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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-06-02 21:17:41 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-06-09 16:47:38 +1000 |
| commit | 91c60b5b8209627590b31c07262e40c27d27d272 (patch) | |
| tree | 02b8cd432bc4206f5064aab192b160a93355414b /arch/powerpc/kernel/paca.c | |
| parent | 0ebc4cdaa3fd7c9144d15fe9a6bcfcd310c265b8 (diff) | |
| download | linux-91c60b5b8209627590b31c07262e40c27d27d272.tar.gz linux-91c60b5b8209627590b31c07262e40c27d27d272.tar.bz2 linux-91c60b5b8209627590b31c07262e40c27d27d272.zip | |
powerpc: Separate PACA fields for server CPUs
This patch has no effect other than re-ordering PACA fields on
current server CPUs. It however is a pre-requisite for future
support of BookE 64-bit processors. Various parts of the PACA
struct are now moved under some ifdef's, either the new
CONFIG_PPC_BOOK3S or CONFIG_PPC_STD_MMU_64, whatever seems more
appropriate.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.craashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/paca.c')
| -rw-r--r-- | arch/powerpc/kernel/paca.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c index c744b327bcab..e9962c7f8a09 100644 --- a/arch/powerpc/kernel/paca.c +++ b/arch/powerpc/kernel/paca.c @@ -18,6 +18,8 @@ * field correctly */ extern unsigned long __toc_start; +#ifdef CONFIG_PPC_BOOK3S + /* * The structure which the hypervisor knows about - this structure * should not cross a page boundary. The vpa_init/register_vpa call @@ -41,6 +43,10 @@ struct lppaca lppaca[] = { }, }; +#endif /* CONFIG_PPC_BOOK3S */ + +#ifdef CONFIG_PPC_STD_MMU_64 + /* * 3 persistent SLBs are registered here. The buffer will be zero * initially, hence will all be invaild until we actually write them. @@ -52,6 +58,8 @@ struct slb_shadow slb_shadow[] __cacheline_aligned = { }, }; +#endif /* CONFIG_PPC_STD_MMU_64 */ + /* The Paca is an array with one entry per processor. Each contains an * lppaca, which contains the information shared between the * hypervisor and Linux. @@ -77,15 +85,19 @@ void __init initialise_pacas(void) for (cpu = 0; cpu < NR_CPUS; cpu++) { struct paca_struct *new_paca = &paca[cpu]; +#ifdef CONFIG_PPC_BOOK3S new_paca->lppaca_ptr = &lppaca[cpu]; +#endif new_paca->lock_token = 0x8000; new_paca->paca_index = cpu; new_paca->kernel_toc = kernel_toc; new_paca->kernelbase = (unsigned long) _stext; new_paca->kernel_msr = MSR_KERNEL; new_paca->hw_cpu_id = 0xffff; - new_paca->slb_shadow_ptr = &slb_shadow[cpu]; new_paca->__current = &init_task; +#ifdef CONFIG_PPC_STD_MMU_64 + new_paca->slb_shadow_ptr = &slb_shadow[cpu]; +#endif /* CONFIG_PPC_STD_MMU_64 */ } } |