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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2008-12-28 16:54:33 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-12-28 16:54:33 -0800 |
| commit | 3c92ec8ae91ecf59d88c798301833d7cf83f2179 (patch) | |
| tree | 08a38cd3523c42bd49882f17cd501fd879e7ca1c /arch/powerpc/mm/mmu_context_hash64.c | |
| parent | net: ehea NAPI interface cleanup fix (diff) | |
| parent | powerpc/44x: Support 16K/64K base page sizes on 44x (diff) | |
| download | linux-dev-3c92ec8ae91ecf59d88c798301833d7cf83f2179.tar.xz linux-dev-3c92ec8ae91ecf59d88c798301833d7cf83f2179.zip | |
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (144 commits)
powerpc/44x: Support 16K/64K base page sizes on 44x
powerpc: Force memory size to be a multiple of PAGE_SIZE
powerpc/32: Wire up the trampoline code for kdump
powerpc/32: Add the ability for a classic ppc kernel to be loaded at 32M
powerpc/32: Allow __ioremap on RAM addresses for kdump kernel
powerpc/32: Setup OF properties for kdump
powerpc/32/kdump: Implement crash_setup_regs() using ppc_save_regs()
powerpc: Prepare xmon_save_regs for use with kdump
powerpc: Remove default kexec/crash_kernel ops assignments
powerpc: Make default kexec/crash_kernel ops implicit
powerpc: Setup OF properties for ppc32 kexec
powerpc/pseries: Fix cpu hotplug
powerpc: Fix KVM build on ppc440
powerpc/cell: add QPACE as a separate Cell platform
powerpc/cell: fix build breakage with CONFIG_SPUFS disabled
powerpc/mpc5200: fix error paths in PSC UART probe function
powerpc/mpc5200: add rts/cts handling in PSC UART driver
powerpc/mpc5200: Make PSC UART driver update serial errors counters
powerpc/mpc5200: Remove obsolete code from mpc5200 MDIO driver
powerpc/mpc5200: Add MDMA/UDMA support to MPC5200 ATA driver
...
Fix trivial conflict in drivers/char/Makefile as per Paul's directions
Diffstat (limited to '')
| -rw-r--r-- | arch/powerpc/mm/mmu_context_hash64.c (renamed from arch/powerpc/mm/mmu_context_64.c) | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/mm/mmu_context_64.c b/arch/powerpc/mm/mmu_context_hash64.c index 1db38ba1f544..dbeb86ac90cd 100644 --- a/arch/powerpc/mm/mmu_context_64.c +++ b/arch/powerpc/mm/mmu_context_hash64.c @@ -24,6 +24,14 @@ static DEFINE_SPINLOCK(mmu_context_lock); static DEFINE_IDR(mmu_context_idr); +/* + * The proto-VSID space has 2^35 - 1 segments available for user mappings. + * Each segment contains 2^28 bytes. Each context maps 2^44 bytes, + * so we can support 2^19-1 contexts (19 == 35 + 28 - 44). + */ +#define NO_CONTEXT 0 +#define MAX_CONTEXT ((1UL << 19) - 1) + int init_new_context(struct task_struct *tsk, struct mm_struct *mm) { int index; |