From: David Miller <davem@davemloft.net>
To: peterz@infradead.org
Cc: mingo@kernel.org, will@kernel.org, tglx@linutronix.de,
x86@kernel.org, linux-kernel@vger.kernel.org,
a.darwish@linutronix.de, rostedt@goodmis.org,
bigeasy@linutronix.de, sparclinux@vger.kernel.org,
mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org,
heiko.carstens@de.ibm.com, linux-s390@vger.kernel.org
Subject: Re: [RFC][PATCH v3 1/5] sparc64: Fix asm/percpu.h build error
Date: Fri, 29 May 2020 16:29:17 -0700 (PDT) [thread overview]
Message-ID: <20200529.162917.1970892823680223252.davem@davemloft.net> (raw)
In-Reply-To: <20200529214203.673108357@infradead.org>
From: Peter Zijlstra <peterz@infradead.org>
Date: Fri, 29 May 2020 23:35:51 +0200
> ../arch/sparc/include/asm/percpu_64.h:7:24: warning: call-clobbered register used for global register variable
> register unsigned long __local_per_cpu_offset asm("g5");
The "-ffixed-g5" option on the command line tells gcc that we are
using 'g5' as a fixed register, so some part of your build isn't using
the:
KBUILD_CFLAGS += -ffixed-g4 -ffixed-g5 -fcall-used-g7 -Wno-sign-compare
from arch/sparc/Makefile for some reason.
WARNING: multiple messages have this Message-ID (diff)
From: David Miller <davem@davemloft.net>
To: peterz@infradead.org
Cc: mingo@kernel.org, will@kernel.org, tglx@linutronix.de,
x86@kernel.org, linux-kernel@vger.kernel.org,
a.darwish@linutronix.de, rostedt@goodmis.org,
bigeasy@linutronix.de, sparclinux@vger.kernel.org,
mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org,
heiko.carstens@de.ibm.com, linux-s390@vger.kernel.org
Subject: Re: [RFC][PATCH v3 1/5] sparc64: Fix asm/percpu.h build error
Date: Fri, 29 May 2020 23:29:17 +0000 [thread overview]
Message-ID: <20200529.162917.1970892823680223252.davem@davemloft.net> (raw)
In-Reply-To: <20200529214203.673108357@infradead.org>
From: Peter Zijlstra <peterz@infradead.org>
Date: Fri, 29 May 2020 23:35:51 +0200
> ../arch/sparc/include/asm/percpu_64.h:7:24: warning: call-clobbered register used for global register variable
> register unsigned long __local_per_cpu_offset asm("g5");
The "-ffixed-g5" option on the command line tells gcc that we are
using 'g5' as a fixed register, so some part of your build isn't using
the:
KBUILD_CFLAGS += -ffixed-g4 -ffixed-g5 -fcall-used-g7 -Wno-sign-compare
from arch/sparc/Makefile for some reason.
WARNING: multiple messages have this Message-ID (diff)
From: David Miller <davem@davemloft.net>
To: peterz@infradead.org
Cc: linux-s390@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
bigeasy@linutronix.de, x86@kernel.org, heiko.carstens@de.ibm.com,
linux-kernel@vger.kernel.org, rostedt@goodmis.org,
a.darwish@linutronix.de, sparclinux@vger.kernel.org,
tglx@linutronix.de, will@kernel.org, mingo@kernel.org
Subject: Re: [RFC][PATCH v3 1/5] sparc64: Fix asm/percpu.h build error
Date: Fri, 29 May 2020 16:29:17 -0700 (PDT) [thread overview]
Message-ID: <20200529.162917.1970892823680223252.davem@davemloft.net> (raw)
In-Reply-To: <20200529214203.673108357@infradead.org>
From: Peter Zijlstra <peterz@infradead.org>
Date: Fri, 29 May 2020 23:35:51 +0200
> ../arch/sparc/include/asm/percpu_64.h:7:24: warning: call-clobbered register used for global register variable
> register unsigned long __local_per_cpu_offset asm("g5");
The "-ffixed-g5" option on the command line tells gcc that we are
using 'g5' as a fixed register, so some part of your build isn't using
the:
KBUILD_CFLAGS += -ffixed-g4 -ffixed-g5 -fcall-used-g7 -Wno-sign-compare
from arch/sparc/Makefile for some reason.
next prev parent reply other threads:[~2020-05-29 23:29 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-29 21:35 [PATCH v3 0/5] lockdep: Change IRQ state tracking to use per-cpu variables Peter Zijlstra
2020-05-29 21:35 ` Peter Zijlstra
2020-05-29 21:35 ` Peter Zijlstra
2020-05-29 21:35 ` [RFC][PATCH v3 1/5] sparc64: Fix asm/percpu.h build error Peter Zijlstra
2020-05-29 21:35 ` Peter Zijlstra
2020-05-29 21:35 ` Peter Zijlstra
2020-05-29 23:29 ` David Miller [this message]
2020-05-29 23:29 ` David Miller
2020-05-29 23:29 ` David Miller
2020-06-04 16:57 ` Peter Zijlstra
2020-06-04 16:57 ` Peter Zijlstra
2020-06-04 16:57 ` Peter Zijlstra
2020-06-04 20:41 ` Peter Zijlstra
2020-06-04 20:41 ` Peter Zijlstra
2020-06-04 20:41 ` Peter Zijlstra
2020-05-29 21:35 ` [PATCH v3 2/5] powerpc64: Break asm/percpu.h vs spinlock_types.h dependency Peter Zijlstra
2020-05-29 21:35 ` Peter Zijlstra
2020-05-29 21:35 ` Peter Zijlstra
2020-05-29 21:35 ` [PATCH v3 3/5] s390: Break cyclic percpu include Peter Zijlstra
2020-05-29 21:35 ` Peter Zijlstra
2020-05-29 21:35 ` Peter Zijlstra
2020-05-29 21:35 ` [PATCH v3 4/5] lockdep: Change hardirq{s_enabled,_context} to per-cpu variables Peter Zijlstra
2020-05-29 21:35 ` [PATCH v3 4/5] lockdep: Change hardirq{s_enabled, _context} " Peter Zijlstra
2020-05-29 21:35 ` [PATCH v3 4/5] lockdep: Change hardirq{s_enabled,_context} " Peter Zijlstra
2020-05-29 21:35 ` [PATCH v3 5/5] lockdep: Remove lockdep_hardirq{s_enabled,_context}() argument Peter Zijlstra
2020-05-29 21:35 ` [PATCH v3 5/5] lockdep: Remove lockdep_hardirq{s_enabled, _context}() argument Peter Zijlstra
2020-05-29 21:35 ` [PATCH v3 5/5] lockdep: Remove lockdep_hardirq{s_enabled,_context}() argument Peter Zijlstra
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