diff options
Diffstat (limited to 'arch/loongarch')
| -rw-r--r-- | arch/loongarch/include/asm/kasan.h | 13 | ||||
| -rw-r--r-- | arch/loongarch/include/asm/page.h | 5 | ||||
| -rw-r--r-- | arch/loongarch/kernel/acpi.c | 81 | ||||
| -rw-r--r-- | arch/loongarch/kernel/paravirt.c | 15 | ||||
| -rw-r--r-- | arch/loongarch/kernel/smp.c | 5 | ||||
| -rw-r--r-- | arch/loongarch/mm/kasan_init.c | 46 |
6 files changed, 124 insertions, 41 deletions
diff --git a/arch/loongarch/include/asm/kasan.h b/arch/loongarch/include/asm/kasan.h index c6bce5fbff57..7f52bd31b9d4 100644 --- a/arch/loongarch/include/asm/kasan.h +++ b/arch/loongarch/include/asm/kasan.h @@ -25,6 +25,7 @@ /* 64-bit segment value. */ #define XKPRANGE_UC_SEG (0x8000) #define XKPRANGE_CC_SEG (0x9000) +#define XKPRANGE_WC_SEG (0xa000) #define XKVRANGE_VC_SEG (0xffff) /* Cached */ @@ -41,20 +42,28 @@ #define XKPRANGE_UC_SHADOW_SIZE (XKPRANGE_UC_SIZE >> KASAN_SHADOW_SCALE_SHIFT) #define XKPRANGE_UC_SHADOW_END (XKPRANGE_UC_KASAN_OFFSET + XKPRANGE_UC_SHADOW_SIZE) +/* WriteCombine */ +#define XKPRANGE_WC_START WRITECOMBINE_BASE +#define XKPRANGE_WC_SIZE XRANGE_SIZE +#define XKPRANGE_WC_KASAN_OFFSET XKPRANGE_UC_SHADOW_END +#define XKPRANGE_WC_SHADOW_SIZE (XKPRANGE_WC_SIZE >> KASAN_SHADOW_SCALE_SHIFT) +#define XKPRANGE_WC_SHADOW_END (XKPRANGE_WC_KASAN_OFFSET + XKPRANGE_WC_SHADOW_SIZE) + /* VMALLOC (Cached or UnCached) */ #define XKVRANGE_VC_START MODULES_VADDR #define XKVRANGE_VC_SIZE round_up(KFENCE_AREA_END - MODULES_VADDR + 1, PGDIR_SIZE) -#define XKVRANGE_VC_KASAN_OFFSET XKPRANGE_UC_SHADOW_END +#define XKVRANGE_VC_KASAN_OFFSET XKPRANGE_WC_SHADOW_END #define XKVRANGE_VC_SHADOW_SIZE (XKVRANGE_VC_SIZE >> KASAN_SHADOW_SCALE_SHIFT) #define XKVRANGE_VC_SHADOW_END (XKVRANGE_VC_KASAN_OFFSET + XKVRANGE_VC_SHADOW_SIZE) /* KAsan shadow memory start right after vmalloc. */ #define KASAN_SHADOW_START round_up(KFENCE_AREA_END, PGDIR_SIZE) #define KASAN_SHADOW_SIZE (XKVRANGE_VC_SHADOW_END - XKPRANGE_CC_KASAN_OFFSET) -#define KASAN_SHADOW_END round_up(KASAN_SHADOW_START + KASAN_SHADOW_SIZE, PGDIR_SIZE) +#define KASAN_SHADOW_END (round_up(KASAN_SHADOW_START + KASAN_SHADOW_SIZE, PGDIR_SIZE) - 1) #define XKPRANGE_CC_SHADOW_OFFSET (KASAN_SHADOW_START + XKPRANGE_CC_KASAN_OFFSET) #define XKPRANGE_UC_SHADOW_OFFSET (KASAN_SHADOW_START + XKPRANGE_UC_KASAN_OFFSET) +#define XKPRANGE_WC_SHADOW_OFFSET (KASAN_SHADOW_START + XKPRANGE_WC_KASAN_OFFSET) #define XKVRANGE_VC_SHADOW_OFFSET (KASAN_SHADOW_START + XKVRANGE_VC_KASAN_OFFSET) extern bool kasan_early_stage; diff --git a/arch/loongarch/include/asm/page.h b/arch/loongarch/include/asm/page.h index e85df33f11c7..8f21567a3188 100644 --- a/arch/loongarch/include/asm/page.h +++ b/arch/loongarch/include/asm/page.h @@ -113,10 +113,7 @@ struct page *tlb_virt_to_page(unsigned long kaddr); extern int __virt_addr_valid(volatile void *kaddr); #define virt_addr_valid(kaddr) __virt_addr_valid((volatile void *)(kaddr)) -#define VM_DATA_DEFAULT_FLAGS \ - (VM_READ | VM_WRITE | \ - ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \ - VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) +#define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_TSK_EXEC #include <asm-generic/memory_model.h> #include <asm-generic/getorder.h> diff --git a/arch/loongarch/kernel/acpi.c b/arch/loongarch/kernel/acpi.c index f1a74b80f22c..382a09a7152c 100644 --- a/arch/loongarch/kernel/acpi.c +++ b/arch/loongarch/kernel/acpi.c @@ -58,48 +58,48 @@ void __iomem *acpi_os_ioremap(acpi_physical_address phys, acpi_size size) return ioremap_cache(phys, size); } -static int cpu_enumerated = 0; - #ifdef CONFIG_SMP -static int set_processor_mask(u32 id, u32 flags) +static int set_processor_mask(u32 id, u32 pass) { - int nr_cpus; - int cpu, cpuid = id; - - if (!cpu_enumerated) - nr_cpus = NR_CPUS; - else - nr_cpus = nr_cpu_ids; + int cpu = -1, cpuid = id; - if (num_processors >= nr_cpus) { + if (num_processors >= NR_CPUS) { pr_warn(PREFIX "nr_cpus limit of %i reached." - " processor 0x%x ignored.\n", nr_cpus, cpuid); + " processor 0x%x ignored.\n", NR_CPUS, cpuid); return -ENODEV; } + if (cpuid == loongson_sysconf.boot_cpu_id) cpu = 0; - else - cpu = find_first_zero_bit(cpumask_bits(cpu_present_mask), NR_CPUS); - - if (!cpu_enumerated) - set_cpu_possible(cpu, true); - if (flags & ACPI_MADT_ENABLED) { + switch (pass) { + case 1: /* Pass 1 handle enabled processors */ + if (cpu < 0) + cpu = find_first_zero_bit(cpumask_bits(cpu_present_mask), NR_CPUS); num_processors++; set_cpu_present(cpu, true); - __cpu_number_map[cpuid] = cpu; - __cpu_logical_map[cpu] = cpuid; - } else + break; + case 2: /* Pass 2 handle disabled processors */ + if (cpu < 0) + cpu = find_first_zero_bit(cpumask_bits(cpu_possible_mask), NR_CPUS); disabled_cpus++; + break; + default: + return cpu; + } + + set_cpu_possible(cpu, true); + __cpu_number_map[cpuid] = cpu; + __cpu_logical_map[cpu] = cpuid; return cpu; } #endif static int __init -acpi_parse_processor(union acpi_subtable_headers *header, const unsigned long end) +acpi_parse_p1_processor(union acpi_subtable_headers *header, const unsigned long end) { struct acpi_madt_core_pic *processor = NULL; @@ -110,13 +110,30 @@ acpi_parse_processor(union acpi_subtable_headers *header, const unsigned long en acpi_table_print_madt_entry(&header->common); #ifdef CONFIG_SMP acpi_core_pic[processor->core_id] = *processor; - set_processor_mask(processor->core_id, processor->flags); + if (processor->flags & ACPI_MADT_ENABLED) + set_processor_mask(processor->core_id, 1); #endif return 0; } static int __init +acpi_parse_p2_processor(union acpi_subtable_headers *header, const unsigned long end) +{ + struct acpi_madt_core_pic *processor = NULL; + + processor = (struct acpi_madt_core_pic *)header; + if (BAD_MADT_ENTRY(processor, end)) + return -EINVAL; + +#ifdef CONFIG_SMP + if (!(processor->flags & ACPI_MADT_ENABLED)) + set_processor_mask(processor->core_id, 2); +#endif + + return 0; +} +static int __init acpi_parse_eio_master(union acpi_subtable_headers *header, const unsigned long end) { static int core = 0; @@ -143,12 +160,14 @@ static void __init acpi_process_madt(void) } #endif acpi_table_parse_madt(ACPI_MADT_TYPE_CORE_PIC, - acpi_parse_processor, MAX_CORE_PIC); + acpi_parse_p1_processor, MAX_CORE_PIC); + + acpi_table_parse_madt(ACPI_MADT_TYPE_CORE_PIC, + acpi_parse_p2_processor, MAX_CORE_PIC); acpi_table_parse_madt(ACPI_MADT_TYPE_EIO_PIC, acpi_parse_eio_master, MAX_IO_PICS); - cpu_enumerated = 1; loongson_sysconf.nr_cpus = num_processors; } @@ -310,6 +329,10 @@ static int __ref acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) int nid; nid = acpi_get_node(handle); + + if (nid != NUMA_NO_NODE) + nid = early_cpu_to_node(cpu); + if (nid != NUMA_NO_NODE) { set_cpuid_to_node(physid, nid); node_set(nid, numa_nodes_parsed); @@ -324,12 +347,14 @@ int acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, u32 acpi_id, int *pcpu { int cpu; - cpu = set_processor_mask(physid, ACPI_MADT_ENABLED); - if (cpu < 0) { + cpu = cpu_number_map(physid); + if (cpu < 0 || cpu >= nr_cpu_ids) { pr_info(PREFIX "Unable to map lapic to logical cpu number\n"); - return cpu; + return -ERANGE; } + num_processors++; + set_cpu_present(cpu, true); acpi_map_cpu2node(handle, cpu, physid); *pcpu = cpu; diff --git a/arch/loongarch/kernel/paravirt.c b/arch/loongarch/kernel/paravirt.c index a5fc61f8b348..e5a39bbad078 100644 --- a/arch/loongarch/kernel/paravirt.c +++ b/arch/loongarch/kernel/paravirt.c @@ -51,11 +51,18 @@ static u64 paravt_steal_clock(int cpu) } #ifdef CONFIG_SMP +static struct smp_ops native_ops; + static void pv_send_ipi_single(int cpu, unsigned int action) { int min, old; irq_cpustat_t *info = &per_cpu(irq_stat, cpu); + if (unlikely(action == ACTION_BOOT_CPU)) { + native_ops.send_ipi_single(cpu, action); + return; + } + old = atomic_fetch_or(BIT(action), &info->message); if (old) return; @@ -75,6 +82,11 @@ static void pv_send_ipi_mask(const struct cpumask *mask, unsigned int action) if (cpumask_empty(mask)) return; + if (unlikely(action == ACTION_BOOT_CPU)) { + native_ops.send_ipi_mask(mask, action); + return; + } + action = BIT(action); for_each_cpu(i, mask) { info = &per_cpu(irq_stat, i); @@ -147,6 +159,8 @@ static void pv_init_ipi(void) { int r, swi; + /* Init native ipi irq for ACTION_BOOT_CPU */ + native_ops.init_ipi(); swi = get_percpu_irq(INT_SWI0); if (swi < 0) panic("SWI0 IRQ mapping failed\n"); @@ -193,6 +207,7 @@ int __init pv_ipi_init(void) return 0; #ifdef CONFIG_SMP + native_ops = mp_ops; mp_ops.init_ipi = pv_init_ipi; mp_ops.send_ipi_single = pv_send_ipi_single; mp_ops.send_ipi_mask = pv_send_ipi_mask; diff --git a/arch/loongarch/kernel/smp.c b/arch/loongarch/kernel/smp.c index 9afc2d8b3414..5d59e9ce2772 100644 --- a/arch/loongarch/kernel/smp.c +++ b/arch/loongarch/kernel/smp.c @@ -302,7 +302,7 @@ static void __init fdt_smp_setup(void) __cpu_number_map[cpuid] = cpu; __cpu_logical_map[cpu] = cpuid; - early_numa_add_cpu(cpu, 0); + early_numa_add_cpu(cpuid, 0); set_cpuid_to_node(cpuid, 0); } @@ -331,11 +331,11 @@ void __init loongson_prepare_cpus(unsigned int max_cpus) int i = 0; parse_acpi_topology(); + cpu_data[0].global_id = cpu_logical_map(0); for (i = 0; i < loongson_sysconf.nr_cpus; i++) { set_cpu_present(i, true); csr_mail_send(0, __cpu_logical_map[i], 0); - cpu_data[i].global_id = __cpu_logical_map[i]; } per_cpu(cpu_state, smp_processor_id()) = CPU_ONLINE; @@ -380,6 +380,7 @@ void loongson_init_secondary(void) cpu_logical_map(cpu) / loongson_sysconf.cores_per_package; cpu_data[cpu].core = pptt_enabled ? cpu_data[cpu].core : cpu_logical_map(cpu) % loongson_sysconf.cores_per_package; + cpu_data[cpu].global_id = cpu_logical_map(cpu); } void loongson_smp_finish(void) diff --git a/arch/loongarch/mm/kasan_init.c b/arch/loongarch/mm/kasan_init.c index 427d6b1aec09..d2681272d8f0 100644 --- a/arch/loongarch/mm/kasan_init.c +++ b/arch/loongarch/mm/kasan_init.c @@ -13,6 +13,13 @@ static pgd_t kasan_pg_dir[PTRS_PER_PGD] __initdata __aligned(PAGE_SIZE); +#ifdef __PAGETABLE_P4D_FOLDED +#define __pgd_none(early, pgd) (0) +#else +#define __pgd_none(early, pgd) (early ? (pgd_val(pgd) == 0) : \ +(__pa(pgd_val(pgd)) == (unsigned long)__pa(kasan_early_shadow_p4d))) +#endif + #ifdef __PAGETABLE_PUD_FOLDED #define __p4d_none(early, p4d) (0) #else @@ -55,6 +62,9 @@ void *kasan_mem_to_shadow(const void *addr) case XKPRANGE_UC_SEG: offset = XKPRANGE_UC_SHADOW_OFFSET; break; + case XKPRANGE_WC_SEG: + offset = XKPRANGE_WC_SHADOW_OFFSET; + break; case XKVRANGE_VC_SEG: offset = XKVRANGE_VC_SHADOW_OFFSET; break; @@ -79,6 +89,8 @@ const void *kasan_shadow_to_mem(const void *shadow_addr) if (addr >= XKVRANGE_VC_SHADOW_OFFSET) return (void *)(((addr - XKVRANGE_VC_SHADOW_OFFSET) << KASAN_SHADOW_SCALE_SHIFT) + XKVRANGE_VC_START); + else if (addr >= XKPRANGE_WC_SHADOW_OFFSET) + return (void *)(((addr - XKPRANGE_WC_SHADOW_OFFSET) << KASAN_SHADOW_SCALE_SHIFT) + XKPRANGE_WC_START); else if (addr >= XKPRANGE_UC_SHADOW_OFFSET) return (void *)(((addr - XKPRANGE_UC_SHADOW_OFFSET) << KASAN_SHADOW_SCALE_SHIFT) + XKPRANGE_UC_START); else if (addr >= XKPRANGE_CC_SHADOW_OFFSET) @@ -142,6 +154,19 @@ static pud_t *__init kasan_pud_offset(p4d_t *p4dp, unsigned long addr, int node, return pud_offset(p4dp, addr); } +static p4d_t *__init kasan_p4d_offset(pgd_t *pgdp, unsigned long addr, int node, bool early) +{ + if (__pgd_none(early, pgdp_get(pgdp))) { + phys_addr_t p4d_phys = early ? + __pa_symbol(kasan_early_shadow_p4d) : kasan_alloc_zeroed_page(node); + if (!early) + memcpy(__va(p4d_phys), kasan_early_shadow_p4d, sizeof(kasan_early_shadow_p4d)); + pgd_populate(&init_mm, pgdp, (p4d_t *)__va(p4d_phys)); + } + + return p4d_offset(pgdp, addr); +} + static void __init kasan_pte_populate(pmd_t *pmdp, unsigned long addr, unsigned long end, int node, bool early) { @@ -178,19 +203,19 @@ static void __init kasan_pud_populate(p4d_t *p4dp, unsigned long addr, do { next = pud_addr_end(addr, end); kasan_pmd_populate(pudp, addr, next, node, early); - } while (pudp++, addr = next, addr != end); + } while (pudp++, addr = next, addr != end && __pud_none(early, READ_ONCE(*pudp))); } static void __init kasan_p4d_populate(pgd_t *pgdp, unsigned long addr, unsigned long end, int node, bool early) { unsigned long next; - p4d_t *p4dp = p4d_offset(pgdp, addr); + p4d_t *p4dp = kasan_p4d_offset(pgdp, addr, node, early); do { next = p4d_addr_end(addr, end); kasan_pud_populate(p4dp, addr, next, node, early); - } while (p4dp++, addr = next, addr != end); + } while (p4dp++, addr = next, addr != end && __p4d_none(early, READ_ONCE(*p4dp))); } static void __init kasan_pgd_populate(unsigned long addr, unsigned long end, @@ -218,7 +243,7 @@ static void __init kasan_map_populate(unsigned long start, unsigned long end, asmlinkage void __init kasan_early_init(void) { BUILD_BUG_ON(!IS_ALIGNED(KASAN_SHADOW_START, PGDIR_SIZE)); - BUILD_BUG_ON(!IS_ALIGNED(KASAN_SHADOW_END, PGDIR_SIZE)); + BUILD_BUG_ON(!IS_ALIGNED(KASAN_SHADOW_END + 1, PGDIR_SIZE)); } static inline void kasan_set_pgd(pgd_t *pgdp, pgd_t pgdval) @@ -233,7 +258,7 @@ static void __init clear_pgds(unsigned long start, unsigned long end) * swapper_pg_dir. pgd_clear() can't be used * here because it's nop on 2,3-level pagetable setups */ - for (; start < end; start += PGDIR_SIZE) + for (; start < end; start = pgd_addr_end(start, end)) kasan_set_pgd((pgd_t *)pgd_offset_k(start), __pgd(0)); } @@ -243,6 +268,17 @@ void __init kasan_init(void) phys_addr_t pa_start, pa_end; /* + * If PGDIR_SIZE is too large for cpu_vabits, KASAN_SHADOW_END will + * overflow UINTPTR_MAX and then looks like a user space address. + * For example, PGDIR_SIZE of CONFIG_4KB_4LEVEL is 2^39, which is too + * large for Loongson-2K series whose cpu_vabits = 39. + */ + if (KASAN_SHADOW_END < vm_map_base) { + pr_warn("PGDIR_SIZE too large for cpu_vabits, KernelAddressSanitizer disabled.\n"); + return; + } + + /* * PGD was populated as invalid_pmd_table or invalid_pud_table * in pagetable_init() which depends on how many levels of page * table you are using, but we had to clean the gpd of kasan |