From 0a7601b6ffddec11d7cc0bc3264daf0159f5e1a6 Mon Sep 17 00:00:00 2001 From: Michal Suchanek Date: Fri, 20 Mar 2020 11:20:16 +0100 Subject: powerpc/64: make buildable without CONFIG_COMPAT There are numerous references to 32bit functions in generic and 64bit code so ifdef them out. Signed-off-by: Michal Suchanek Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/e5619617020ef3a1f54f0c076e7d74cb9ec9f3bf.1584699455.git.msuchanek@suse.de --- arch/powerpc/include/asm/thread_info.h | 4 ++-- arch/powerpc/kernel/Makefile | 5 +++-- arch/powerpc/kernel/entry_64.S | 2 ++ arch/powerpc/kernel/ptrace/Makefile | 2 +- arch/powerpc/kernel/signal.c | 3 +-- arch/powerpc/kernel/syscall_64.c | 6 ++---- arch/powerpc/kernel/vdso.c | 3 ++- arch/powerpc/perf/callchain.c | 8 +++++++- 8 files changed, 20 insertions(+), 13 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h index a2270749b282..ca6c97025704 100644 --- a/arch/powerpc/include/asm/thread_info.h +++ b/arch/powerpc/include/asm/thread_info.h @@ -162,10 +162,10 @@ static inline bool test_thread_local_flags(unsigned int flags) return (ti->local_flags & flags) != 0; } -#ifdef CONFIG_PPC64 +#ifdef CONFIG_COMPAT #define is_32bit_task() (test_thread_flag(TIF_32BIT)) #else -#define is_32bit_task() (1) +#define is_32bit_task() (IS_ENABLED(CONFIG_PPC32)) #endif #if defined(CONFIG_PPC64) diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index 570660efbb3d..1c4385852d3d 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -40,16 +40,17 @@ CFLAGS_btext.o += -DDISABLE_BRANCH_PROFILING endif obj-y := cputable.o syscalls.o \ - irq.o align.o signal_32.o pmc.o vdso.o \ + irq.o align.o signal_$(BITS).o pmc.o vdso.o \ process.o systbl.o idle.o \ signal.o sysfs.o cacheinfo.o time.o \ prom.o traps.o setup-common.o \ udbg.o misc.o io.o misc_$(BITS).o \ of_platform.o prom_parse.o obj-y += ptrace/ -obj-$(CONFIG_PPC64) += setup_64.o sys_ppc32.o signal_64.o \ +obj-$(CONFIG_PPC64) += setup_64.o \ paca.o nvram_64.o firmware.o note.o \ syscall_64.o +obj-$(CONFIG_COMPAT) += sys_ppc32.o signal_32.o obj-$(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 63f0a4414618..9a1e5d636dea 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -52,8 +52,10 @@ 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/ptrace/Makefile b/arch/powerpc/kernel/ptrace/Makefile index e9d97c2d063e..c2f2402ebc8c 100644 --- a/arch/powerpc/kernel/ptrace/Makefile +++ b/arch/powerpc/kernel/ptrace/Makefile @@ -6,7 +6,7 @@ CFLAGS_ptrace-view.o += -DUTS_MACHINE='"$(UTS_MACHINE)"' obj-y += ptrace.o ptrace-view.o -obj-$(CONFIG_PPC64) += ptrace32.o +obj-$(CONFIG_COMPAT) += ptrace32.o obj-$(CONFIG_VSX) += ptrace-vsx.o ifneq ($(CONFIG_VSX),y) obj-y += ptrace-novsx.o diff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c index 4b0152108f61..a264989626fd 100644 --- a/arch/powerpc/kernel/signal.c +++ b/arch/powerpc/kernel/signal.c @@ -247,7 +247,6 @@ static void do_signal(struct task_struct *tsk) sigset_t *oldset = sigmask_to_save(); struct ksignal ksig = { .sig = 0 }; int ret; - int is32 = is_32bit_task(); BUG_ON(tsk != current); @@ -277,7 +276,7 @@ static void do_signal(struct task_struct *tsk) rseq_signal_deliver(&ksig, tsk->thread.regs); - if (is32) { + if (is_32bit_task()) { if (ksig.ka.sa.sa_flags & SA_SIGINFO) ret = handle_rt_signal32(&ksig, oldset, tsk); else diff --git a/arch/powerpc/kernel/syscall_64.c b/arch/powerpc/kernel/syscall_64.c index cf06eb443a80..c74295a7765b 100644 --- a/arch/powerpc/kernel/syscall_64.c +++ b/arch/powerpc/kernel/syscall_64.c @@ -22,7 +22,6 @@ notrace long system_call_exception(long r3, long r4, long r5, long r6, long r7, long r8, unsigned long r0, struct pt_regs *regs) { - unsigned long ti_flags; syscall_fn f; if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG)) @@ -60,8 +59,7 @@ notrace long system_call_exception(long r3, long r4, long r5, local_irq_enable(); - ti_flags = current_thread_info()->flags; - if (unlikely(ti_flags & _TIF_SYSCALL_DOTRACE)) { + if (unlikely(current_thread_info()->flags & _TIF_SYSCALL_DOTRACE)) { /* * We use the return value of do_syscall_trace_enter() as the * syscall number. If the syscall was rejected for any reason @@ -86,7 +84,7 @@ notrace long system_call_exception(long r3, long r4, long r5, /* May be faster to do array_index_nospec? */ barrier_nospec(); - if (unlikely(ti_flags & _TIF_32BIT)) { + if (unlikely(is_32bit_task())) { f = (void *)compat_sys_call_table[r0]; r3 &= 0x00000000ffffffffULL; diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c index d3b77c15f9ce..f38f26e844b6 100644 --- a/arch/powerpc/kernel/vdso.c +++ b/arch/powerpc/kernel/vdso.c @@ -651,7 +651,8 @@ 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); - if (compat_sys_call_table[i] != sys_ni_syscall) + if (IS_ENABLED(CONFIG_COMPAT) && + compat_sys_call_table[i] != sys_ni_syscall) vdso_data->syscall_map_32[i >> 5] |= 0x80000000UL >> (i & 0x1f); #else /* CONFIG_PPC64 */ diff --git a/arch/powerpc/perf/callchain.c b/arch/powerpc/perf/callchain.c index 001d0473a61f..b5afd0bec4f8 100644 --- a/arch/powerpc/perf/callchain.c +++ b/arch/powerpc/perf/callchain.c @@ -15,7 +15,7 @@ #include #include #include -#ifdef CONFIG_PPC64 +#ifdef CONFIG_COMPAT #include "../kernel/ppc32.h" #endif #include @@ -284,6 +284,7 @@ static inline void perf_callchain_user_64(struct perf_callchain_entry_ctx *entry #endif /* CONFIG_PPC64 */ +#if defined(CONFIG_PPC32) || defined(CONFIG_COMPAT) /* * On 32-bit we just access the address and let hash_page create a * HPTE if necessary, so there is no need to fall back to reading @@ -447,6 +448,11 @@ static void perf_callchain_user_32(struct perf_callchain_entry_ctx *entry, sp = next_sp; } } +#else /* 32bit */ +static void perf_callchain_user_32(struct perf_callchain_entry_ctx *entry, + struct pt_regs *regs) +{} +#endif /* 32bit */ void perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) -- cgit v1.2.3