From: "Jayachandran C" <jchandra@broadcom.com>
To: linux-mips@linux-mips.org, ralf@linux-mips.org
Cc: "Jayachandran C" <jchandra@broadcom.com>
Subject: [PATCH 1/2] MIPS: Netlogic: define cpu_has_fpu macro
Date: Tue, 14 Aug 2012 18:56:12 +0530 [thread overview]
Message-ID: <1344950773-29299-2-git-send-email-jchandra@broadcom.com> (raw)
In-Reply-To: <1344950773-29299-1-git-send-email-jchandra@broadcom.com>
The default implementation of 'cpu_has_fpu' macro calls
smp_processor_id() which causes this warning when preemption is enabled:
[ 4.664000] Algorithmics/MIPS FPU Emulator v1.5
[ 4.676000] BUG: using smp_processor_id() in preemptible [00000000] code: init/1
[ 4.700000] caller is fpu_emulator_cop1Handler+0x434/0x27b8
Work around this by defining cpu_has_fpu for XLR and XLP in
mach-netlogic/cpu-feature-overrides.h
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
---
.../asm/mach-netlogic/cpu-feature-overrides.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/mips/include/asm/mach-netlogic/cpu-feature-overrides.h b/arch/mips/include/asm/mach-netlogic/cpu-feature-overrides.h
index 966db4b..4f5907f 100644
--- a/arch/mips/include/asm/mach-netlogic/cpu-feature-overrides.h
+++ b/arch/mips/include/asm/mach-netlogic/cpu-feature-overrides.h
@@ -44,10 +44,12 @@
#define cpu_has_dc_aliases 0
#define cpu_has_mips32r2 0
#define cpu_has_mips64r2 0
+#define cpu_has_fpu 0
#elif defined(CONFIG_CPU_XLP)
#define cpu_has_userlocal 1
#define cpu_has_mips32r2 1
#define cpu_has_mips64r2 1
+#define cpu_has_fpu 1
#else
#error "Unknown Netlogic CPU"
#endif
--
1.7.9.5
next prev parent reply other threads:[~2012-08-14 13:25 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-14 13:26 [PATCH 0/2] MIPS: Netlogic: Fixes for 3.6 Jayachandran C
2012-08-14 13:26 ` Jayachandran C [this message]
2012-08-14 13:38 ` [PATCH 1/2] MIPS: Netlogic: define cpu_has_fpu macro Ralf Baechle
2012-08-14 16:03 ` [PATCH] MIPS: Fix for warning from FPU emulation code Jayachandran C
2012-08-15 17:42 ` Ralf Baechle
2012-08-14 13:26 ` [PATCH 2/2] MIPS: Synchronize MIPS count one CPU at a time Jayachandran C
2012-08-15 10:41 ` Ralf Baechle
-- strict thread matches above, loose matches on Subject: below --
2012-08-14 11:30 [PATCH 1/2] MIPS: Netlogic: define cpu_has_fpu macro Jayachandran C
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