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| author | Tejun Heo <tj@kernel.org> | 2011-05-02 17:24:48 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2011-05-02 17:24:48 +0200 |
| commit | 1b7e03ef7570568d2fb9e6640d7006a0edd728f6 (patch) | |
| tree | b973610ee8a1c6af939be90656b7c4c73ace4c03 /arch/x86/Kconfig | |
| parent | 2706a0bf7b02693ed88752df877f10c2206292ff (diff) | |
| download | lwn-1b7e03ef7570568d2fb9e6640d7006a0edd728f6.tar.gz lwn-1b7e03ef7570568d2fb9e6640d7006a0edd728f6.zip | |
x86, NUMA: Enable emulation on 32bit too
Now that NUMA init path is unified, NUMA emulation can be enabled on
32bit. Make numa_emluation.c safe on 32bit by doing the followings.
* Define MAX_DMA32_PFN on 32bit too.
* Include bootmem.h for max_pfn declaration.
* Use u64 explicitly and always use PFN_PHYS() when converting page
number to address.
* Avoid __udivdi3() generation on 32bit by doing number of pages
calculation instead in split_nodes_interleave().
And drop X86_64 dependency from Kconfig.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Diffstat (limited to 'arch/x86/Kconfig')
| -rw-r--r-- | arch/x86/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 50cb68d2901d..648fca42ae6a 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1201,7 +1201,7 @@ config NODES_SPAN_OTHER_NODES config NUMA_EMU bool "NUMA emulation" - depends on X86_64 && NUMA + depends on NUMA ---help--- Enable NUMA emulation. A flat machine will be split into virtual nodes when booted with "numa=fake=N", where N is the |