Commit f8324608 authored by Linus Torvalds's avatar Linus Torvalds

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc

Pull sparc fixes from David Miller:
 "I didn't want the release to go out without the statx system call
  properly hooked up"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc: Update syscall tables.
  sparc64: Fill in rest of HAVE_REGS_AND_STACK_ACCESS_API
parents 1e2f82d1 f6ebf0bb
......@@ -82,6 +82,7 @@ config SPARC64
select HAVE_ARCH_AUDITSYSCALL
select ARCH_SUPPORTS_ATOMIC_RMW
select HAVE_NMI
select HAVE_REGS_AND_STACK_ACCESS_API
config ARCH_DEFCONFIG
string
......
......@@ -83,7 +83,8 @@ unsigned long profile_pc(struct pt_regs *);
#define MAX_REG_OFFSET (offsetof(struct pt_regs, magic))
extern int regs_query_register_offset(const char *name);
int regs_query_register_offset(const char *name);
unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n);
/**
* regs_get_register() - get register value from its offset
......
......@@ -425,8 +425,9 @@
#define __NR_copy_file_range 357
#define __NR_preadv2 358
#define __NR_pwritev2 359
#define __NR_statx 360
#define NR_syscalls 360
#define NR_syscalls 361
/* Bitmask values returned from kern_features system call. */
#define KERN_FEATURE_MIXED_MODE_STACK 0x00000001
......@@ -442,4 +443,9 @@
#define __IGNORE_getresgid
#endif
/* Sparc doesn't have protection keys. */
#define __IGNORE_pkey_mprotect
#define __IGNORE_pkey_alloc
#define __IGNORE_pkey_free
#endif /* _UAPI_SPARC_UNISTD_H */
......@@ -1162,3 +1162,39 @@ int regs_query_register_offset(const char *name)
return roff->offset;
return -EINVAL;
}
/**
* regs_within_kernel_stack() - check the address in the stack
* @regs: pt_regs which contains kernel stack pointer.
* @addr: address which is checked.
*
* regs_within_kernel_stack() checks @addr is within the kernel stack page(s).
* If @addr is within the kernel stack, it returns true. If not, returns false.
*/
static inline int regs_within_kernel_stack(struct pt_regs *regs,
unsigned long addr)
{
unsigned long ksp = kernel_stack_pointer(regs) + STACK_BIAS;
return ((addr & ~(THREAD_SIZE - 1)) ==
(ksp & ~(THREAD_SIZE - 1)));
}
/**
* regs_get_kernel_stack_nth() - get Nth entry of the stack
* @regs: pt_regs which contains kernel stack pointer.
* @n: stack entry number.
*
* regs_get_kernel_stack_nth() returns @n th entry of the kernel stack which
* is specified by @regs. If the @n th entry is NOT in the kernel stack,
* this returns 0.
*/
unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n)
{
unsigned long ksp = kernel_stack_pointer(regs) + STACK_BIAS;
unsigned long *addr = (unsigned long *)ksp;
addr += n;
if (regs_within_kernel_stack(regs, (unsigned long)addr))
return *addr;
else
return 0;
}
......@@ -89,3 +89,4 @@ sys_call_table:
/*345*/ .long sys_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf
/*350*/ .long sys_execveat, sys_membarrier, sys_userfaultfd, sys_bind, sys_listen
/*355*/ .long sys_setsockopt, sys_mlock2, sys_copy_file_range, sys_preadv2, sys_pwritev2
/*360*/ .long sys_statx
......@@ -90,6 +90,7 @@ sys_call_table32:
.word sys32_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf
/*350*/ .word sys32_execveat, sys_membarrier, sys_userfaultfd, sys_bind, sys_listen
.word compat_sys_setsockopt, sys_mlock2, sys_copy_file_range, compat_sys_preadv2, compat_sys_pwritev2
/*360*/ .word sys_statx
#endif /* CONFIG_COMPAT */
......@@ -171,3 +172,4 @@ sys_call_table:
.word sys_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf
/*350*/ .word sys64_execveat, sys_membarrier, sys_userfaultfd, sys_bind, sys_listen
.word sys_setsockopt, sys_mlock2, sys_copy_file_range, sys_preadv2, sys_pwritev2
/*360*/ .word sys_statx
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