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* powerpc: Merged processor.h.Paul Mackerras2005-10-101-567/+0
| | | | | | | | | This adds register definitions from the ppc64 processor.h to reg.h, and makes a single merged processor.h. I moved __is_processor from the ppc64 system.h to the merged reg.h along with the PVR register constants. Signed-off-by: Paul Mackerras <paulus@samba.org>
* Merge refs/heads/devtree from rsync://oak/kernels/iseries/work/.git Paul Mackerras2005-09-261-0/+1
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| * ppc46 iSeries: Make some generic irq code compile for iSeriesMichael Ellerman2005-09-231-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | In order to call finish_device_tree() on iSeries we need to define virt_irq_create_mapping(). We also need to set ppc64_interrupt_controller to something other than zero. If we want to do interrupt setup via the device tree on iSeries this code will need some serious work, but it's harmless to have it there as long as the nodes in the iSeries device tree don't cause it to be invoked. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
* | [PATCH] powerpc: merge atomic.h, memory.hBecky Bruce2005-09-251-0/+8
|/ | | | | | | | | | | | | | powerpc: Merge atomic.h and memory.h into powerpc Merged atomic.h into include/powerpc. Moved asm-style HMT_ defines from memory.h into ppc_asm.h, where there were already HMT_defines; moved c-style HMT_ defines to processor.h. Renamed memory.h to synch.h to better reflect its contents. Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Signed-off-by: Jon Loeliger <linuxppc@jdl.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [PATCH] ppc64: Add ptrace data breakpoint supportAnton Blanchard2005-09-121-0/+1
| | | | | | | Add hardware data breakpoint support. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [PATCH] Kprobes: prevent possible race conditions ppc64 changesPrasanna S Panchamukhi2005-09-071-0/+14
| | | | | | | | | This patch contains the ppc64 architecture specific changes to prevent the possible race conditions. Signed-off-by: Prasanna S Panchamukhi <prasanna@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] oprofile PVR 970MPJake Moilanen2005-08-301-0/+1
| | | | | | | Here's the 970MP's PVR (processor version register) entry for oprofile. Signed-off-by: Jake Moilanen <moilanen@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [PATCH] Four level pagetables for ppc64David Gibson2005-08-291-2/+2
| | | | | | | | | | | | | | | | | Implement 4-level pagetables for ppc64 This patch implements full four-level page tables for ppc64, thereby extending the usable user address range to 44 bits (16T). The patch uses a full page for the tables at the bottom and top level, and a quarter page for the intermediate levels. It uses full 64-bit pointers at every level, thus also increasing the addressable range of physical memory. This patch also tweaks the VSID allocation to allow matching range for user addresses (this halves the number of available contexts) and adds some #if and BUILD_BUG sanity checks. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [PATCH] ppc64: Turn runlatch on in exception entryAnton Blanchard2005-07-071-0/+9
| | | | | | | | | | | | | | | Enable the runlatch at the start of each exception. Unfortunately we are out of space in the 0x300 handler, so I added it a bit later. The SPR write is fairly expensive, perhaps we should cache the runlatch state in the paca and avoid the write when possible. We don't need to turn the runlatch off, we do that in the idle loop. Better to take the hit in the idle loop than for each exception exit. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc64: Fix runlatch code to work on pseries machinesAnton Blanchard2005-07-071-6/+11
| | | | | | | | Not all ppc64 CPUs have the CTRL SPR, so we need a cputable feature for it. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc64: add BPA platform typeArnd Bergmann2005-06-231-2/+13
| | | | | | | | | | | | | This adds the basic support for running on BPA machines. So far, this is only the IBM workstation, and it will not run on others without a little more generalization. It should be possible to configure a kernel for any combination of CONFIG_PPC_BPA with any of the other multiplatform targets. Signed-off-by: Arnd Bergmann <arndb@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [PATCH] ppc64: Abolish ioremap_mmDavid Gibson2005-06-211-10/+0
| | | | | | | | | | | | | | Currently ppc64 has two mm_structs for the kernel, init_mm and also ioremap_mm. The latter really isn't necessary: this patch abolishes it, instead restricting vmallocs to the lower 1TB of the init_mm's range and placing io mappings in the upper 1TB. This simplifies the code in a number of places and eliminates an unecessary set of pagetables. It also tweaks the unmap/free path a little, allowing us to remove the unmap_im_area() set of page table walkers, replacing them with unmap_vm_area(). Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc64: cleanup iseries runlight supportAnton Blanchard2005-06-021-6/+21
| | | | | | | | | | | | | | | | | | The iseries has a bar graph on the front panel that shows how busy it is. The operating system sets and clears a bit in the CTRL register to control it. Instead of going to the complexity of using a thread info bit, just set and clear it in the idle loop. Also create two helper functions, ppc64_runlatch_on and ppc64_runlatch_off. Finally don't use the short form of the SPR defines. Signed-off-by: Anton Blanchard <anton@samba.org> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc64: cleanup SPR definitionsAnton Blanchard2005-06-021-158/+1
| | | | | | | | | | There are a bunch of irrelevant SPR definitions in asm/processer.h. Cut them down a bit, also add a DABR_TRANSLATION define which will be used shortly. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] freepgt: remove MM_VM_SIZE(mm)Hugh Dickins2005-04-191-4/+0
| | | | | | | | | | | | | | | | | | | | There's only one usage of MM_VM_SIZE(mm) left, and it's a troublesome macro because mm doesn't contain the (32-bit emulation?) info needed. But it too is only needed because we ignore the end from the vma list. We could make flush_pgtables return that end, or unmap_vmas. Choose the latter, since it's a natural fit with unmap_mapping_range_vma needing to know its restart addr. This does make more than minimal change, but if unmap_vmas had returned the end before, this is how we'd have done it, rather than storing the break_addr in zap_details. unmap_vmas used to return count of vmas scanned, but that's just debug which hasn't been useful in a while; and if we want the map_count 0 on exit check back, it can easily come from the final remove_vm_struct loop. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc64: no prefetch for NULL pointersOlof Johansson2005-04-161-0/+6
| | | | | | | | | | | | For prefetches of NULL (as when walking a short linked list), PPC64 will in some cases take a performance hit. The hardware needs to do the TLB walk, and said walk will always miss, which means (up to) two L2 misses as penalty. This seems to hurt overall performance, so for NULL pointers skip the prefetch alltogether. Signed-off-by: Olof Johansson <olof@austin.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-161-0/+667
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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