The patch titled
SPARC64: SPARSEMEM_VMEMMAP support
has been removed from the -mm tree. Its filename was
sparc64-sparsemem_vmemmap-support.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: SPARC64: SPARSEMEM_VMEMMAP support
From: David Miller <davem@xxxxxxxxxxxxx>
[apw@xxxxxxxxxxxx: style fixups]
[apw@xxxxxxxxxxxx: vmemmap sparc64: convert to new config options]
Signed-off-by: Andy Whitcroft <apw@xxxxxxxxxxxx>
Acked-by: Mel Gorman <mel@xxxxxxxxx>
Acked-by: Christoph Lameter <clameter@xxxxxxx>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/sparc64/Kconfig | 2 -
arch/sparc64/kernel/ktlb.S | 16 +++++++++
arch/sparc64/mm/init.c | 52 ++++++++++++++++++++++++++++++++
include/asm-sparc64/pgtable.h | 3 +
4 files changed, 72 insertions(+), 1 deletion(-)
diff -puN arch/sparc64/Kconfig~sparc64-sparsemem_vmemmap-support arch/sparc64/Kconfig
--- a/arch/sparc64/Kconfig~sparc64-sparsemem_vmemmap-support
+++ a/arch/sparc64/Kconfig
@@ -240,10 +240,10 @@ config ARCH_SELECT_MEMORY_MODEL
config ARCH_SPARSEMEM_ENABLE
def_bool y
+ select SPARSEMEM_VMEMMAP_ENABLE
config ARCH_SPARSEMEM_DEFAULT
def_bool y
- select SPARSEMEM_STATIC
source "mm/Kconfig"
diff -puN arch/sparc64/kernel/ktlb.S~sparc64-sparsemem_vmemmap-support arch/sparc64/kernel/ktlb.S
--- a/arch/sparc64/kernel/ktlb.S~sparc64-sparsemem_vmemmap-support
+++ a/arch/sparc64/kernel/ktlb.S
@@ -226,6 +226,15 @@ kvmap_dtlb_load:
ba,pt %xcc, sun4v_dtlb_load
mov %g5, %g3
+kvmap_vmemmap:
+ sub %g4, %g5, %g5
+ srlx %g5, 22, %g5
+ sethi %hi(vmemmap_table), %g1
+ sllx %g5, 3, %g5
+ or %g1, %lo(vmemmap_table), %g1
+ ba,pt %xcc, kvmap_dtlb_load
+ ldx [%g1 + %g5], %g5
+
kvmap_dtlb_nonlinear:
/* Catch kernel NULL pointer derefs. */
sethi %hi(PAGE_SIZE), %g5
@@ -233,6 +242,13 @@ kvmap_dtlb_nonlinear:
bleu,pn %xcc, kvmap_dtlb_longpath
nop
+ /* Do not use the TSB for vmemmap. */
+ mov (VMEMMAP_BASE >> 24), %g5
+ sllx %g5, 24, %g5
+ cmp %g4,%g5
+ bgeu,pn %xcc, kvmap_vmemmap
+ nop
+
KERN_TSB_LOOKUP_TL1(%g4, %g6, %g5, %g1, %g2, %g3, kvmap_dtlb_load)
kvmap_dtlb_tsbmiss:
diff -puN arch/sparc64/mm/init.c~sparc64-sparsemem_vmemmap-support arch/sparc64/mm/init.c
--- a/arch/sparc64/mm/init.c~sparc64-sparsemem_vmemmap-support
+++ a/arch/sparc64/mm/init.c
@@ -1645,6 +1645,58 @@ EXPORT_SYMBOL(_PAGE_E);
unsigned long _PAGE_CACHE __read_mostly;
EXPORT_SYMBOL(_PAGE_CACHE);
+#ifdef CONFIG_SPARSEMEM_VMEMMAP
+
+#define VMEMMAP_CHUNK_SHIFT 22
+#define VMEMMAP_CHUNK (1UL << VMEMMAP_CHUNK_SHIFT)
+#define VMEMMAP_CHUNK_MASK ~(VMEMMAP_CHUNK - 1UL)
+#define VMEMMAP_ALIGN(x) (((x)+VMEMMAP_CHUNK-1UL)&VMEMMAP_CHUNK_MASK)
+
+#define VMEMMAP_SIZE ((((1UL << MAX_PHYSADDR_BITS) >> PAGE_SHIFT) * \
+ sizeof(struct page *)) >> VMEMMAP_CHUNK_SHIFT)
+unsigned long vmemmap_table[VMEMMAP_SIZE];
+
+int __meminit vmemmap_populate(struct page *start, unsigned long nr, int node)
+{
+ unsigned long vstart = (unsigned long) start;
+ unsigned long vend = (unsigned long) (start + nr);
+ unsigned long phys_start = (vstart - VMEMMAP_BASE);
+ unsigned long phys_end = (vend - VMEMMAP_BASE);
+ unsigned long addr = phys_start & VMEMMAP_CHUNK_MASK;
+ unsigned long end = VMEMMAP_ALIGN(phys_end);
+ unsigned long pte_base;
+
+ pte_base = (_PAGE_VALID | _PAGE_SZ4MB_4U |
+ _PAGE_CP_4U | _PAGE_CV_4U |
+ _PAGE_P_4U | _PAGE_W_4U);
+ if (tlb_type == hypervisor)
+ pte_base = (_PAGE_VALID | _PAGE_SZ4MB_4V |
+ _PAGE_CP_4V | _PAGE_CV_4V |
+ _PAGE_P_4V | _PAGE_W_4V);
+
+ for (; addr < end; addr += VMEMMAP_CHUNK) {
+ unsigned long *vmem_pp =
+ vmemmap_table + (addr >> VMEMMAP_CHUNK_SHIFT);
+ void *block;
+
+ if (!(*vmem_pp & _PAGE_VALID)) {
+ block = vmemmap_alloc_block(1UL << 22, node);
+ if (!block)
+ return -ENOMEM;
+
+ *vmem_pp = pte_base | __pa(block);
+
+ printk(KERN_INFO "[%p-%p] page_structs=%lu "
+ "node=%d entry=%lu/%lu\n", start, block, nr,
+ node,
+ addr >> VMEMMAP_CHUNK_SHIFT,
+ VMEMMAP_SIZE >> VMEMMAP_CHUNK_SHIFT);
+ }
+ }
+ return 0;
+}
+#endif /* CONFIG_SPARSEMEM_VMEMMAP */
+
static void prot_init_common(unsigned long page_none,
unsigned long page_shared,
unsigned long page_copy,
diff -puN include/asm-sparc64/pgtable.h~sparc64-sparsemem_vmemmap-support include/asm-sparc64/pgtable.h
--- a/include/asm-sparc64/pgtable.h~sparc64-sparsemem_vmemmap-support
+++ a/include/asm-sparc64/pgtable.h
@@ -42,6 +42,9 @@
#define HI_OBP_ADDRESS _AC(0x0000000100000000,UL)
#define VMALLOC_START _AC(0x0000000100000000,UL)
#define VMALLOC_END _AC(0x0000000200000000,UL)
+#define VMEMMAP_BASE _AC(0x0000000200000000,UL)
+
+#define vmemmap ((struct page *)VMEMMAP_BASE)
/* XXX All of this needs to be rethought so we can take advantage
* XXX cheetah's full 64-bit virtual address space, ie. no more hole
_
Patches currently in -mm which might be from davem@xxxxxxxxxxxxx are
origin.patch
uml-header_ops-conversion-needed-for-non-ethernet-drivers.patch
net-dccp-fix-link-error-with-config_sysctl.patch
ucc_geth-fix-build-break-introduced-by-commit-09f75cd7bf13720738e6a196cc0107ce9a5bd5a0-checkpatch-fixes.patch
git-scsi-misc.patch
sparc-support-for-new-termios.patch
sparc-support-for-new-termios-checkpatch-fixes.patch
git-wireless.patch
unexport-asm-shmparamh.patch
kconfig-make-instrumentation-support-non-experimental.patch
remove-dma_cache_wbackinvwback_inv-functions.patch
intel-iommu-dmar-detection-and-parsing-logic.patch
intel-iommu-pci-generic-helper-function.patch
intel-iommu-clflush_cache_range-now-takes-size-param.patch
intel-iommu-iova-allocation-and-management-routines.patch
intel-iommu-intel-iommu-driver.patch
intel-iommu-avoid-memory-allocation-failures-in-dma-map-api-calls.patch
intel-iommu-intel-iommu-cmdline-option-forcedac.patch
intel-iommu-dmar-fault-handling-support.patch
intel-iommu-iommu-gfx-workaround.patch
intel-iommu-iommu-floppy-workaround.patch
update-dma-mapping-documentation.patch
sysctl-fix-neighbour-table-sysctls.patch
sysctl-ipv6-route-flushing-kill-binary-path.patch
sysctl-remove-broken-sunrpc-debug-binary-sysctls.patch
sysctl-ipv4-remove-binary-sysctl-paths-where-they-are-broken.patch
sysctl-remove-broken-netfilter-binary-sysctls.patch
sysctl-update-sysctl_checks-list-of-binary-paths.patch
bitops-introduce-lock-ops.patch
-
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