From mboxrd@z Thu Jan 1 00:00:00 1970 From: catalin.marinas@arm.com (Catalin Marinas) Date: Fri, 20 Jan 2012 17:42:29 +0000 Subject: [PATCH v3 3/6] ARM: Allow ASID 0 to be allocated to tasks In-Reply-To: <1327081352-13178-1-git-send-email-catalin.marinas@arm.com> References: <1327081352-13178-1-git-send-email-catalin.marinas@arm.com> Message-ID: <1327081352-13178-4-git-send-email-catalin.marinas@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Will Deacon Now that ASID 0 is no longer used as a reserved value, allow it to be allocated to tasks. Reviewed-by: Frank Rowand Cc: Russell King Signed-off-by: Will Deacon Signed-off-by: Catalin Marinas --- 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 97842a0..efa413a 100644 --- a/arch/arm/mm/context.c +++ b/arch/arm/mm/context.c @@ -118,7 +118,7 @@ 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); @@ -167,13 +167,13 @@ 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);