There is no longer any driver inserting a "GART" region in the kernel
since 'commit 707d4eefbdb3 ("Revert "[PATCH] Insert GART region into
resource map"")' was made.
Remove the call to walk_iomem_res() with "GART", its callback function,
and GART-specific variables set by the callback.
Cc: Borislav Petkov <bp at alien8.de>
Cc: Dave Young <dyoung at redhat.com>
Cc: Minfei Huang <mhuang at redhat.com>
Cc: x86 at kernel.org
Cc: kexec at lists.infradead.org
Link: http://lkml.kernel.org/r/<20160104110427.GA2965 at dhcp-128-65.nay.redhat.com>
Signed-off-by: Toshi Kani <toshi.kani at hpe.com>
---
arch/x86/kernel/crash.c | 37 +------------------------------------
1 file changed, 1 insertion(+), 36 deletions(-)
diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c
index 082373b..f5069e7 100644
--- a/arch/x86/kernel/crash.c
+++ b/arch/x86/kernel/crash.c
@@ -56,10 +56,9 @@ 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;
@@ -190,17 +189,6 @@ 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,
@@ -215,22 +203,6 @@ 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++;
@@ -339,13 +311,6 @@ 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;
}
