diff options
Diffstat (limited to 'arch/parisc')
| -rw-r--r-- | arch/parisc/include/uapi/asm/mman.h | 17 | ||||
| -rw-r--r-- | arch/parisc/kernel/firmware.c | 5 | ||||
| -rw-r--r-- | arch/parisc/kernel/ptrace.c | 15 | ||||
| -rw-r--r-- | arch/parisc/kernel/sys_parisc.c | 27 | ||||
| -rw-r--r-- | arch/parisc/kernel/syscall_table.S | 2 | ||||
| -rw-r--r-- | arch/parisc/kernel/traps.c | 2 |
6 files changed, 53 insertions, 15 deletions
diff --git a/arch/parisc/include/uapi/asm/mman.h b/arch/parisc/include/uapi/asm/mman.h index 870fbf8c7..13f61fdf3 100644 --- a/arch/parisc/include/uapi/asm/mman.h +++ b/arch/parisc/include/uapi/asm/mman.h @@ -50,25 +50,24 @@ #define MADV_DONTFORK 10 /* don't inherit across fork */ #define MADV_DOFORK 11 /* do inherit across fork */ -#define MADV_MERGEABLE 65 /* KSM may merge identical pages */ -#define MADV_UNMERGEABLE 66 /* KSM may not merge identical pages */ +#define MADV_MERGEABLE 12 /* KSM may merge identical pages */ +#define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */ -#define MADV_HUGEPAGE 67 /* Worth backing with hugepages */ -#define MADV_NOHUGEPAGE 68 /* Not worth backing with hugepages */ +#define MADV_HUGEPAGE 14 /* Worth backing with hugepages */ +#define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */ -#define MADV_DONTDUMP 69 /* Explicity exclude from the core dump, +#define MADV_DONTDUMP 16 /* Explicity exclude from the core dump, overrides the coredump filter bits */ -#define MADV_DODUMP 70 /* Clear the MADV_NODUMP flag */ +#define MADV_DODUMP 17 /* Clear the MADV_NODUMP flag */ -#define MADV_WIPEONFORK 71 /* Zero memory on fork, child only */ -#define MADV_KEEPONFORK 72 /* Undo MADV_WIPEONFORK */ +#define MADV_WIPEONFORK 18 /* Zero memory on fork, child only */ +#define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK */ #define MADV_HWPOISON 100 /* poison a page for testing */ #define MADV_SOFT_OFFLINE 101 /* soft offline page for testing */ /* compatibility flags */ #define MAP_FILE 0 -#define MAP_VARIABLE 0 #define PKEY_DISABLE_ACCESS 0x1 #define PKEY_DISABLE_WRITE 0x2 diff --git a/arch/parisc/kernel/firmware.c b/arch/parisc/kernel/firmware.c index 6d471c00c..906b7c882 100644 --- a/arch/parisc/kernel/firmware.c +++ b/arch/parisc/kernel/firmware.c @@ -1197,7 +1197,7 @@ static char __attribute__((aligned(64))) iodc_dbuf[4096]; */ int pdc_iodc_print(const unsigned char *str, unsigned count) { - unsigned int i; + unsigned int i, found = 0; unsigned long flags; for (i = 0; i < count;) { @@ -1206,6 +1206,7 @@ int pdc_iodc_print(const unsigned char *str, unsigned count) iodc_dbuf[i+0] = '\r'; iodc_dbuf[i+1] = '\n'; i += 2; + found = 1; goto print; default: iodc_dbuf[i] = str[i]; @@ -1222,7 +1223,7 @@ print: __pa(iodc_retbuf), 0, __pa(iodc_dbuf), i, 0); spin_unlock_irqrestore(&pdc_lock, flags); - return i; + return i - found; } #if !defined(BOOTLOADER) diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c index de2998cb1..bc94acdbf 100644 --- a/arch/parisc/kernel/ptrace.c +++ b/arch/parisc/kernel/ptrace.c @@ -128,6 +128,12 @@ long arch_ptrace(struct task_struct *child, long request, unsigned long tmp; long ret = -EIO; + unsigned long user_regs_struct_size = sizeof(struct user_regs_struct); +#ifdef CONFIG_64BIT + if (is_compat_task()) + user_regs_struct_size /= 2; +#endif + switch (request) { /* Read the word at location addr in the USER area. For ptraced @@ -183,14 +189,14 @@ long arch_ptrace(struct task_struct *child, long request, return copy_regset_to_user(child, task_user_regset_view(current), REGSET_GENERAL, - 0, sizeof(struct user_regs_struct), + 0, user_regs_struct_size, datap); case PTRACE_SETREGS: /* Set all gp regs in the child. */ return copy_regset_from_user(child, task_user_regset_view(current), REGSET_GENERAL, - 0, sizeof(struct user_regs_struct), + 0, user_regs_struct_size, datap); case PTRACE_GETFPREGS: /* Get the child FPU state. */ @@ -304,6 +310,11 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, } } break; + case PTRACE_GETREGS: + case PTRACE_SETREGS: + case PTRACE_GETFPREGS: + case PTRACE_SETFPREGS: + return arch_ptrace(child, request, addr, data); default: ret = compat_ptrace_request(child, request, addr, data); diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c index 376ea0d1b..4306d1bea 100644 --- a/arch/parisc/kernel/sys_parisc.c +++ b/arch/parisc/kernel/sys_parisc.c @@ -386,3 +386,30 @@ long parisc_personality(unsigned long personality) return err; } + +/* + * madvise() wrapper + * + * Up to kernel v6.1 parisc has different values than all other + * platforms for the MADV_xxx flags listed below. + * To keep binary compatibility with existing userspace programs + * translate the former values to the new values. + * + * XXX: Remove this wrapper in year 2025 (or later) + */ + +asmlinkage notrace long parisc_madvise(unsigned long start, size_t len_in, int behavior) +{ + switch (behavior) { + case 65: behavior = MADV_MERGEABLE; break; + case 66: behavior = MADV_UNMERGEABLE; break; + case 67: behavior = MADV_HUGEPAGE; break; + case 68: behavior = MADV_NOHUGEPAGE; break; + case 69: behavior = MADV_DONTDUMP; break; + case 70: behavior = MADV_DODUMP; break; + case 71: behavior = MADV_WIPEONFORK; break; + case 72: behavior = MADV_KEEPONFORK; break; + } + + return sys_madvise(start, len_in, behavior); +} diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S index fe3f2a49d..64a72f161 100644 --- a/arch/parisc/kernel/syscall_table.S +++ b/arch/parisc/kernel/syscall_table.S @@ -195,7 +195,7 @@ ENTRY_COMP(sysinfo) ENTRY_SAME(shutdown) ENTRY_SAME(fsync) - ENTRY_SAME(madvise) + ENTRY_OURS(madvise) ENTRY_SAME(clone_wrapper) /* 120 */ ENTRY_SAME(setdomainname) ENTRY_COMP(sendfile) diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c index d7a66d852..5d9cf726e 100644 --- a/arch/parisc/kernel/traps.c +++ b/arch/parisc/kernel/traps.c @@ -265,7 +265,7 @@ void die_if_kernel(char *str, struct pt_regs *regs, long err) panic("Fatal exception"); oops_exit(); - do_exit(SIGSEGV); + make_task_dead(SIGSEGV); } /* gdb uses break 4,8 */ |