diff options
63 files changed, 203 insertions, 229 deletions
diff --git a/Documentation/driver-api/device-io.rst b/Documentation/driver-api/device-io.rst index 2c7abd234f4e..d55384b106bd 100644 --- a/Documentation/driver-api/device-io.rst +++ b/Documentation/driver-api/device-io.rst @@ -408,11 +408,12 @@ functions for details on the CPU side of things. ioremap_uc() ------------ -ioremap_uc() behaves like ioremap() except that on the x86 architecture without -'PAT' mode, it marks memory as uncached even when the MTRR has designated -it as cacheable, see Documentation/arch/x86/pat.rst. +ioremap_uc() is only meaningful on old x86-32 systems with the PAT extension, +and on ia64 with its slightly unconventional ioremap() behavior, everywhere +elss ioremap_uc() defaults to return NULL. -Portable drivers should avoid the use of ioremap_uc(). + +Portable drivers should avoid the use of ioremap_uc(), use ioremap() instead. ioremap_cache() --------------- diff --git a/arch/alpha/include/asm/io.h b/arch/alpha/include/asm/io.h index 7aeaf7c30a6f..4f47a5003fe8 100644 --- a/arch/alpha/include/asm/io.h +++ b/arch/alpha/include/asm/io.h @@ -308,7 +308,6 @@ static inline void __iomem *ioremap(unsigned long port, unsigned long size) } #define ioremap_wc ioremap -#define ioremap_uc ioremap static inline void iounmap(volatile void __iomem *addr) { @@ -652,12 +651,6 @@ extern void outsl (unsigned long port, const void *src, unsigned long count); #define RTC_ALWAYS_BCD 0 /* - * Convert a physical pointer to a virtual kernel pointer for /dev/mem - * access - */ -#define xlate_dev_mem_ptr(p) __va(p) - -/* * These get provided from <asm-generic/iomap.h> since alpha does not * select GENERIC_IOMAP. */ diff --git a/arch/alpha/include/asm/mmu_context.h b/arch/alpha/include/asm/mmu_context.h index 4eea7c616992..29a3e3a1f02b 100644 --- a/arch/alpha/include/asm/mmu_context.h +++ b/arch/alpha/include/asm/mmu_context.h @@ -183,6 +183,8 @@ ev4_switch_mm(struct mm_struct *prev_mm, struct mm_struct *next_mm, } extern void __load_new_mm_context(struct mm_struct *); +asmlinkage void do_page_fault(unsigned long address, unsigned long mmcsr, + long cause, struct pt_regs *regs); #ifdef CONFIG_SMP #define check_mmu_context() \ diff --git a/arch/alpha/kernel/asm-offsets.c b/arch/alpha/kernel/asm-offsets.c index b121294bee26..bf1eedd27cf7 100644 --- a/arch/alpha/kernel/asm-offsets.c +++ b/arch/alpha/kernel/asm-offsets.c @@ -12,7 +12,7 @@ #include <linux/kbuild.h> #include <asm/io.h> -void foo(void) +static void __used foo(void) { DEFINE(TI_TASK, offsetof(struct thread_info, task)); DEFINE(TI_FLAGS, offsetof(struct thread_info, flags)); diff --git a/arch/alpha/kernel/traps.c b/arch/alpha/kernel/traps.c index d9a67b370e04..7fc72aeb7398 100644 --- a/arch/alpha/kernel/traps.c +++ b/arch/alpha/kernel/traps.c @@ -9,6 +9,7 @@ * This file initializes the trap entry points */ +#include <linux/cpu.h> #include <linux/jiffies.h> #include <linux/mm.h> #include <linux/sched/signal.h> diff --git a/arch/arc/include/asm/page.h b/arch/arc/include/asm/page.h index 02b53ad811fb..def0dfb95b43 100644 --- a/arch/arc/include/asm/page.h +++ b/arch/arc/include/asm/page.h @@ -85,15 +85,6 @@ typedef struct { typedef struct page *pgtable_t; /* - * Use virt_to_pfn with caution: - * If used in pte or paddr related macros, it could cause truncation - * in PAE40 builds - * As a rule of thumb, only use it in helpers starting with virt_ - * You have been warned ! - */ -#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) - -/* * When HIGHMEM is enabled we have holes in the memory map so we need * pfn_valid() that takes into account the actual extents of the physical * memory @@ -122,6 +113,18 @@ extern int pfn_valid(unsigned long pfn); #define __pa(vaddr) ((unsigned long)(vaddr)) #define __va(paddr) ((void *)((unsigned long)(paddr))) +/* + * Use virt_to_pfn with caution: + * If used in pte or paddr related macros, it could cause truncation + * in PAE40 builds + * As a rule of thumb, only use it in helpers starting with virt_ + * You have been warned ! + */ +static inline unsigned long virt_to_pfn(const void *kaddr) +{ + return __pa(kaddr) >> PAGE_SHIFT; +} + #define virt_to_page(kaddr) pfn_to_page(virt_to_pfn(kaddr)) #define virt_addr_valid(kaddr) pfn_valid(virt_to_pfn(kaddr)) diff --git a/arch/arc/include/asm/pgtable-levels.h b/arch/arc/include/asm/pgtable-levels.h index fc417c75c24d..86e148226463 100644 --- a/arch/arc/include/asm/pgtable-levels.h +++ b/arch/arc/include/asm/pgtable-levels.h @@ -159,7 +159,7 @@ #define pmd_clear(xp) do { pmd_val(*(xp)) = 0; } while (0) #define pmd_page_vaddr(pmd) (pmd_val(pmd) & PAGE_MASK) #define pmd_pfn(pmd) ((pmd_val(pmd) & PAGE_MASK) >> PAGE_SHIFT) -#define pmd_page(pmd) virt_to_page(pmd_page_vaddr(pmd)) +#define pmd_page(pmd) virt_to_page((void *)pmd_page_vaddr(pmd)) #define set_pmd(pmdp, pmd) (*(pmdp) = pmd) #define pmd_pgtable(pmd) ((pgtable_t) pmd_page(pmd)) diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h index 56b08ed6cc3b..1815748f5d2a 100644 --- a/arch/arm/include/asm/io.h +++ b/arch/arm/include/asm/io.h @@ -407,12 +407,6 @@ struct pci_dev; #define pci_iounmap pci_iounmap extern void pci_iounmap(struct pci_dev *dev, void __iomem *addr); -/* - * Convert a physical pointer to a virtual kernel pointer for /dev/mem - * access - */ -#define xlate_dev_mem_ptr(p) __va(p) - #include <asm-generic/io.h> #ifdef CONFIG_MMU diff --git a/arch/arm/include/asm/irq_work.h b/arch/arm/include/asm/irq_work.h index 3149e4dc1b54..8895999834cc 100644 --- a/arch/arm/include/asm/irq_work.h +++ b/arch/arm/include/asm/irq_work.h @@ -9,6 +9,4 @@ static inline bool arch_irq_work_has_interrupt(void) return is_smp(); } -extern void arch_irq_work_raise(void); - #endif /* _ASM_ARM_IRQ_WORK_H */ diff --git a/arch/arm/include/asm/vdso.h b/arch/arm/include/asm/vdso.h index 422c3afa806a..5b85889f82ee 100644 --- a/arch/arm/include/asm/vdso.h +++ b/arch/arm/include/asm/vdso.h @@ -24,11 +24,6 @@ static inline void arm_install_vdso(struct mm_struct *mm, unsigned long addr) #endif /* CONFIG_VDSO */ -int __vdso_clock_gettime(clockid_t clock, struct old_timespec32 *ts); -int __vdso_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts); -int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz); -int __vdso_clock_getres(clockid_t clock_id, struct old_timespec32 *res); - #endif /* __ASSEMBLY__ */ #endif /* __KERNEL__ */ diff --git a/arch/arm/vdso/vgettimeofday.c b/arch/arm/vdso/vgettimeofday.c index a003beacac76..3554aa35f1ba 100644 --- a/arch/arm/vdso/vgettimeofday.c +++ b/arch/arm/vdso/vgettimeofday.c @@ -8,6 +8,7 @@ #include <linux/types.h> #include <asm/vdso.h> #include <asm/unwind.h> +#include <vdso/gettime.h> int __vdso_clock_gettime(clockid_t clock, struct old_timespec32 *ts) diff --git a/arch/arm64/include/asm/irq_work.h b/arch/arm64/include/asm/irq_work.h index 81bbfa3a035b..a1020285ea75 100644 --- a/arch/arm64/include/asm/irq_work.h +++ b/arch/arm64/include/asm/irq_work.h @@ -2,8 +2,6 @@ #ifndef __ASM_IRQ_WORK_H #define __ASM_IRQ_WORK_H -extern void arch_irq_work_raise(void); - static inline bool arch_irq_work_has_interrupt(void) { return true; diff --git a/arch/arm64/kernel/vdso32/vgettimeofday.c b/arch/arm64/kernel/vdso32/vgettimeofday.c index 5acff29c5991..29b4d8f61e39 100644 --- a/arch/arm64/kernel/vdso32/vgettimeofday.c +++ b/arch/arm64/kernel/vdso32/vgettimeofday.c @@ -5,6 +5,8 @@ * Copyright (C) 2018 ARM Limited * */ +#define BUILD_VDSO32_64 +#include <vdso/gettime.h> int __vdso_clock_gettime(clockid_t clock, struct old_timespec32 *ts) diff --git a/arch/csky/include/asm/ftrace.h b/arch/csky/include/asm/ftrace.h index 9b86341731b6..fd215c38ef27 100644 --- a/arch/csky/include/asm/ftrace.h +++ b/arch/csky/include/asm/ftrace.h @@ -26,5 +26,9 @@ static inline unsigned long ftrace_call_adjust(unsigned long addr) struct dyn_arch_ftrace { }; + +void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr, + unsigned long frame_pointer); + #endif /* !__ASSEMBLY__ */ #endif /* __ASM_CSKY_FTRACE_H */ diff --git a/arch/csky/include/asm/irq_work.h b/arch/csky/include/asm/irq_work.h index 33aaf39d6f94..d39fcc1f5395 100644 --- a/arch/csky/include/asm/irq_work.h +++ b/arch/csky/include/asm/irq_work.h @@ -7,5 +7,5 @@ static inline bool arch_irq_work_has_interrupt(void) { return true; } -extern void arch_irq_work_raise(void); + #endif /* __ASM_CSKY_IRQ_WORK_H */ diff --git a/arch/csky/include/asm/jump_label.h b/arch/csky/include/asm/jump_label.h index d488ba6084bc..98a3f4b168bd 100644 --- a/arch/csky/include/asm/jump_label.h +++ b/arch/csky/include/asm/jump_label.h @@ -43,5 +43,10 @@ label: return true; } +enum jump_label_type; +void arch_jump_label_transform_static(struct jump_entry *entry, + enum jump_label_type type); +#define arch_jump_label_transform_static arch_jump_label_transform_static + #endif /* __ASSEMBLY__ */ #endif /* __ASM_CSKY_JUMP_LABEL_H */ diff --git a/arch/csky/include/asm/traps.h b/arch/csky/include/asm/traps.h index 732c4aaa2e26..6bbbbe43165f 100644 --- a/arch/csky/include/asm/traps.h +++ b/arch/csky/include/asm/traps.h @@ -55,6 +55,6 @@ asmlinkage void trap_c(struct pt_regs *regs); asmlinkage void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags); -void trap_init(void); +asmlinkage void do_page_fault(struct pt_regs *regs); #endif /* __ASM_CSKY_TRAPS_H */ diff --git a/arch/csky/kernel/traps.c b/arch/csky/kernel/traps.c index 6e426fba0119..c2246b07cc9c 100644 --- a/arch/csky/kernel/traps.c +++ b/arch/csky/kernel/traps.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. +#include <linux/cpu.h> #include <linux/sched.h> #include <linux/signal.h> #include <linux/kernel.h> diff --git a/arch/csky/kernel/vdso/vgettimeofday.c b/arch/csky/kernel/vdso/vgettimeofday.c index c4831145eed5..55af30e83752 100644 --- a/arch/csky/kernel/vdso/vgettimeofday.c +++ b/arch/csky/kernel/vdso/vgettimeofday.c @@ -2,36 +2,27 @@ #include <linux/time.h> #include <linux/types.h> +#include <vdso/gettime.h> extern int __vdso_clock_gettime(clockid_t clock, - struct old_timespec32 *ts); -int __vdso_clock_gettime(clockid_t clock, struct old_timespec32 *ts) { return __cvdso_clock_gettime32(clock, ts); } int __vdso_clock_gettime64(clockid_t clock, - struct __kernel_timespec *ts); -int __vdso_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts) { return __cvdso_clock_gettime(clock, ts); } -extern -int __vdso_gettimeofday(struct __kernel_old_timeval *tv, - struct timezone *tz); int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz) { return __cvdso_gettimeofday(tv, tz); } -extern -int __vdso_clock_getres(clockid_t clock_id, - struct old_timespec32 *res); int __vdso_clock_getres(clockid_t clock_id, struct old_timespec32 *res) { diff --git a/arch/hexagon/include/asm/io.h b/arch/hexagon/include/asm/io.h index e2b308e32a37..522d321ea85a 100644 --- a/arch/hexagon/include/asm/io.h +++ b/arch/hexagon/include/asm/io.h @@ -59,12 +59,6 @@ static inline void *phys_to_virt(unsigned long address) } /* - * convert a physical pointer to a virtual kernel pointer for - * /dev/mem access. - */ -#define xlate_dev_mem_ptr(p) __va(p) - -/* * IO port access primitives. Hexagon doesn't have special IO access * instructions; all I/O is memory mapped. * @@ -174,9 +168,6 @@ static inline void writel(u32 data, volatile void __iomem *addr) #define _PAGE_IOREMAP (_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \ (__HEXAGON_C_DEV << 6)) -#define ioremap_uc(addr, size) ioremap((addr), (size)) - - #define __raw_writel writel static inline void memcpy_fromio(void *dst, const volatile void __iomem *src, diff --git a/arch/hexagon/include/asm/page.h b/arch/hexagon/include/asm/page.h index 9c03b9965f07..10f1bc07423c 100644 --- a/arch/hexagon/include/asm/page.h +++ b/arch/hexagon/include/asm/page.h @@ -78,6 +78,9 @@ typedef struct page *pgtable_t; #define __pgd(x) ((pgd_t) { (x) }) #define __pgprot(x) ((pgprot_t) { (x) }) +/* Needed for PAGE_OFFSET used in the macro right below */ +#include <asm/mem-layout.h> + /* * We need a __pa and a __va routine for kernel space. * MIPS says they're only used during mem_init. @@ -125,8 +128,16 @@ static inline void clear_page(void *page) */ #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) -#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) -#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) +static inline unsigned long virt_to_pfn(const void *kaddr) +{ + return __pa(kaddr) >> PAGE_SHIFT; +} + +static inline void *pfn_to_virt(unsigned long pfn) +{ + return (void *)((unsigned long)__va(pfn) << PAGE_SHIFT); +} + #define page_to_virt(page) __va(page_to_phys(page)) diff --git a/arch/hexagon/include/uapi/asm/user.h b/arch/hexagon/include/uapi/asm/user.h index 7327ec59b22f..abae6a4b5813 100644 --- a/arch/hexagon/include/uapi/asm/user.h +++ b/arch/hexagon/include/uapi/asm/user.h @@ -56,15 +56,10 @@ struct user_regs_struct { unsigned long pc; unsigned long cause; unsigned long badva; -#if CONFIG_HEXAGON_ARCH_VERSION < 4 - unsigned long pad1; /* pad out to 48 words total */ - unsigned long pad2; /* pad out to 48 words total */ - unsigned long pad3; /* pad out to 48 words total */ -#else + /* cs0 and cs1 are only available with HEXAGON_ARCH_VERSION >= 4 */ unsigned long cs0; unsigned long cs1; unsigned long pad1; /* pad out to 48 words total */ -#endif }; #endif diff --git a/arch/hexagon/kernel/ptrace.c b/arch/hexagon/kernel/ptrace.c index 125f19995b76..905b06790ab7 100644 --- a/arch/hexagon/kernel/ptrace.c +++ b/arch/hexagon/kernel/ptrace.c @@ -74,7 +74,7 @@ static int genregs_set(struct task_struct *target, unsigned int pos, unsigned int count, const void *kbuf, const void __user *ubuf) { - int ret; + int ret, ignore_offset; unsigned long bucket; struct pt_regs *regs = task_pt_regs(target); @@ -111,12 +111,15 @@ static int genregs_set(struct task_struct *target, #if CONFIG_HEXAGON_ARCH_VERSION >=4 INEXT(®s->cs0, cs0); INEXT(®s->cs1, cs1); + ignore_offset = offsetof(struct user_regs_struct, pad1); +#else + ignore_offset = offsetof(struct user_regs_struct, cs0); #endif /* Ignore the rest, if needed */ if (!ret) user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, - offsetof(struct user_regs_struct, pad1), -1); + ignore_offset, -1); else return ret; diff --git a/arch/loongarch/kernel/asm-offsets.c b/arch/loongarch/kernel/asm-offsets.c index 173fe514fc9e..bee9f7a3108f 100644 --- a/arch/loongarch/kernel/asm-offsets.c +++ b/arch/loongarch/kernel/asm-offsets.c @@ -15,7 +15,7 @@ #include <asm/processor.h> #include <asm/ftrace.h> -void output_ptreg_defines(void) +static void __used output_ptreg_defines(void) { COMMENT("LoongArch pt_regs offsets."); OFFSET(PT_R0, pt_regs, regs[0]); @@ -62,7 +62,7 @@ void output_ptreg_defines(void) BLANK(); } -void output_task_defines(void) +static void __used output_task_defines(void) { COMMENT("LoongArch task_struct offsets."); OFFSET(TASK_STATE, task_struct, __state); @@ -77,7 +77,7 @@ void output_task_defines(void) BLANK(); } -void output_thread_info_defines(void) +static void __used output_thread_info_defines(void) { COMMENT("LoongArch thread_info offsets."); OFFSET(TI_TASK, thread_info, task); @@ -93,7 +93,7 @@ void output_thread_info_defines(void) BLANK(); } -void output_thread_defines(void) +static void __used output_thread_defines(void) { COMMENT("LoongArch specific thread_struct offsets."); OFFSET(THREAD_REG01, task_struct, thread.reg01); @@ -129,7 +129,7 @@ void output_thread_defines(void) BLANK(); } -void output_thread_fpu_defines(void) +static void __used output_thread_fpu_defines(void) { OFFSET(THREAD_FPR0, loongarch_fpu, fpr[0]); OFFSET(THREAD_FPR1, loongarch_fpu, fpr[1]); @@ -170,7 +170,7 @@ void output_thread_fpu_defines(void) BLANK(); } -void output_thread_lbt_defines(void) +static void __used output_thread_lbt_defines(void) { OFFSET(THREAD_SCR0, loongarch_lbt, scr0); OFFSET(THREAD_SCR1, loongarch_lbt, scr1); @@ -180,7 +180,7 @@ void output_thread_lbt_defines(void) BLANK(); } -void output_mm_defines(void) +static void __used output_mm_defines(void) { COMMENT("Size of struct page"); DEFINE(STRUCT_PAGE_SIZE, sizeof(struct page)); @@ -212,7 +212,7 @@ void output_mm_defines(void) BLANK(); } -void output_sc_defines(void) +static void __used output_sc_defines(void) { COMMENT("Linux sigcontext offsets."); OFFSET(SC_REGS, sigcontext, sc_regs); @@ -220,7 +220,7 @@ void output_sc_defines(void) BLANK(); } -void output_signal_defines(void) +static void __used output_signal_defines(void) { COMMENT("Linux signal numbers."); DEFINE(_SIGHUP, SIGHUP); @@ -258,7 +258,7 @@ void output_signal_defines(void) } #ifdef CONFIG_SMP -void output_smpboot_defines(void) +static void __used output_smpboot_defines(void) { COMMENT("Linux smp cpu boot offsets."); OFFSET(CPU_BOOT_STACK, secondary_data, stack); @@ -268 |