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x86/insn: Rename insn_decode() to insn_decode_from_regs() 

Rename insn_decode() to insn_decode_from_regs() to denote that it
receives regs as param and uses registers from there during decoding.
Free the former name for a more generic version of the function.

No functional changes.

Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210304174237.31945-2-bp@alien8.de
This commit is contained in:
Borislav Petkov 2020-11-02 18:47:34 +01:00
parent 0d39131980
commit 9e761296c5
4 changed files with 7 additions and 7 deletions
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4
arch/x86/include/asm/insn-eval.h
View File

@ -25,7 +25,7 @@ int insn_fetch_from_user(struct pt_regs *regs,
unsigned char buf[MAX_INSN_SIZE]);
int insn_fetch_from_user_inatomic(struct pt_regs *regs,
unsigned char buf[MAX_INSN_SIZE]);
bool insn_decode(struct insn *insn, struct pt_regs *regs,
unsigned char buf[MAX_INSN_SIZE], int buf_size);
bool insn_decode_from_regs(struct insn *insn, struct pt_regs *regs,
unsigned char buf[MAX_INSN_SIZE], int buf_size);
#endif /* _ASM_X86_INSN_EVAL_H */

2
arch/x86/kernel/sev-es.c
View File

@ -266,7 +266,7 @@ static enum es_result vc_decode_insn(struct es_em_ctxt *ctxt)
return ES_EXCEPTION;
}
if (!insn_decode(&ctxt->insn, ctxt->regs, buffer, res))
if (!insn_decode_from_regs(&ctxt->insn, ctxt->regs, buffer, res))
return ES_DECODE_FAILED;
} else {
res = vc_fetch_insn_kernel(ctxt, buffer);

2
arch/x86/kernel/umip.c
View File

@ -356,7 +356,7 @@ bool fixup_umip_exception(struct pt_regs *regs)
if (!nr_copied)
return false;
if (!insn_decode(&insn, regs, buf, nr_copied))
if (!insn_decode_from_regs(&insn, regs, buf, nr_copied))
return false;
umip_inst = identify_insn(&insn);

6
arch/x86/lib/insn-eval.c
View File

@ -1488,7 +1488,7 @@ int insn_fetch_from_user_inatomic(struct pt_regs *regs, unsigned char buf[MAX_IN
}
/**
* insn_decode() - Decode an instruction
* insn_decode_from_regs() - Decode an instruction
* @insn: Structure to store decoded instruction
* @regs: Structure with register values as seen when entering kernel mode
* @buf: Buffer containing the instruction bytes
@ -1501,8 +1501,8 @@ int insn_fetch_from_user_inatomic(struct pt_regs *regs, unsigned char buf[MAX_IN
*
* True if instruction was decoded, False otherwise.
*/
bool insn_decode(struct insn *insn, struct pt_regs *regs,
unsigned char buf[MAX_INSN_SIZE], int buf_size)
bool insn_decode_from_regs(struct insn *insn, struct pt_regs *regs,
unsigned char buf[MAX_INSN_SIZE], int buf_size)
{
int seg_defs;