From 7abc07531383ac7f727cc9d44e1360a829f2082e Mon Sep 17 00:00:00 2001 From: Cyrill Gorcunov Date: Tue, 10 Nov 2009 01:06:59 +0300 Subject: x86: apic: Do not use stacked physid_mask_t We should not use physid_mask_t as a stack based variable in apic code. This type depends on MAX_APICS parameter which may be huge enough. Especially it became a problem with apic NOOP driver which is portable between 32 bit and 64 bit environment (where we have really huge MAX_APICS). So apic driver should operate with pointers and a caller in turn should aware of allocation physid_mask_t variable. As a side (but positive) effect -- we may use already implemented physid_set_mask_of_physid function eliminating default_apicid_to_cpu_present completely. Note that physids_coerce and physids_promote turned into static inline from macro (since macro hides the fact that parameter is being interpreted as unsigned long, make it explicit). Signed-off-by: Cyrill Gorcunov Cc: Yinghai Lu Cc: Maciej W. Rozycki Cc: Stephen Rothwell LKML-Reference: <20091109220659.GA5568@lenovo> Signed-off-by: Ingo Molnar --- arch/x86/kernel/apic/summit_32.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'arch/x86/kernel/apic/summit_32.c') diff --git a/arch/x86/kernel/apic/summit_32.c b/arch/x86/kernel/apic/summit_32.c index 645ecc4ff0b..9b419263d90 100644 --- a/arch/x86/kernel/apic/summit_32.c +++ b/arch/x86/kernel/apic/summit_32.c @@ -183,7 +183,7 @@ static const struct cpumask *summit_target_cpus(void) return cpumask_of(0); } -static unsigned long summit_check_apicid_used(physid_mask_t bitmap, int apicid) +static unsigned long summit_check_apicid_used(physid_mask_t *map, int apicid) { return 0; } @@ -261,15 +261,15 @@ static int summit_cpu_present_to_apicid(int mps_cpu) return BAD_APICID; } -static physid_mask_t summit_ioapic_phys_id_map(physid_mask_t phys_id_map) +static void summit_ioapic_phys_id_map(physid_mask_t *phys_id_map, physid_mask_t *retmap) { /* For clustered we don't have a good way to do this yet - hack */ - return physids_promote(0x0F); + physids_promote(0x0FL, retmap); } -static physid_mask_t summit_apicid_to_cpu_present(int apicid) +static void summit_apicid_to_cpu_present(int apicid, physid_mask_t *retmap) { - return physid_mask_of_physid(0); + physid_set_mask_of_physid(0, retmap); } static int summit_check_phys_apicid_present(int physical_apicid) -- cgit v1.2.3-70-g09d2