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-rw-r--r--arch/powerpc/Kconfig2
-rw-r--r--arch/powerpc/include/asm/atomic.h44
-rw-r--r--arch/powerpc/include/asm/processor.h2
-rw-r--r--arch/powerpc/kernel/exceptions-64s.S2
-rw-r--r--arch/powerpc/kernel/process.c2
-rw-r--r--arch/powerpc/kernel/ptrace.c1
-rw-r--r--arch/powerpc/kernel/rtas.c3
-rw-r--r--arch/powerpc/kernel/signal_32.c6
-rw-r--r--arch/powerpc/kernel/signal_64.c2
-rw-r--r--arch/powerpc/kernel/suspend.c1
-rw-r--r--arch/powerpc/kernel/traps.c4
-rw-r--r--arch/powerpc/mm/book3s64/mmu_context.c55
-rw-r--r--arch/powerpc/mm/fault.c5
-rw-r--r--arch/powerpc/platforms/cell/spufs/fault.c9
-rw-r--r--arch/powerpc/platforms/cell/spufs/run.c2
-rw-r--r--arch/powerpc/platforms/cell/spufs/sched.c2
-rw-r--r--arch/powerpc/sysdev/Kconfig2
17 files changed, 89 insertions, 55 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 8c1c636308c8..3b795a0cab62 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -898,7 +898,7 @@ config PPC_MEM_KEYS
page-based protections, but without requiring modification of the
page tables when an application changes protection domains.
- For details, see Documentation/vm/protection-keys.rst
+ For details, see Documentation/core-api/protection-keys.rst
If unsure, say y.
diff --git a/arch/powerpc/include/asm/atomic.h b/arch/powerpc/include/asm/atomic.h
index 52eafaf74054..31c231ea56b7 100644
--- a/arch/powerpc/include/asm/atomic.h
+++ b/arch/powerpc/include/asm/atomic.h
@@ -297,24 +297,24 @@ static __inline__ int atomic_dec_if_positive(atomic_t *v)
#define ATOMIC64_INIT(i) { (i) }
-static __inline__ long atomic64_read(const atomic64_t *v)
+static __inline__ s64 atomic64_read(const atomic64_t *v)
{
- long t;
+ s64 t;
__asm__ __volatile__("ld%U1%X1 %0,%1" : "=r"(t) : "m"(v->counter));
return t;
}
-static __inline__ void atomic64_set(atomic64_t *v, long i)
+static __inline__ void atomic64_set(atomic64_t *v, s64 i)
{
__asm__ __volatile__("std%U0%X0 %1,%0" : "=m"(v->counter) : "r"(i));
}
#define ATOMIC64_OP(op, asm_op) \
-static __inline__ void atomic64_##op(long a, atomic64_t *v) \
+static __inline__ void atomic64_##op(s64 a, atomic64_t *v) \
{ \
- long t; \
+ s64 t; \
\
__asm__ __volatile__( \
"1: ldarx %0,0,%3 # atomic64_" #op "\n" \
@@ -327,10 +327,10 @@ static __inline__ void atomic64_##op(long a, atomic64_t *v) \
}
#define ATOMIC64_OP_RETURN_RELAXED(op, asm_op) \
-static inline long \
-atomic64_##op##_return_relaxed(long a, atomic64_t *v) \
+static inline s64 \
+atomic64_##op##_return_relaxed(s64 a, atomic64_t *v) \
{ \
- long t; \
+ s64 t; \
\
__asm__ __volatile__( \
"1: ldarx %0,0,%3 # atomic64_" #op "_return_relaxed\n" \
@@ -345,10 +345,10 @@ atomic64_##op##_return_relaxed(long a, atomic64_t *v) \
}
#define ATOMIC64_FETCH_OP_RELAXED(op, asm_op) \
-static inline long \
-atomic64_fetch_##op##_relaxed(long a, atomic64_t *v) \
+static inline s64 \
+atomic64_fetch_##op##_relaxed(s64 a, atomic64_t *v) \
{ \
- long res, t; \
+ s64 res, t; \
\
__asm__ __volatile__( \
"1: ldarx %0,0,%4 # atomic64_fetch_" #op "_relaxed\n" \
@@ -396,7 +396,7 @@ ATOMIC64_OPS(xor, xor)
static __inline__ void atomic64_inc(atomic64_t *v)
{
- long t;
+ s64 t;
__asm__ __volatile__(
"1: ldarx %0,0,%2 # atomic64_inc\n\
@@ -409,9 +409,9 @@ static __inline__ void atomic64_inc(atomic64_t *v)
}
#define atomic64_inc atomic64_inc
-static __inline__ long atomic64_inc_return_relaxed(atomic64_t *v)
+static __inline__ s64 atomic64_inc_return_relaxed(atomic64_t *v)
{
- long t;
+ s64 t;
__asm__ __volatile__(
"1: ldarx %0,0,%2 # atomic64_inc_return_relaxed\n"
@@ -427,7 +427,7 @@ static __inline__ long atomic64_inc_return_relaxed(atomic64_t *v)
static __inline__ void atomic64_dec(atomic64_t *v)
{
- long t;
+ s64 t;
__asm__ __volatile__(
"1: ldarx %0,0,%2 # atomic64_dec\n\
@@ -440,9 +440,9 @@ static __inline__ void atomic64_dec(atomic64_t *v)
}
#define atomic64_dec atomic64_dec
-static __inline__ long atomic64_dec_return_relaxed(atomic64_t *v)
+static __inline__ s64 atomic64_dec_return_relaxed(atomic64_t *v)
{
- long t;
+ s64 t;
__asm__ __volatile__(
"1: ldarx %0,0,%2 # atomic64_dec_return_relaxed\n"
@@ -463,9 +463,9 @@ static __inline__ long atomic64_dec_return_relaxed(atomic64_t *v)
* Atomically test *v and decrement if it is greater than 0.
* The function returns the old value of *v minus 1.
*/
-static __inline__ long atomic64_dec_if_positive(atomic64_t *v)
+static __inline__ s64 atomic64_dec_if_positive(atomic64_t *v)
{
- long t;
+ s64 t;
__asm__ __volatile__(
PPC_ATOMIC_ENTRY_BARRIER
@@ -502,9 +502,9 @@ static __inline__ long atomic64_dec_if_positive(atomic64_t *v)
* Atomically adds @a to @v, so long as it was not @u.
* Returns the old value of @v.
*/
-static __inline__ long atomic64_fetch_add_unless(atomic64_t *v, long a, long u)
+static __inline__ s64 atomic64_fetch_add_unless(atomic64_t *v, s64 a, s64 u)
{
- long t;
+ s64 t;
__asm__ __volatile__ (
PPC_ATOMIC_ENTRY_BARRIER
@@ -534,7 +534,7 @@ static __inline__ long atomic64_fetch_add_unless(atomic64_t *v, long a, long u)
*/
static __inline__ int atomic64_inc_not_zero(atomic64_t *v)
{
- long t1, t2;
+ s64 t1, t2;
__asm__ __volatile__ (
PPC_ATOMIC_ENTRY_BARRIER
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index ef573fe9873e..a9993e7a443b 100644
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -346,8 +346,6 @@ static inline unsigned long __pack_fe01(unsigned int fpmode)
#define spin_cpu_relax() barrier()
-#define spin_cpu_yield() spin_cpu_relax()
-
#define spin_end() HMT_medium()
#define spin_until_cond(cond) \
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 6b86055e5251..73ba246ca11d 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -315,7 +315,7 @@ TRAMP_REAL_BEGIN(machine_check_common_early)
mfspr r11,SPRN_DSISR /* Save DSISR */
std r11,_DSISR(r1)
std r9,_CCR(r1) /* Save CR in stackframe */
- kuap_save_amr_and_lock r9, r10, cr1
+ /* We don't touch AMR here, we never go to virtual mode */
/* Save r9 through r13 from EXMC save area to stack frame. */
EXCEPTION_PROLOG_COMMON_2(PACA_EXMC)
mfmsr r11 /* get MSR value */
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index f0fbbf6a6a1f..b448b0938299 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -639,7 +639,7 @@ void do_break (struct pt_regs *regs, unsigned long address,
hw_breakpoint_disable();
/* Deliver the signal to userspace */
- force_sig_fault(SIGTRAP, TRAP_HWBKPT, (void __user *)address, current);
+ force_sig_fault(SIGTRAP, TRAP_HWBKPT, (void __user *)address);
}
#endif /* CONFIG_PPC_ADV_DEBUG_REGS */
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 684b0b315c32..8c92febf5f44 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -2521,7 +2521,6 @@ void ptrace_disable(struct task_struct *child)
{
/* make sure the single step bit is not set. */
user_disable_single_step(child);
- clear_tsk_thread_flag(child, TIF_SYSCALL_EMU);
}
#ifdef CONFIG_PPC_ADV_DEBUG_REGS
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index b824f4c69622..0ab4c72515c4 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -990,8 +990,7 @@ int rtas_ibm_suspend_me(u64 handle)
/* Call function on all CPUs. One of us will make the
* rtas call
*/
- if (on_each_cpu(rtas_percpu_suspend_me, &data, 0))
- atomic_set(&data.error, -EINVAL);
+ on_each_cpu(rtas_percpu_suspend_me, &data, 0);
wait_for_completion(&done);
diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c
index a2b74e057904..f50b708d6d77 100644
--- a/arch/powerpc/kernel/signal_32.c
+++ b/arch/powerpc/kernel/signal_32.c
@@ -1245,7 +1245,7 @@ SYSCALL_DEFINE0(rt_sigreturn)
current->comm, current->pid,
rt_sf, regs->nip, regs->link);
- force_sig(SIGSEGV, current);
+ force_sig(SIGSEGV);
return 0;
}
@@ -1334,7 +1334,7 @@ SYSCALL_DEFINE3(debug_setcontext, struct ucontext __user *, ctx,
current->comm, current->pid,
ctx, regs->nip, regs->link);
- force_sig(SIGSEGV, current);
+ force_sig(SIGSEGV);
goto out;
}
@@ -1512,6 +1512,6 @@ badframe:
current->comm, current->pid,
addr, regs->nip, regs->link);
- force_sig(SIGSEGV, current);
+ force_sig(SIGSEGV);
return 0;
}
diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c
index 4292ea39baa4..2f80e270c7b0 100644
--- a/arch/powerpc/kernel/signal_64.c
+++ b/arch/powerpc/kernel/signal_64.c
@@ -808,7 +808,7 @@ badframe:
current->comm, current->pid, "rt_sigreturn",
(long)uc, regs->nip, regs->link);
- force_sig(SIGSEGV, current);
+ force_sig(SIGSEGV);
return 0;
}
diff --git a/arch/powerpc/kernel/suspend.c b/arch/powerpc/kernel/suspend.c
index c612d50c9d18..b84992c10854 100644
--- a/arch/powerpc/kernel/suspend.c
+++ b/arch/powerpc/kernel/suspend.c
@@ -7,6 +7,7 @@
*/
#include <linux/mm.h>
+#include <linux/suspend.h>
#include <asm/page.h>
#include <asm/sections.h>
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 47df30982de1..11caa0291254 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -297,7 +297,7 @@ NOKPROBE_SYMBOL(die);
void user_single_step_report(struct pt_regs *regs)
{
- force_sig_fault(SIGTRAP, TRAP_TRACE, (void __user *)regs->nip, current);
+ force_sig_fault(SIGTRAP, TRAP_TRACE, (void __user *)regs->nip);
}
static void show_signal_msg(int signr, struct pt_regs *regs, int code,
@@ -363,7 +363,7 @@ void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr)
if (!exception_common(signr, regs, code, addr))
return;
- force_sig_fault(signr, code, (void __user *)addr, current);
+ force_sig_fault(signr, code, (void __user *)addr);
}
/*
diff --git a/arch/powerpc/mm/book3s64/mmu_context.c b/arch/powerpc/mm/book3s64/mmu_context.c
index bb70391401f7..794404d50a85 100644
--- a/arch/powerpc/mm/book3s64/mmu_context.c
+++ b/arch/powerpc/mm/book3s64/mmu_context.c
@@ -50,20 +50,52 @@ EXPORT_SYMBOL_GPL(hash__alloc_context_id);
void slb_setup_new_exec(void);
+static int realloc_context_ids(mm_context_t *ctx)
+{
+ int i, id;
+
+ /*
+ * id 0 (aka. ctx->id) is special, we always allocate a new one, even if
+ * there wasn't one allocated previously (which happens in the exec
+ * case where ctx is newly allocated).
+ *
+ * We have to be a bit careful here. We must keep the existing ids in
+ * the array, so that we can test if they're non-zero to decide if we
+ * need to allocate a new one. However in case of error we must free the
+ * ids we've allocated but *not* any of the existing ones (or risk a
+ * UAF). That's why we decrement i at the start of the error handling
+ * loop, to skip the id that we just tested but couldn't reallocate.
+ */
+ for (i = 0; i < ARRAY_SIZE(ctx->extended_id); i++) {
+ if (i == 0 || ctx->extended_id[i]) {
+ id = hash__alloc_context_id();
+ if (id < 0)
+ goto error;
+
+ ctx->extended_id[i] = id;
+ }
+ }
+
+ /* The caller expects us to return id */
+ return ctx->id;
+
+error:
+ for (i--; i >= 0; i--) {
+ if (ctx->extended_id[i])
+ ida_free(&mmu_context_ida, ctx->extended_id[i]);
+ }
+
+ return id;
+}
+
static int hash__init_new_context(struct mm_struct *mm)
{
int index;
- index = hash__alloc_context_id();
- if (index < 0)
- return index;
-
mm->context.hash_context = kmalloc(sizeof(struct hash_mm_context),
GFP_KERNEL);
- if (!mm->context.hash_context) {
- ida_free(&mmu_context_ida, index);
+ if (!mm->context.hash_context)
return -ENOMEM;
- }
/*
* The old code would re-promote on fork, we don't do that when using
@@ -91,13 +123,20 @@ static int hash__init_new_context(struct mm_struct *mm)
mm->context.hash_context->spt = kmalloc(sizeof(struct subpage_prot_table),
GFP_KERNEL);
if (!mm->context.hash_context->spt) {
- ida_free(&mmu_context_ida, index);
kfree(mm->context.hash_context);
return -ENOMEM;
}
}
#endif
+ }
+ index = realloc_context_ids(&mm->context);
+ if (index < 0) {
+#ifdef CONFIG_PPC_SUBPAGE_PROT
+ kfree(mm->context.hash_context->spt);
+#endif
+ kfree(mm->context.hash_context);
+ return index;
}
pkey_mm_init(mm);
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index ec6b7ad70659..d989592b6fc8 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -178,13 +178,12 @@ static int do_sigbus(struct pt_regs *regs, unsigned long address,
if (fault & VM_FAULT_HWPOISON)
lsb = PAGE_SHIFT;
- force_sig_mceerr(BUS_MCEERR_AR, (void __user *)address, lsb,
- current);
+ force_sig_mceerr(BUS_MCEERR_AR, (void __user *)address, lsb);
return 0;
}
#endif
- force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)address, current);
+ force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)address);
return 0;
}
diff --git a/arch/powerpc/platforms/cell/spufs/fault.c b/arch/powerpc/platforms/cell/spufs/fault.c
index 6dfd2cb1bce7..24adbe3c605c 100644
--- a/arch/powerpc/platforms/cell/spufs/fault.c
+++ b/arch/powerpc/platforms/cell/spufs/fault.c
@@ -31,22 +31,21 @@ static void spufs_handle_event(struct spu_context *ctx,
switch (type) {
case SPE_EVENT_INVALID_DMA:
- force_sig_fault(SIGBUS, BUS_OBJERR, NULL, current);
+ force_sig_fault(SIGBUS, BUS_OBJERR, NULL);
break;
case SPE_EVENT_SPE_DATA_STORAGE:
ctx->ops->restart_dma(ctx);
- force_sig_fault(SIGSEGV, SEGV_ACCERR, (void __user *)ea,
- current);
+ force_sig_fault(SIGSEGV, SEGV_ACCERR, (void __user *)ea);
break;
case SPE_EVENT_DMA_ALIGNMENT:
/* DAR isn't set for an alignment fault :( */
- force_sig_fault(SIGBUS, BUS_ADRALN, NULL, current);
+ force_sig_fault(SIGBUS, BUS_ADRALN, NULL);
break;
case SPE_EVENT_SPE_ERROR:
force_sig_fault(
SIGILL, ILL_ILLOPC,
(void __user *)(unsigned long)
- ctx->ops->npc_read(ctx) - 4, current);
+ ctx->ops->npc_read(ctx) - 4);
break;
}
}
diff --git a/arch/powerpc/platforms/cell/spufs/run.c b/arch/powerpc/platforms/cell/spufs/run.c
index 07f82d7395ff..3f2380f40f99 100644
--- a/arch/powerpc/platforms/cell/spufs/run.c
+++ b/arch/powerpc/platforms/cell/spufs/run.c
@@ -443,7 +443,7 @@ long spufs_run_spu(struct spu_context *ctx, u32 *npc, u32 *event)
else if (unlikely((status & SPU_STATUS_STOPPED_BY_STOP)
&& (status >> SPU_STOP_STATUS_SHIFT) == 0x3fff)) {
- force_sig(SIGTRAP, current);
+ force_sig(SIGTRAP);
ret = -ERESTARTSYS;
}
diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c
index e56b553de27b..f18d5067cd0f 100644
--- a/arch/powerpc/platforms/cell/spufs/sched.c
+++ b/arch/powerpc/platforms/cell/spufs/sched.c
@@ -128,7 +128,7 @@ void __spu_update_sched_info(struct spu_context *ctx)
* runqueue. The context will be rescheduled on the proper node
* if it is timesliced or preempted.
*/
- cpumask_copy(&ctx->cpus_allowed, &current->cpus_allowed);
+ cpumask_copy(&ctx->cpus_allowed, current->cpus_ptr);
/* Save the current cpu id for spu interrupt routing. */
ctx->last_ran = raw_smp_processor_id();
diff --git a/arch/powerpc/sysdev/Kconfig b/arch/powerpc/sysdev/Kconfig
index e0dbec780fe9..d23288c4abf6 100644
--- a/arch/powerpc/sysdev/Kconfig
+++ b/arch/powerpc/sysdev/Kconfig
@@ -1,6 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
# For a description of the syntax of this configuration file,
-# see Documentation/kbuild/kconfig-language.txt.
+# see Documentation/kbuild/kconfig-language.rst.
#
config PPC4xx_PCI_EXPRESS
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-10 08:02:46 +0300