[RFC PATCH v2 3/6] ARM: Allow ASID 0 to be allocated to tasks
From: catalin.marinas@arm.com (Catalin Marinas)
Date: 2011-12-19 14:58:30
Also in:
lkml
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
From: Will Deacon <redacted> Now that ASID 0 is no longer used as a reserved value, allow it to be allocated to tasks. Signed-off-by: Will Deacon <redacted> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Reviewed-by: Frank Rowand <redacted> Cc: Russell King <redacted> --- arch/arm/mm/context.c | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/arm/mm/context.c b/arch/arm/mm/context.c
index a062230..1d5014b 100644
--- a/arch/arm/mm/context.c
+++ b/arch/arm/mm/context.c@@ -100,7 +100,7 @@ static void reset_context(void *info) return; smp_rmb(); - asid = cpu_last_asid + cpu + 1; + asid = cpu_last_asid + cpu; flush_context(); set_mm_context(mm, asid);
@@ -149,13 +149,13 @@ void __new_context(struct mm_struct *mm) * to start a new version and flush the TLB. */ if (unlikely((asid & ~ASID_MASK) == 0)) { - asid = cpu_last_asid + smp_processor_id() + 1; + asid = cpu_last_asid + smp_processor_id(); flush_context(); #ifdef CONFIG_SMP smp_wmb(); smp_call_function(reset_context, NULL, 1); #endif - cpu_last_asid += NR_CPUS; + cpu_last_asid += NR_CPUS - 1; } set_mm_context(mm, asid);