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powerpc/64: make buildable without CONFIG_COMPAT

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There are numerous references to 32bit functions in generic and 64bit
code so ifdef them out.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/e5619617020ef3a1f54f0c076e7d74cb9ec9f3bf.1584699455.git.msuchanek@suse.de
This commit is contained in:
Michal Suchanek 2020-03-20 11:20:16 +01:00 committed by Michael Ellerman
parent 2910428106
commit 0a7601b6ff
8 changed files with 20 additions and 13 deletions
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4
arch/powerpc/include/asm/thread_info.h
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@ -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)

5
arch/powerpc/kernel/Makefile
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@ -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

2
arch/powerpc/kernel/entry_64.S
View File

@ -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:

2
arch/powerpc/kernel/ptrace/Makefile
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@ -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

3
arch/powerpc/kernel/signal.c
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@ -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

6
arch/powerpc/kernel/syscall_64.c
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@ -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;

3
arch/powerpc/kernel/vdso.c
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@ -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 */

8
arch/powerpc/perf/callchain.c
View File

@ -15,7 +15,7 @@
#include <asm/sigcontext.h>
#include <asm/ucontext.h>
#include <asm/vdso.h>
#ifdef CONFIG_PPC64
#ifdef CONFIG_COMPAT
#include "../kernel/ppc32.h"
#endif
#include <asm/pte-walk.h>
@ -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)