From: Michal Suchanek <msuchanek@suse.de>
To: linuxppc-dev@lists.ozlabs.org
Cc: Michal Suchanek <msuchanek@suse.de>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Alexander Viro <viro@zeniv.linux.org.uk>,
"Dmitry V. Levin" <ldv@altlinux.org>,
Thomas Gleixner <tglx@linutronix.de>,
"Steven Rostedt" <rostedt@goodmis.org>,
Max Filippov <jcmvbkbc@gmail.com>,
Firoz Khan <firoz.khan@linaro.org>,
Christophe Leroy <christophe.leroy@c-s.fr>,
Nicholas Piggin <npiggin@gmail.com>,
Hari Bathini <hbathini@linux.ibm.com>,
Joel Stanley <joel@jms.id.au>,
Andrew Donnellan <andrew.donnellan@au1.ibm.com>,
Breno Leitao <leitao@debian.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Allison Randal <allison@lohutok.net>,
Michael Neuling <mikey@neuling.org>,
Andrew Morton <akpm@linux-foundation.org>,
David Hildenbrand <david@redhat.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: [PATCH 3/4] powerpc/64: make buildable without CONFIG_COMPAT
Date: Tue, 27 Aug 2019 22:21:08 +0200 [thread overview]
Message-ID: <7af66fde886e850fe137d91dfb60cf5869cbe41f.1566936688.git.msuchanek@suse.de> (raw)
In-Reply-To: <cover.1566936688.git.msuchanek@suse.de>
There are numerous references to 32bit functions in generic and 64bit
code so ifdef them out.
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
---
arch/powerpc/include/asm/syscall.h | 2 ++
arch/powerpc/kernel/Makefile | 15 ++++++++++++---
arch/powerpc/kernel/entry_64.S | 2 ++
arch/powerpc/kernel/signal.c | 5 +++--
arch/powerpc/kernel/syscall_64.c | 5 +++--
arch/powerpc/kernel/vdso.c | 4 +++-
arch/powerpc/perf/callchain.c | 14 ++++++++++----
7 files changed, 35 insertions(+), 12 deletions(-)
diff --git a/arch/powerpc/include/asm/syscall.h b/arch/powerpc/include/asm/syscall.h
index 38d62acfdce7..3ed3b75541a1 100644
--- a/arch/powerpc/include/asm/syscall.h
+++ b/arch/powerpc/include/asm/syscall.h
@@ -16,7 +16,9 @@
/* ftrace syscalls requires exporting the sys_call_table */
extern const unsigned long sys_call_table[];
+#ifdef CONFIG_COMPAT
extern const unsigned long compat_sys_call_table[];
+#endif
static inline int syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
{
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 1d646a94d96c..b0db365b83d8 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -44,16 +44,25 @@ CFLAGS_btext.o += -DDISABLE_BRANCH_PROFILING
endif
obj-y := cputable.o ptrace.o syscalls.o \
- irq.o align.o signal_32.o pmc.o vdso.o \
+ irq.o align.o pmc.o vdso.o \
process.o systbl.o idle.o \
signal.o sysfs.o cacheinfo.o time.o \
prom.o traps.o setup-common.o \
udbg.o misc.o io.o misc_$(BITS).o \
of_platform.o prom_parse.o
-obj-$(CONFIG_PPC64) += setup_64.o sys_ppc32.o \
- signal_64.o ptrace32.o \
+ifndef CONFIG_PPC64
+obj-y += signal_32.o
+else
+ifdef CONFIG_COMPAT
+obj-y += signal_32.o
+endif
+endif
+obj-$(CONFIG_PPC64) += setup_64.o signal_64.o \
paca.o nvram_64.o firmware.o \
syscall_64.o
+ifdef CONFIG_COMPAT
+obj-$(CONFIG_PPC64) += sys_ppc32.o ptrace32.o
+endif
obj-$(CONFIG_VDSO32) += vdso32/
obj-$(CONFIG_PPC_WATCHDOG) += watchdog.o
obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 2ec825a85f5b..a2dbf216f607 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -51,8 +51,10 @@
SYS_CALL_TABLE:
.tc sys_call_table[TC],sys_call_table
+#ifdef CONFIG_COMPAT
COMPAT_SYS_CALL_TABLE:
.tc compat_sys_call_table[TC],compat_sys_call_table
+#endif
/* This value is used to mark exception frames on the stack. */
exception_marker:
diff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c
index 60436432399f..71f4f1794f86 100644
--- a/arch/powerpc/kernel/signal.c
+++ b/arch/powerpc/kernel/signal.c
@@ -277,14 +277,15 @@ static void do_signal(struct task_struct *tsk)
rseq_signal_deliver(&ksig, tsk->thread.regs);
+#ifdef CONFIG_COMPAT
if (is32) {
if (ksig.ka.sa.sa_flags & SA_SIGINFO)
ret = handle_rt_signal32(&ksig, oldset, tsk);
else
ret = handle_signal32(&ksig, oldset, tsk);
- } else {
+ } else
+#endif /* CONFIG_COMPAT */
ret = handle_rt_signal64(&ksig, oldset, tsk);
- }
tsk->thread.regs->trap = 0;
signal_setup_done(ret, &ksig, test_thread_flag(TIF_SINGLESTEP));
diff --git a/arch/powerpc/kernel/syscall_64.c b/arch/powerpc/kernel/syscall_64.c
index 98ed970796d5..3f48262b512d 100644
--- a/arch/powerpc/kernel/syscall_64.c
+++ b/arch/powerpc/kernel/syscall_64.c
@@ -100,6 +100,7 @@ long system_call_exception(long r3, long r4, long r5, long r6, long r7, long r8,
/* May be faster to do array_index_nospec? */
barrier_nospec();
+#ifdef CONFIG_COMPAT
if (unlikely(ti_flags & _TIF_32BIT)) {
f = (void *)compat_sys_call_table[r0];
@@ -110,9 +111,9 @@ long system_call_exception(long r3, long r4, long r5, long r6, long r7, long r8,
r7 &= 0x00000000ffffffffULL;
r8 &= 0x00000000ffffffffULL;
- } else {
+ } else
+#endif /* CONFIG_COMPAT */
f = (void *)sys_call_table[r0];
- }
return f(r3, r4, r5, r6, r7, r8);
}
diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index d60598113a9f..2ab9327e44c4 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -667,7 +667,7 @@ static void __init vdso_setup_syscall_map(void)
{
unsigned int i;
extern unsigned long *sys_call_table;
-#ifdef CONFIG_PPC64
+#if defined(CONFIG_PPC64) && defined(CONFIG_COMPAT)
extern unsigned long *compat_sys_call_table;
#endif
extern unsigned long sys_ni_syscall;
@@ -678,9 +678,11 @@ static void __init vdso_setup_syscall_map(void)
if (sys_call_table[i] != sys_ni_syscall)
vdso_data->syscall_map_64[i >> 5] |=
0x80000000UL >> (i & 0x1f);
+#ifdef CONFIG_COMPAT
if (compat_sys_call_table[i] != sys_ni_syscall)
vdso_data->syscall_map_32[i >> 5] |=
0x80000000UL >> (i & 0x1f);
+#endif /* CONFIG_COMPAT */
#else /* CONFIG_PPC64 */
if (sys_call_table[i] != sys_ni_syscall)
vdso_data->syscall_map_32[i >> 5] |=
diff --git a/arch/powerpc/perf/callchain.c b/arch/powerpc/perf/callchain.c
index c84bbd4298a0..0a4565820d6c 100644
--- a/arch/powerpc/perf/callchain.c
+++ b/arch/powerpc/perf/callchain.c
@@ -15,7 +15,7 @@
#include <asm/sigcontext.h>
#include <asm/ucontext.h>
#include <asm/vdso.h>
-#ifdef CONFIG_PPC64
+#if defined(CONFIG_PPC64) && defined(CONFIG_COMPAT)
#include "../kernel/ppc32.h"
#endif
#include <asm/pte-walk.h>
@@ -165,6 +165,7 @@ static int read_user_stack_64(unsigned long __user *ptr, unsigned long *ret)
return read_user_stack_slow(ptr, ret, 8);
}
+#ifdef CONFIG_COMPAT
static int read_user_stack_32(unsigned int __user *ptr, unsigned int *ret)
{
if ((unsigned long)ptr > TASK_SIZE - sizeof(unsigned int) ||
@@ -180,6 +181,7 @@ static int read_user_stack_32(unsigned int __user *ptr, unsigned int *ret)
return read_user_stack_slow(ptr, ret, 4);
}
+#endif
static inline int valid_user_sp(unsigned long sp, int is_64)
{
@@ -341,6 +343,7 @@ static inline int valid_user_sp(unsigned long sp, int is_64)
#endif /* CONFIG_PPC64 */
+#if !defined(CONFIG_PPC64) || defined(CONFIG_COMPAT)
/*
* Layout for non-RT signal frames
*/
@@ -482,12 +485,15 @@ static void perf_callchain_user_32(struct perf_callchain_entry_ctx *entry,
sp = next_sp;
}
}
+#endif /* 32bit */
void
perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs)
{
- if (current_is_64bit())
- perf_callchain_user_64(entry, regs);
- else
+#if !defined(CONFIG_PPC64) || defined(CONFIG_COMPAT)
+ if (!current_is_64bit())
perf_callchain_user_32(entry, regs);
+ else
+#endif
+ perf_callchain_user_64(entry, regs);
}
--
2.22.0
next prev parent reply other threads:[~2019-08-27 20:21 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-27 20:21 [PATCH 0/4] Disable compat cruft on ppc64le Michal Suchanek
2019-08-27 20:21 ` [PATCH 1/4] fs: always build llseek Michal Suchanek
2019-08-28 15:15 ` Christoph Hellwig
2019-08-28 16:15 ` Michal Suchánek
2019-08-29 6:22 ` Christoph Hellwig
2019-08-29 10:06 ` Michal Suchánek
2019-08-28 18:13 ` Eric W. Biederman
2019-08-28 18:16 ` Eric W. Biederman
2019-08-27 20:21 ` [PATCH 2/4] powerpc: move common register copy functions from signal_32.c to signal.c Michal Suchanek
2019-08-27 20:21 ` Michal Suchanek [this message]
2019-08-27 20:36 ` [PATCH 3/4] powerpc/64: make buildable without CONFIG_COMPAT Michal Suchánek
2019-08-27 20:21 ` [PATCH 4/4] powerpc/64: Disable COMPAT if littleendian Michal Suchanek
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