From b3572e361b6b2ac5e724bc4bb932b7774b720b95 Mon Sep 17 00:00:00 2001 From: James Bottomley Date: Thu, 30 Oct 2008 16:00:59 -0500 Subject: x86/voyager: fix compile breakage caused by dc1e35c6e95e8923cf1d3510438b63c600fee1e2 Impact: build fix on x86/Voyager Given commits like this: | Author: Suresh Siddha | Date: Tue Jul 29 10:29:19 2008 -0700 | | x86, xsave: enable xsave/xrstor on cpus with xsave support Which deliberately expose boot cpu dependence to pieces of the system, I think it's time to explicitly have a variable for it to prevent this continual misassumption that the boot CPU is zero. Signed-off-by: James Bottomley Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/x86/kernel/cpu/common.c') diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 25581dcb280e..93e9393ea64a 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1134,7 +1134,7 @@ void __cpuinit cpu_init(void) /* * Boot processor to setup the FP and extended state context info. */ - if (!smp_processor_id()) + if (smp_processor_id() == boot_cpu_id) init_thread_xstate(); xsave_init(); -- cgit v1.2.2 From bfcb4c1becf93b1592f4a03a4d6e00a3ab89d5ec Mon Sep 17 00:00:00 2001 From: James Bottomley Date: Thu, 30 Oct 2008 16:13:37 -0500 Subject: x86/voyager: fix missing cpu_index initialisation Impact: fix /proc/cpuinfo output on x86/Voyager Ever since | commit 92cb7612aee39642d109b8d935ad265e602c0563 | Author: Mike Travis | Date: Fri Oct 19 20:35:04 2007 +0200 | | x86: convert cpuinfo_x86 array to a per_cpu array We've had an extra field in cpuinfo_x86 which is cpu_index. Unfortunately, voyager has never initialised this, although the only noticeable impact seems to be that /proc/cpuinfo shows all zeros for the processor ids. Anyway, fix this by initialising the boot CPU properly and setting the index when the secondaries update. Signed-off-by: James Bottomley Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/common.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/x86/kernel/cpu/common.c') diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 93e9393ea64a..da8f15ac7a6d 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -549,6 +549,8 @@ static void __init early_identify_cpu(struct cpuinfo_x86 *c) this_cpu->c_early_init(c); validate_pat_support(c); + + c->cpu_index = boot_cpu_id; } void __init early_cpu_init(void) -- cgit v1.2.2 From 1c4acdb467f8a6704855a5670ff3d82e3c18eb0b Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Fri, 31 Oct 2008 00:43:03 +0100 Subject: x86: cpu_index build fix fix: arch/x86/kernel/cpu/common.c: In function 'early_identify_cpu': arch/x86/kernel/cpu/common.c:553: error: 'struct cpuinfo_x86' has no member named 'cpu_index' as cpu_index is only available on SMP. Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/common.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/x86/kernel/cpu/common.c') diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index da8f15ac7a6d..003a65395bd5 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -550,7 +550,9 @@ static void __init early_identify_cpu(struct cpuinfo_x86 *c) validate_pat_support(c); +#ifdef CONFIG_SMP c->cpu_index = boot_cpu_id; +#endif } void __init early_cpu_init(void) -- cgit v1.2.2