diff options
| author |   Michael Ellerman <michael@ellerman.id.au> | 2005-12-05 10:24:33 -0600 |
|---|---|---|
| committer |   Paul Mackerras <paulus@samba.org> | 2006-01-09 14:51:54 +1100 |
| commit | b5666f70395016a55cc9d57826508b8a346398d0 (patch) | |
| tree | 39d74718c2bc3f2fcba6456fdc39a6a0de3d78bd /arch/powerpc/kernel/machine_kexec_64.c | |
| parent | [PATCH] powerpc: Add a is_kernel_addr() macro (diff) | |
| download | linux-dev-b5666f70395016a55cc9d57826508b8a346398d0.tar.xz linux-dev-b5666f70395016a55cc9d57826508b8a346398d0.zip | |
[PATCH] powerpc: Separate usage of KERNELBASE and PAGE_OFFSET
This patch separates usage of KERNELBASE and PAGE_OFFSET. I haven't
looked at any of the PPC32 code, if we ever want to support Kdump on
PPC we'll have to do another audit, ditto for iSeries.
This patch makes PAGE_OFFSET the constant, it'll always be 0xC * 1
gazillion for 64-bit.
To get a physical address from a virtual one you subtract PAGE_OFFSET,
_not_ KERNELBASE.
KERNELBASE is the virtual address of the start of the kernel, it's
often the same as PAGE_OFFSET, but _might not be_.
If you want to know something's offset from the start of the kernel
you should subtract KERNELBASE.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/kernel/machine_kexec_64.c')
| -rw-r--r-- | arch/powerpc/kernel/machine_kexec_64.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/machine_kexec_64.c b/arch/powerpc/kernel/machine_kexec_64.c index ec0f06bfc24a..0b0fa4768995 100644 --- a/arch/powerpc/kernel/machine_kexec_64.c +++ b/arch/powerpc/kernel/machine_kexec_64.c @@ -153,9 +153,8 @@ void kexec_copy_flush(struct kimage *image) * including ones that were in place on the original copy */ for (i = 0; i < nr_segments; i++) - flush_icache_range(ranges[i].mem + KERNELBASE, - ranges[i].mem + KERNELBASE + - ranges[i].memsz); + flush_icache_range((unsigned long)__va(ranges[i].mem), + (unsigned long)__va(ranges[i].mem + ranges[i].memsz)); } #ifdef CONFIG_SMP |