From d6dd61c831226f9cd7750885da04d360d6455101 Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Wed, 2 May 2007 19:27:14 +0200 Subject: [PATCH] x86: PARAVIRT: add hooks to intercept mm creation and destruction Add hooks to allow a paravirt implementation to track the lifetime of an mm. Paravirtualization requires three hooks, but only two are needed in common code. They are: arch_dup_mmap, which is called when a new mmap is created at fork arch_exit_mmap, which is called when the last process reference to an mm is dropped, which typically happens on exit and exec. The third hook is activate_mm, which is called from the arch-specific activate_mm() macro/function, and so doesn't need stub versions for other architectures. It's called when an mm is first used. Signed-off-by: Jeremy Fitzhardinge Signed-off-by: Andi Kleen Cc: linux-arch@vger.kernel.org Cc: James Bottomley Acked-by: Ingo Molnar --- include/asm-sh/mmu_context.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/asm-sh/mmu_context.h') diff --git a/include/asm-sh/mmu_context.h b/include/asm-sh/mmu_context.h index 342024425b7d..01acaaae9751 100644 --- a/include/asm-sh/mmu_context.h +++ b/include/asm-sh/mmu_context.h @@ -12,6 +12,7 @@ #include #include #include +#include /* * The MMU "context" consists of two things: -- cgit v1.2.3 From 01066625e9ae39742c92e21163f7f2a818e02762 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Wed, 28 Mar 2007 16:38:13 +0900 Subject: sh: bootmem tidying for discontig/sparsemem preparation. This reworks some of the node 0 bootmem initialization in preparation for discontigmem and sparsemem support. ARCH_POPULATES_NODE_MAP is switched to as a result of this. Signed-off-by: Paul Mundt --- include/asm-sh/mmu_context.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/asm-sh/mmu_context.h') diff --git a/include/asm-sh/mmu_context.h b/include/asm-sh/mmu_context.h index 01acaaae9751..199662bb35c6 100644 --- a/include/asm-sh/mmu_context.h +++ b/include/asm-sh/mmu_context.h @@ -169,6 +169,8 @@ enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) #define destroy_context(mm) do { } while (0) #define set_asid(asid) do { } while (0) #define get_asid() (0) +#define set_TTB(pgd) do { } while (0) +#define get_TTB() (0) #define activate_context(mm,cpu) do { } while (0) #define switch_mm(prev,next,tsk) do { } while (0) #define deactivate_mm(tsk,mm) do { } while (0) @@ -211,8 +213,8 @@ static inline void disable_mmu(void) * MMU control handlers for processors lacking memory * management hardware. */ -#define enable_mmu() do { BUG(); } while (0) -#define disable_mmu() do { BUG(); } while (0) +#define enable_mmu() do { } while (0) +#define disable_mmu() do { } while (0) #endif #endif /* __KERNEL__ */ -- cgit v1.2.3