diff options
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/gpio.h | 55 | ||||
| -rw-r--r-- | include/asm-generic/hyperv-tlfs.h | 9 | ||||
| -rw-r--r-- | include/asm-generic/msi.h | 4 | ||||
| -rw-r--r-- | include/asm-generic/tlb.h | 42 | ||||
| -rw-r--r-- | include/asm-generic/vmlinux.lds.h | 15 |
5 files changed, 79 insertions, 46 deletions
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h index aea9aee1f3e9..a7752cf152ce 100644 --- a/include/asm-generic/gpio.h +++ b/include/asm-generic/gpio.h @@ -11,40 +11,18 @@ #include <linux/gpio/driver.h> #include <linux/gpio/consumer.h> -/* Platforms may implement their GPIO interface with library code, +/* + * Platforms may implement their GPIO interface with library code, * at a small performance cost for non-inlined operations and some * extra memory (for code and for per-GPIO table entries). - * - * While the GPIO programming interface defines valid GPIO numbers - * to be in the range 0..MAX_INT, this library restricts them to the - * smaller range 0..ARCH_NR_GPIOS-1. - * - * ARCH_NR_GPIOS is somewhat arbitrary; it usually reflects the sum of - * builtin/SoC GPIOs plus a number of GPIOs on expanders; the latter is - * actually an estimate of a board-specific value. */ -#ifndef ARCH_NR_GPIOS -#if defined(CONFIG_ARCH_NR_GPIO) && CONFIG_ARCH_NR_GPIO > 0 -#define ARCH_NR_GPIOS CONFIG_ARCH_NR_GPIO -#else -#define ARCH_NR_GPIOS 512 -#endif -#endif - /* - * "valid" GPIO numbers are nonnegative and may be passed to - * setup routines like gpio_request(). only some valid numbers - * can successfully be requested and used. - * - * Invalid GPIO numbers are useful for indicating no-such-GPIO in - * platform data and other tables. + * At the end we want all GPIOs to be dynamically allocated from 0. + * However, some legacy drivers still perform fixed allocation. + * Until they are all fixed, leave 0-512 space for them. */ - -static inline bool gpio_is_valid(int number) -{ - return number >= 0 && number < ARCH_NR_GPIOS; -} +#define GPIO_DYNAMIC_BASE 512 struct device; struct gpio; @@ -140,12 +118,6 @@ static inline void gpio_unexport(unsigned gpio) #include <linux/kernel.h> -static inline bool gpio_is_valid(int number) -{ - /* only non-negative numbers are valid */ - return number >= 0; -} - /* platforms that don't directly support access to GPIOs through I2C, SPI, * or other blocking infrastructure can use these wrappers. */ @@ -169,4 +141,19 @@ static inline void gpio_set_value_cansleep(unsigned gpio, int value) #endif /* !CONFIG_GPIOLIB */ +/* + * "valid" GPIO numbers are nonnegative and may be passed to + * setup routines like gpio_request(). only some valid numbers + * can successfully be requested and used. + * + * Invalid GPIO numbers are useful for indicating no-such-GPIO in + * platform data and other tables. + */ + +static inline bool gpio_is_valid(int number) +{ + /* only non-negative numbers are valid */ + return number >= 0; +} + #endif /* _ASM_GENERIC_GPIO_H */ diff --git a/include/asm-generic/hyperv-tlfs.h b/include/asm-generic/hyperv-tlfs.h index 020ca9bdbb79..e29ccabf2e09 100644 --- a/include/asm-generic/hyperv-tlfs.h +++ b/include/asm-generic/hyperv-tlfs.h @@ -102,6 +102,15 @@ struct ms_hyperv_tsc_page { volatile s64 tsc_offset; } __packed; +union hv_reference_tsc_msr { + u64 as_uint64; + struct { + u64 enable:1; + u64 reserved:11; + u64 pfn:52; + } __packed; +}; + /* * The guest OS needs to register the guest ID with the hypervisor. * The guest ID is a 64 bit entity and the structure of this ID is diff --git a/include/asm-generic/msi.h b/include/asm-generic/msi.h index bf910d47e900..124c734ca5d9 100644 --- a/include/asm-generic/msi.h +++ b/include/asm-generic/msi.h @@ -4,7 +4,7 @@ #include <linux/types.h> -#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN +#ifdef CONFIG_GENERIC_MSI_IRQ #ifndef NUM_MSI_ALLOC_SCRATCHPAD_REGS # define NUM_MSI_ALLOC_SCRATCHPAD_REGS 2 @@ -36,6 +36,6 @@ typedef struct msi_alloc_info { #define GENERIC_MSI_DOMAIN_OPS 1 -#endif /* CONFIG_GENERIC_MSI_IRQ_DOMAIN */ +#endif /* CONFIG_GENERIC_MSI_IRQ */ #endif diff --git a/include/asm-generic/tlb.h b/include/asm-generic/tlb.h index 492dce43236e..b46617207c93 100644 --- a/include/asm-generic/tlb.h +++ b/include/asm-generic/tlb.h @@ -222,12 +222,16 @@ extern void tlb_remove_table(struct mmu_gather *tlb, void *table); #define tlb_needs_table_invalidate() (true) #endif +void tlb_remove_table_sync_one(void); + #else #ifdef tlb_needs_table_invalidate #error tlb_needs_table_invalidate() requires MMU_GATHER_RCU_TABLE_FREE #endif +static inline void tlb_remove_table_sync_one(void) { } + #endif /* CONFIG_MMU_GATHER_RCU_TABLE_FREE */ @@ -242,7 +246,7 @@ struct mmu_gather_batch { struct mmu_gather_batch *next; unsigned int nr; unsigned int max; - struct page *pages[]; + struct encoded_page *encoded_pages[]; }; #define MAX_GATHER_BATCH \ @@ -256,8 +260,31 @@ struct mmu_gather_batch { */ #define MAX_GATHER_BATCH_COUNT (10000UL/MAX_GATHER_BATCH) -extern bool __tlb_remove_page_size(struct mmu_gather *tlb, struct page *page, +extern bool __tlb_remove_page_size(struct mmu_gather *tlb, + struct encoded_page *page, int page_size); + +#ifdef CONFIG_SMP +/* + * This both sets 'delayed_rmap', and returns true. It would be an inline + * function, except we define it before the 'struct mmu_gather'. + */ +#define tlb_delay_rmap(tlb) (((tlb)->delayed_rmap = 1), true) +extern void tlb_flush_rmaps(struct mmu_gather *tlb, struct vm_area_struct *vma); +#endif + +#endif + +/* + * We have a no-op version of the rmap removal that doesn't + * delay anything. That is used on S390, which flushes remote + * TLBs synchronously, and on UP, which doesn't have any + * remote TLBs to flush and is not preemptible due to this + * all happening under the page table lock. + */ +#ifndef tlb_delay_rmap +#define tlb_delay_rmap(tlb) (false) +static inline void tlb_flush_rmaps(struct mmu_gather *tlb, struct vm_area_struct *vma) { } #endif /* @@ -291,6 +318,11 @@ struct mmu_gather { unsigned int freed_tables : 1; /* + * Do we have pending delayed rmap removals? + */ + unsigned int delayed_rmap : 1; + + /* * at which levels have we cleared entries? */ unsigned int cleared_ptes : 1; @@ -431,13 +463,13 @@ static inline void tlb_flush_mmu_tlbonly(struct mmu_gather *tlb) static inline void tlb_remove_page_size(struct mmu_gather *tlb, struct page *page, int page_size) { - if (__tlb_remove_page_size(tlb, page, page_size)) + if (__tlb_remove_page_size(tlb, encode_page(page, 0), page_size)) tlb_flush_mmu(tlb); } -static inline bool __tlb_remove_page(struct mmu_gather *tlb, struct page *page) +static __always_inline bool __tlb_remove_page(struct mmu_gather *tlb, struct page *page, unsigned int flags) { - return __tlb_remove_page_size(tlb, page, PAGE_SIZE); + return __tlb_remove_page_size(tlb, encode_page(page, flags), PAGE_SIZE); } /* tlb_remove_page diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index d06ada2341cb..475507093645 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -81,8 +81,8 @@ #define RO_EXCEPTION_TABLE #endif -/* Align . to a 8 byte boundary equals to maximum function alignment. */ -#define ALIGN_FUNCTION() . = ALIGN(8) +/* Align . function alignment. */ +#define ALIGN_FUNCTION() . = ALIGN(CONFIG_FUNCTION_ALIGNMENT) /* * LD_DEAD_CODE_DATA_ELIMINATION option enables -fdata-sections, which @@ -347,6 +347,7 @@ #define DATA_DATA \ *(.xiptext) \ *(DATA_MAIN) \ + *(.data..decrypted) \ *(.ref.data) \ *(.data..shared_aligned) /* percpu related */ \ MEM_KEEP(init.data*) \ @@ -995,7 +996,6 @@ #ifdef CONFIG_AMD_MEM_ENCRYPT #define PERCPU_DECRYPTED_SECTION \ . = ALIGN(PAGE_SIZE); \ - *(.data..decrypted) \ *(.data..percpu..decrypted) \ . = ALIGN(PAGE_SIZE); #else @@ -1027,14 +1027,19 @@ * keep any .init_array.* sections. * https://bugs.llvm.org/show_bug.cgi?id=46478 */ +#ifdef CONFIG_UNWIND_TABLES +#define DISCARD_EH_FRAME +#else +#define DISCARD_EH_FRAME *(.eh_frame) +#endif #if defined(CONFIG_GCOV_KERNEL) || defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KCSAN) # ifdef CONFIG_CONSTRUCTORS # define SANITIZER_DISCARDS \ - *(.eh_frame) + DISCARD_EH_FRAME # else # define SANITIZER_DISCARDS \ *(.init_array) *(.init_array.*) \ - *(.eh_frame) + DISCARD_EH_FRAME # endif #else # define SANITIZER_DISCARDS |