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authorLinus Torvalds <torvalds@linux-foundation.org>2008-08-16 23:48:45 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2008-08-16 23:48:45 (GMT)
commit9c0d2a20fe331946c1a65a5865faf56e93255c5c (patch)
tree9d47a9239b6249a5dd4244195ec4cc1e55fda3cd /arch/arm/mm
parent5e6b83ed8c00f2e2ae5b2413c5907bed735b600d (diff)
parent66bfa2f03191aec2e2958414b1dfb80a56637133 (diff)
downloadlinux-9c0d2a20fe331946c1a65a5865faf56e93255c5c.tar.xz
Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm: (38 commits) [ARM] 5191/1: ARM: remove CVS keywords [ARM] pxafb: fix the warning of incorrect lccr when lcd_conn is specified [ARM] pxafb: add flag to specify output format on LDD pins when base is RGBT16 [ARM] pxafb: fix the incorrect configuration of GPIO77 as ACBIAS for TFT LCD [ARM] 5198/1: PalmTX: PCMCIA fixes [ARM] Fix a pile of broken watchdog drivers [ARM] update mach-types [ARM] 5196/1: fix inline asm constraints for preload [ARM] 5194/1: update .gitignore [ARM] add proc-macros.S include to proc-arm940 and proc-arm946 [ARM] 5192/1: ARM TLB: add v7wbi_{possible,always}_flags to {possible,always}_tlb_flags [ARM] 5193/1: Wire up missing syscalls [ARM] traps: don't call undef hook functions with spinlock held [ARM] 5183/2: Provide Poodle LoCoMo GPIO names [ARM] dma-mapping: provide sync_range APIs [ARM] dma-mapping: improve type-safeness of DMA translations [ARM] Kirkwood: instantiate the orion_spi driver in the platform code [ARM] prevent crashing when too much RAM installed [ARM] Kirkwood: Instantiate mv_xor driver [ARM] Orion: Instantiate mv_xor driver for 5182 ...
Diffstat (limited to 'arch/arm/mm')
-rw-r--r--arch/arm/mm/cache-feroceon-l2.c2
-rw-r--r--arch/arm/mm/mmu.c50
-rw-r--r--arch/arm/mm/proc-arm940.S1
-rw-r--r--arch/arm/mm/proc-arm946.S1
4 files changed, 53 insertions, 1 deletions
diff --git a/arch/arm/mm/cache-feroceon-l2.c b/arch/arm/mm/cache-feroceon-l2.c
index 20eec4b..7b5a25d 100644
--- a/arch/arm/mm/cache-feroceon-l2.c
+++ b/arch/arm/mm/cache-feroceon-l2.c
@@ -14,7 +14,7 @@
#include <linux/init.h>
#include <asm/cacheflush.h>
-#include <asm/plat-orion/cache-feroceon-l2.h>
+#include <plat/cache-feroceon-l2.h>
/*
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 2d6d682..25d9a11 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -568,6 +568,55 @@ void __init iotable_init(struct map_desc *io_desc, int nr)
create_mapping(io_desc + i);
}
+static int __init check_membank_valid(struct membank *mb)
+{
+ /*
+ * Check whether this memory region has non-zero size.
+ */
+ if (mb->size == 0)
+ return 0;
+
+ /*
+ * Check whether this memory region would entirely overlap
+ * the vmalloc area.
+ */
+ if (phys_to_virt(mb->start) >= VMALLOC_MIN) {
+ printk(KERN_NOTICE "Ignoring RAM at %.8lx-%.8lx "
+ "(vmalloc region overlap).\n",
+ mb->start, mb->start + mb->size - 1);
+ return 0;
+ }
+
+ /*
+ * Check whether this memory region would partially overlap
+ * the vmalloc area.
+ */
+ if (phys_to_virt(mb->start + mb->size) < phys_to_virt(mb->start) ||
+ phys_to_virt(mb->start + mb->size) > VMALLOC_MIN) {
+ unsigned long newsize = VMALLOC_MIN - phys_to_virt(mb->start);
+
+ printk(KERN_NOTICE "Truncating RAM at %.8lx-%.8lx "
+ "to -%.8lx (vmalloc region overlap).\n",
+ mb->start, mb->start + mb->size - 1,
+ mb->start + newsize - 1);
+ mb->size = newsize;
+ }
+
+ return 1;
+}
+
+static void __init sanity_check_meminfo(struct meminfo *mi)
+{
+ int i;
+ int j;
+
+ for (i = 0, j = 0; i < mi->nr_banks; i++) {
+ if (check_membank_valid(&mi->bank[i]))
+ mi->bank[j++] = mi->bank[i];
+ }
+ mi->nr_banks = j;
+}
+
static inline void prepare_page_table(struct meminfo *mi)
{
unsigned long addr;
@@ -753,6 +802,7 @@ void __init paging_init(struct meminfo *mi, struct machine_desc *mdesc)
void *zero_page;
build_mem_type_table();
+ sanity_check_meminfo(mi);
prepare_page_table(mi);
bootmem_init(mi);
devicemaps_init(mdesc);
diff --git a/arch/arm/mm/proc-arm940.S b/arch/arm/mm/proc-arm940.S
index 1a3d63d..551244d 100644
--- a/arch/arm/mm/proc-arm940.S
+++ b/arch/arm/mm/proc-arm940.S
@@ -15,6 +15,7 @@
#include <asm/pgtable-hwdef.h>
#include <asm/pgtable.h>
#include <asm/ptrace.h>
+#include "proc-macros.S"
/* ARM940T has a 4KB DCache comprising 256 lines of 4 words */
#define CACHE_DLINESIZE 16
diff --git a/arch/arm/mm/proc-arm946.S b/arch/arm/mm/proc-arm946.S
index 82d579a..6168c61 100644
--- a/arch/arm/mm/proc-arm946.S
+++ b/arch/arm/mm/proc-arm946.S
@@ -17,6 +17,7 @@
#include <asm/pgtable-hwdef.h>
#include <asm/pgtable.h>
#include <asm/ptrace.h>
+#include "proc-macros.S"
/*
* ARM946E-S is synthesizable to have 0KB to 1MB sized D-Cache,