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maccess: rename probe_kernel_address to get_kernel_nofault

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Better describe what this helper does, and match the naming of
copy_from_kernel_nofault.

Also switch the argument order around, so that it acts and looks
like get_user().

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig
2020-06-17 09:37:55 +02:00
committed by Linus Torvalds
parent c0ee37e85e
commit 25f12ae45f
20 changed files with 40 additions and 40 deletions
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4
arch/riscv/kernel/kgdb.c
View File

@@ -62,7 +62,7 @@ int get_step_address(struct pt_regs *regs, unsigned long *next_addr)
unsigned int rs1_num, rs2_num;
int op_code;
if (probe_kernel_address((void *)pc, op_code))
if (get_kernel_nofault(op_code, (void *)pc))
return -EINVAL;
if ((op_code & __INSN_LENGTH_MASK) != __INSN_LENGTH_GE_32) {
if (is_c_jalr_insn(op_code) || is_c_jr_insn(op_code)) {
@@ -146,7 +146,7 @@ int do_single_step(struct pt_regs *regs)
return error;
/* Store the op code in the stepped address */
error = probe_kernel_address((void *)addr, stepped_opcode);
error = get_kernel_nofault(stepped_opcode, (void *)addr);
if (error)
return error;

4
arch/riscv/kernel/traps.c
View File

@@ -137,7 +137,7 @@ static inline unsigned long get_break_insn_length(unsigned long pc)
{
bug_insn_t insn;
if (probe_kernel_address((bug_insn_t *)pc, insn))
if (get_kernel_nofault(insn, (bug_insn_t *)pc))
return 0;
return GET_INSN_LENGTH(insn);
@@ -165,7 +165,7 @@ int is_valid_bugaddr(unsigned long pc)
if (pc < VMALLOC_START)
return 0;
if (probe_kernel_address((bug_insn_t *)pc, insn))
if (get_kernel_nofault(insn, (bug_insn_t *)pc))
return 0;
if ((insn & __INSN_LENGTH_MASK) == __INSN_LENGTH_32)
return (insn == __BUG_INSN_32);