Merge tag 'loongarch-fixes-6.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch fixes from Huacai Chen:
"Fix two build warnings, a copy_thread() bug, two page table
manipulation bugs, and some trivial cleanups"
* tag 'loongarch-fixes-6.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
docs/zh_CN/LoongArch: Fix wrong description of FPRs Note
LoongArch: Fix unsigned comparison with less than zero
LoongArch: Set _PAGE_DIRTY only if _PAGE_MODIFIED is set in {pmd,pte}_mkwrite()
LoongArch: Set _PAGE_DIRTY only if _PAGE_WRITE is set in {pmd,pte}_mkdirty()
LoongArch: Clear FPU/SIMD thread info flags for kernel thread
LoongArch: SMP: Change prefix from loongson3 to loongson
LoongArch: Combine acpi_boot_table_init() and acpi_boot_init()
LoongArch: Makefile: Use "grep -E" instead of "egrep"
diff --git a/Documentation/translations/zh_CN/loongarch/introduction.rst b/Documentation/translations/zh_CN/loongarch/introduction.rst
index 128878f..f3ec25b 100644
--- a/Documentation/translations/zh_CN/loongarch/introduction.rst
+++ b/Documentation/translations/zh_CN/loongarch/introduction.rst
@@ -70,8 +70,8 @@
================= ================== =================== ==========
.. note::
- 注意：在一些遗留代码中有时可能见到 ``$v0`` 和 ``$v1`` ，它们是
- ``$a0`` 和 ``$a1`` 的别名，属于已经废弃的用法。
+ 注意：在一些遗留代码中有时可能见到 ``$fv0`` 和 ``$fv1`` ，它们是
+ ``$fa0`` 和 ``$fa1`` 的别名，属于已经废弃的用法。
向量寄存器
diff --git a/arch/loongarch/Makefile b/arch/loongarch/Makefile
index f4cb54d..01b57b7 100644
--- a/arch/loongarch/Makefile
+++ b/arch/loongarch/Makefile
@@ -97,7 +97,7 @@
ifdef CONFIG_LOONGARCH
CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
- egrep -vw '__GNUC_(MINOR_|PATCHLEVEL_)?_' | \
+ grep -E -vw '__GNUC_(MINOR_|PATCHLEVEL_)?_' | \
sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
endif
diff --git a/arch/loongarch/include/asm/irq.h b/arch/loongarch/include/asm/irq.h
index d06d454..5332b14 100644
--- a/arch/loongarch/include/asm/irq.h
+++ b/arch/loongarch/include/asm/irq.h
@@ -117,7 +117,7 @@
extern struct fwnode_handle *pch_lpc_handle;
extern struct fwnode_handle *pch_pic_handle[MAX_IO_PICS];
-extern irqreturn_t loongson3_ipi_interrupt(int irq, void *dev);
+extern irqreturn_t loongson_ipi_interrupt(int irq, void *dev);
#include <asm-generic/irq.h>
diff --git a/arch/loongarch/include/asm/pgtable.h b/arch/loongarch/include/asm/pgtable.h
index 946704b..aa0e0e0 100644
--- a/arch/loongarch/include/asm/pgtable.h
+++ b/arch/loongarch/include/asm/pgtable.h
@@ -349,13 +349,17 @@
static inline pte_t pte_mkdirty(pte_t pte)
{
- pte_val(pte) |= (_PAGE_DIRTY | _PAGE_MODIFIED);
+ pte_val(pte) |= _PAGE_MODIFIED;
+ if (pte_val(pte) & _PAGE_WRITE)
+ pte_val(pte) |= _PAGE_DIRTY;
return pte;
}
static inline pte_t pte_mkwrite(pte_t pte)
{
- pte_val(pte) |= (_PAGE_WRITE | _PAGE_DIRTY);
+ pte_val(pte) |= _PAGE_WRITE;
+ if (pte_val(pte) & _PAGE_MODIFIED)
+ pte_val(pte) |= _PAGE_DIRTY;
return pte;
}
@@ -455,7 +459,9 @@
static inline pmd_t pmd_mkwrite(pmd_t pmd)
{
- pmd_val(pmd) |= (_PAGE_WRITE | _PAGE_DIRTY);
+ pmd_val(pmd) |= _PAGE_WRITE;
+ if (pmd_val(pmd) & _PAGE_MODIFIED)
+ pmd_val(pmd) |= _PAGE_DIRTY;
return pmd;
}
@@ -478,7 +484,9 @@
static inline pmd_t pmd_mkdirty(pmd_t pmd)
{
- pmd_val(pmd) |= (_PAGE_DIRTY | _PAGE_MODIFIED);
+ pmd_val(pmd) |= _PAGE_MODIFIED;
+ if (pmd_val(pmd) & _PAGE_WRITE)
+ pmd_val(pmd) |= _PAGE_DIRTY;
return pmd;
}
diff --git a/arch/loongarch/include/asm/smp.h b/arch/loongarch/include/asm/smp.h
index 71189b2..3dd172d 100644
--- a/arch/loongarch/include/asm/smp.h
+++ b/arch/loongarch/include/asm/smp.h
@@ -19,21 +19,21 @@
extern cpumask_t cpu_core_map[];
extern cpumask_t cpu_foreign_map[];
-void loongson3_smp_setup(void);
-void loongson3_prepare_cpus(unsigned int max_cpus);
-void loongson3_boot_secondary(int cpu, struct task_struct *idle);
-void loongson3_init_secondary(void);
-void loongson3_smp_finish(void);
-void loongson3_send_ipi_single(int cpu, unsigned int action);
-void loongson3_send_ipi_mask(const struct cpumask *mask, unsigned int action);
+void loongson_smp_setup(void);
+void loongson_prepare_cpus(unsigned int max_cpus);
+void loongson_boot_secondary(int cpu, struct task_struct *idle);
+void loongson_init_secondary(void);
+void loongson_smp_finish(void);
+void loongson_send_ipi_single(int cpu, unsigned int action);
+void loongson_send_ipi_mask(const struct cpumask *mask, unsigned int action);
#ifdef CONFIG_HOTPLUG_CPU
-int loongson3_cpu_disable(void);
-void loongson3_cpu_die(unsigned int cpu);
+int loongson_cpu_disable(void);
+void loongson_cpu_die(unsigned int cpu);
#endif
static inline void plat_smp_setup(void)
{
- loongson3_smp_setup();
+ loongson_smp_setup();
}
static inline int raw_smp_processor_id(void)
@@ -85,28 +85,28 @@
*/
static inline void smp_send_reschedule(int cpu)
{
- loongson3_send_ipi_single(cpu, SMP_RESCHEDULE);
+ loongson_send_ipi_single(cpu, SMP_RESCHEDULE);
}
static inline void arch_send_call_function_single_ipi(int cpu)
{
- loongson3_send_ipi_single(cpu, SMP_CALL_FUNCTION);
+ loongson_send_ipi_single(cpu, SMP_CALL_FUNCTION);
}
static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask)
{
- loongson3_send_ipi_mask(mask, SMP_CALL_FUNCTION);
+ loongson_send_ipi_mask(mask, SMP_CALL_FUNCTION);
}
#ifdef CONFIG_HOTPLUG_CPU
static inline int __cpu_disable(void)
{
- return loongson3_cpu_disable();
+ return loongson_cpu_disable();
}
static inline void __cpu_die(unsigned int cpu)
{
- loongson3_cpu_die(cpu);
+ loongson_cpu_die(cpu);
}
extern void play_dead(void);
diff --git a/arch/loongarch/kernel/acpi.c b/arch/loongarch/kernel/acpi.c
index 3353984..8319cc4 100644
--- a/arch/loongarch/kernel/acpi.c
+++ b/arch/loongarch/kernel/acpi.c
@@ -56,23 +56,6 @@
return ioremap_cache(phys, size);
}
-void __init acpi_boot_table_init(void)
-{
- /*
- * If acpi_disabled, bail out
- */
- if (acpi_disabled)
- return;
-
- /*
- * Initialize the ACPI boot-time table parser.
- */
- if (acpi_table_init()) {
- disable_acpi();
- return;
- }
-}
-
#ifdef CONFIG_SMP
static int set_processor_mask(u32 id, u32 flags)
{
@@ -156,13 +139,21 @@
loongson_sysconf.nr_cpus = num_processors;
}
-int __init acpi_boot_init(void)
+void __init acpi_boot_table_init(void)
{
/*
* If acpi_disabled, bail out
*/
if (acpi_disabled)
- return -1;
+ return;
+
+ /*
+ * Initialize the ACPI boot-time table parser.
+ */
+ if (acpi_table_init()) {
+ disable_acpi();
+ return;
+ }
loongson_sysconf.boot_cpu_id = read_csr_cpuid();
@@ -173,8 +164,6 @@
/* Do not enable ACPI SPCR console by default */
acpi_parse_spcr(earlycon_acpi_spcr_enable, false);
-
- return 0;
}
#ifdef CONFIG_ACPI_NUMA
diff --git a/arch/loongarch/kernel/irq.c b/arch/loongarch/kernel/irq.c
index 1ba19c7..0524bf1 100644
--- a/arch/loongarch/kernel/irq.c
+++ b/arch/loongarch/kernel/irq.c
@@ -117,7 +117,7 @@
if (ipi_irq < 0)
panic("IPI IRQ mapping failed\n");
irq_set_percpu_devid(ipi_irq);
- r = request_percpu_irq(ipi_irq, loongson3_ipi_interrupt, "IPI", &ipi_dummy_dev);
+ r = request_percpu_irq(ipi_irq, loongson_ipi_interrupt, "IPI", &ipi_dummy_dev);
if (r < 0)
panic("IPI IRQ request failed\n");
#endif
diff --git a/arch/loongarch/kernel/process.c b/arch/loongarch/kernel/process.c
index 2526b68..ddb8ba4 100644
--- a/arch/loongarch/kernel/process.c
+++ b/arch/loongarch/kernel/process.c
@@ -152,7 +152,7 @@
childregs->csr_crmd = p->thread.csr_crmd;
childregs->csr_prmd = p->thread.csr_prmd;
childregs->csr_ecfg = p->thread.csr_ecfg;
- return 0;
+ goto out;
}
/* user thread */
@@ -171,14 +171,15 @@
*/
childregs->csr_euen = 0;
+ if (clone_flags & CLONE_SETTLS)
+ childregs->regs[2] = tls;
+
+out:
clear_tsk_thread_flag(p, TIF_USEDFPU);
clear_tsk_thread_flag(p, TIF_USEDSIMD);
clear_tsk_thread_flag(p, TIF_LSX_CTX_LIVE);
clear_tsk_thread_flag(p, TIF_LASX_CTX_LIVE);
- if (clone_flags & CLONE_SETTLS)
- childregs->regs[2] = tls;
-
return 0;
}
diff --git a/arch/loongarch/kernel/setup.c b/arch/loongarch/kernel/setup.c
index 1eb63fa..ae436de 100644
--- a/arch/loongarch/kernel/setup.c
+++ b/arch/loongarch/kernel/setup.c
@@ -257,7 +257,6 @@
#ifdef CONFIG_ACPI
acpi_gbl_use_default_register_widths = false;
acpi_boot_table_init();
- acpi_boot_init();
#endif
#ifdef CONFIG_NUMA
diff --git a/arch/loongarch/kernel/smp.c b/arch/loongarch/kernel/smp.c
index 781a4d4..6ed72f7 100644
--- a/arch/loongarch/kernel/smp.c
+++ b/arch/loongarch/kernel/smp.c
@@ -136,12 +136,12 @@
}
}
-void loongson3_send_ipi_single(int cpu, unsigned int action)
+void loongson_send_ipi_single(int cpu, unsigned int action)
{
ipi_write_action(cpu_logical_map(cpu), (u32)action);
}
-void loongson3_send_ipi_mask(const struct cpumask *mask, unsigned int action)
+void loongson_send_ipi_mask(const struct cpumask *mask, unsigned int action)
{
unsigned int i;
@@ -149,7 +149,7 @@
ipi_write_action(cpu_logical_map(i), (u32)action);
}
-irqreturn_t loongson3_ipi_interrupt(int irq, void *dev)
+irqreturn_t loongson_ipi_interrupt(int irq, void *dev)
{
unsigned int action;
unsigned int cpu = smp_processor_id();
@@ -169,7 +169,7 @@
return IRQ_HANDLED;
}
-void __init loongson3_smp_setup(void)
+void __init loongson_smp_setup(void)
{
cpu_data[0].core = cpu_logical_map(0) % loongson_sysconf.cores_per_package;
cpu_data[0].package = cpu_logical_map(0) / loongson_sysconf.cores_per_package;
@@ -178,7 +178,7 @@
pr_info("Detected %i available CPU(s)\n", loongson_sysconf.nr_cpus);
}
-void __init loongson3_prepare_cpus(unsigned int max_cpus)
+void __init loongson_prepare_cpus(unsigned int max_cpus)
{
int i = 0;
@@ -193,7 +193,7 @@
/*
* Setup the PC, SP, and TP of a secondary processor and start it running!
*/
-void loongson3_boot_secondary(int cpu, struct task_struct *idle)
+void loongson_boot_secondary(int cpu, struct task_struct *idle)
{
unsigned long entry;
@@ -205,13 +205,13 @@
csr_mail_send(entry, cpu_logical_map(cpu), 0);
- loongson3_send_ipi_single(cpu, SMP_BOOT_CPU);
+ loongson_send_ipi_single(cpu, SMP_BOOT_CPU);
}
/*
* SMP init and finish on secondary CPUs
*/
-void loongson3_init_secondary(void)
+void loongson_init_secondary(void)
{
unsigned int cpu = smp_processor_id();
unsigned int imask = ECFGF_IP0 | ECFGF_IP1 | ECFGF_IP2 |
@@ -231,7 +231,7 @@
cpu_logical_map(cpu) / loongson_sysconf.cores_per_package;
}
-void loongson3_smp_finish(void)
+void loongson_smp_finish(void)
{
local_irq_enable();
iocsr_write64(0, LOONGARCH_IOCSR_MBUF0);
@@ -240,7 +240,7 @@
#ifdef CONFIG_HOTPLUG_CPU
-int loongson3_cpu_disable(void)
+int loongson_cpu_disable(void)
{
unsigned long flags;
unsigned int cpu = smp_processor_id();
@@ -262,7 +262,7 @@
return 0;
}
-void loongson3_cpu_die(unsigned int cpu)
+void loongson_cpu_die(unsigned int cpu)
{
while (per_cpu(cpu_state, cpu) != CPU_DEAD)
cpu_relax();
@@ -300,19 +300,19 @@
*/
#ifdef CONFIG_PM
-static int loongson3_ipi_suspend(void)
+static int loongson_ipi_suspend(void)
{
return 0;
}
-static void loongson3_ipi_resume(void)
+static void loongson_ipi_resume(void)
{
iocsr_write32(0xffffffff, LOONGARCH_IOCSR_IPI_EN);
}
-static struct syscore_ops loongson3_ipi_syscore_ops = {
- .resume = loongson3_ipi_resume,
- .suspend = loongson3_ipi_suspend,
+static struct syscore_ops loongson_ipi_syscore_ops = {
+ .resume = loongson_ipi_resume,
+ .suspend = loongson_ipi_suspend,
};
/*
@@ -321,7 +321,7 @@
*/
static int __init ipi_pm_init(void)
{
- register_syscore_ops(&loongson3_ipi_syscore_ops);
+ register_syscore_ops(&loongson_ipi_syscore_ops);
return 0;
}
@@ -425,7 +425,7 @@
{
init_new_context(current, &init_mm);
current_thread_info()->cpu = 0;
- loongson3_prepare_cpus(max_cpus);
+ loongson_prepare_cpus(max_cpus);
set_cpu_sibling_map(0);
set_cpu_core_map(0);
calculate_cpu_foreign_map();
@@ -436,7 +436,7 @@
int __cpu_up(unsigned int cpu, struct task_struct *tidle)
{
- loongson3_boot_secondary(cpu, tidle);
+ loongson_boot_secondary(cpu, tidle);
/* Wait for CPU to start and be ready to sync counters */
if (!wait_for_completion_timeout(&cpu_starting,
@@ -465,7 +465,7 @@
cpu_probe();
constant_clockevent_init();
- loongson3_init_secondary();
+ loongson_init_secondary();
set_cpu_sibling_map(cpu);
set_cpu_core_map(cpu);
@@ -487,11 +487,11 @@
complete(&cpu_running);
/*
- * irq will be enabled in loongson3_smp_finish(), enabling it too
+ * irq will be enabled in loongson_smp_finish(), enabling it too
* early is dangerous.
*/
WARN_ON_ONCE(!irqs_disabled());
- loongson3_smp_finish();
+ loongson_smp_finish();
cpu_startup_entry(CPUHP_AP_ONLINE_IDLE);
}
diff --git a/arch/loongarch/kernel/unwind_prologue.c b/arch/loongarch/kernel/unwind_prologue.c
index b206d91..4571c3c 100644
--- a/arch/loongarch/kernel/unwind_prologue.c
+++ b/arch/loongarch/kernel/unwind_prologue.c
@@ -43,7 +43,8 @@
{
struct stack_info *info = &state->stack_info;
union loongarch_instruction *ip, *ip_end;
- unsigned long frame_size = 0, frame_ra = -1;
+ long frame_ra = -1;
+ unsigned long frame_size = 0;
unsigned long size, offset, pc = state->pc;
if (state->sp >= info->end || state->sp < info->begin)
