[PATCH] powerpc: Replace VMALLOCBASE with VMALLOC_START
On ppc64, we independently define VMALLOCBASE and VMALLOC_START to be
the same thing: the start of the vmalloc() area at 0xd000000000000000.
VMALLOC_START is used much more widely, including in generic code, so
this patch gets rid of the extraneous VMALLOCBASE.
This does require moving the definitions of region IDs from page_64.h
to pgtable.h, but they don't clearly belong in the former rather than
the latter, anyway. While we're moving them, clean up the definitions
of the REGION_IDs:
- Abolish REGION_SIZE, it was only used once, to define
REGION_MASK anyway
- Define the specific region ids in terms of the REGION_ID()
macro.
- Define KERNEL_REGION_ID in terms of PAGE_OFFSET rather than
KERNELBASE. It amounts to the same thing, but conceptually this is
about the region of the linear mapping (which starts at PAGE_OFFSET)
rather than of the kernel text itself (which is at KERNELBASE).
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/kernel/lparmap.c b/arch/powerpc/kernel/lparmap.c
index 8a53d43..92d9474 100644
--- a/arch/powerpc/kernel/lparmap.c
+++ b/arch/powerpc/kernel/lparmap.c
@@ -18,8 +18,8 @@
.xEsids = {
{ .xKernelEsid = GET_ESID(PAGE_OFFSET),
.xKernelVsid = KERNEL_VSID(PAGE_OFFSET), },
- { .xKernelEsid = GET_ESID(VMALLOCBASE),
- .xKernelVsid = KERNEL_VSID(VMALLOCBASE), },
+ { .xKernelEsid = GET_ESID(VMALLOC_START),
+ .xKernelVsid = KERNEL_VSID(VMALLOC_START), },
},
.xRanges = {
diff --git a/arch/powerpc/mm/slb.c b/arch/powerpc/mm/slb.c
index cc22570..ffc8ed4 100644
--- a/arch/powerpc/mm/slb.c
+++ b/arch/powerpc/mm/slb.c
@@ -87,8 +87,8 @@
/* Slot 2 - kernel stack */
"slbmte %2,%3\n"
"isync"
- :: "r"(mk_vsid_data(VMALLOCBASE, vflags)),
- "r"(mk_esid_data(VMALLOCBASE, 1)),
+ :: "r"(mk_vsid_data(VMALLOC_START, vflags)),
+ "r"(mk_esid_data(VMALLOC_START, 1)),
"r"(mk_vsid_data(ksp_esid_data, lflags)),
"r"(ksp_esid_data)
: "memory");
@@ -216,7 +216,7 @@
create_slbe(PAGE_OFFSET, lflags, 0);
/* VMALLOC space has 4K pages always for now */
- create_slbe(VMALLOCBASE, vflags, 1);
+ create_slbe(VMALLOC_START, vflags, 1);
/* We don't bolt the stack for the time being - we're in boot,
* so the stack is in the bolted segment. By the time it goes