Gather all the required information to prepare elf headers for ram regions */
static void fill_up_crash_elf_data(struct crash_elf_data *ced,
@ -226,22 +214,6 @@ static void fill_up_crash_elf_data(struct crash_elf_data *ced,
ced->max_nr_ranges = nr_ranges;
/*
* We don't create ELF headers for GART aperture as an attempt
* to dump this memory in second kernel leads to hang/crash.
* If gart aperture is present, one needs to exclude that region
* and that could lead to need of extra phdr.
*/
walk_iomem_res("GART", IORESOURCE_MEM, 0, -1,
ced, get_gart_ranges_callback);
/*
* If we have gart region, excluding that could potentially split
* a memory range, resulting in extra header. Account for that.
*/
if (ced->gart_end)
ced->max_nr_ranges++;
/* Exclusion of crash region could split memory ranges */
ced->max_nr_ranges++;
@ -350,13 +322,6 @@ static int elf_header_exclude_ranges(struct crash_elf_data *ced,
return ret;
}
/* Exclude GART region */
if (ced->gart_end) {
ret = exclude_mem_range(cmem, ced->gart_start, ced->gart_end);
if (ret)
return ret;
}
return ret;
}