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x86/paravirt: Standardize 'insn_buff' variable names

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We currently have 6 (!) separate naming variants to name temporary instruction
buffers that are used for code patching:

 - insnbuf
 - insnbuff
 - insn_buff
 - insn_buffer
 - ibuf
 - ibuffer

These are used as local variables, percpu fields and function parameters.

Standardize all the names to a single variant: 'insn_buff'.

Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar
2019-04-25 13:03:31 +02:00
parent fc93dfd934
commit 1fc654cf6e
8 changed files with 93 additions and 96 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
arch/x86/tools/insn_sanity.c
View File

@@ -96,7 +96,7 @@ static void dump_insn(FILE *fp, struct insn *insn)
}
static void dump_stream(FILE *fp, const char *msg, unsigned long nr_iter,
unsigned char *insn_buf, struct insn *insn)
unsigned char *insn_buff, struct insn *insn)
{
int i;
@@ -109,7 +109,7 @@ static void dump_stream(FILE *fp, const char *msg, unsigned long nr_iter,
/* Input a decoded instruction sequence directly */
fprintf(fp, " $ echo ");
for (i = 0; i < MAX_INSN_SIZE; i++)
fprintf(fp, " %02x", insn_buf[i]);
fprintf(fp, " %02x", insn_buff[i]);
fprintf(fp, " | %s -i -\n", prog);
if (!input_file) {
@@ -137,7 +137,7 @@ fail:
}
/* Read given instruction sequence from the input file */
static int read_next_insn(unsigned char *insn_buf)
static int read_next_insn(unsigned char *insn_buff)
{
char buf[256] = "", *tmp;
int i;
@@ -147,7 +147,7 @@ static int read_next_insn(unsigned char *insn_buf)
return 0;
for (i = 0; i < MAX_INSN_SIZE; i++) {
insn_buf[i] = (unsigned char)strtoul(tmp, &tmp, 16);
insn_buff[i] = (unsigned char)strtoul(tmp, &tmp, 16);
if (*tmp != ' ')
break;
}
@@ -155,19 +155,19 @@ static int read_next_insn(unsigned char *insn_buf)
return i;
}
static int generate_insn(unsigned char *insn_buf)
static int generate_insn(unsigned char *insn_buff)
{
int i;
if (input_file)
return read_next_insn(insn_buf);
return read_next_insn(insn_buff);
/* Fills buffer with random binary up to MAX_INSN_SIZE */
for (i = 0; i < MAX_INSN_SIZE - 1; i += 2)
*(unsigned short *)(&insn_buf[i]) = random() & 0xffff;
*(unsigned short *)(&insn_buff[i]) = random() & 0xffff;
while (i < MAX_INSN_SIZE)
insn_buf[i++] = random() & 0xff;
insn_buff[i++] = random() & 0xff;
return i;
}
@@ -239,31 +239,31 @@ int main(int argc, char **argv)
int insns = 0;
int errors = 0;
unsigned long i;
unsigned char insn_buf[MAX_INSN_SIZE * 2];
unsigned char insn_buff[MAX_INSN_SIZE * 2];
parse_args(argc, argv);
/* Prepare stop bytes with NOPs */
memset(insn_buf + MAX_INSN_SIZE, INSN_NOP, MAX_INSN_SIZE);
memset(insn_buff + MAX_INSN_SIZE, INSN_NOP, MAX_INSN_SIZE);
for (i = 0; i < iter_end; i++) {
if (generate_insn(insn_buf) <= 0)
if (generate_insn(insn_buff) <= 0)
break;
if (i < iter_start) /* Skip to given iteration number */
continue;
/* Decode an instruction */
insn_init(&insn, insn_buf, sizeof(insn_buf), x86_64);
insn_init(&insn, insn_buff, sizeof(insn_buff), x86_64);
insn_get_length(&insn);
if (insn.next_byte <= insn.kaddr ||
insn.kaddr + MAX_INSN_SIZE < insn.next_byte) {
/* Access out-of-range memory */
dump_stream(stderr, "Error: Found an access violation", i, insn_buf, &insn);
dump_stream(stderr, "Error: Found an access violation", i, insn_buff, &insn);
errors++;
} else if (verbose && !insn_complete(&insn))
dump_stream(stdout, "Info: Found an undecodable input", i, insn_buf, &insn);
dump_stream(stdout, "Info: Found an undecodable input", i, insn_buff, &insn);
else if (verbose >= 2)
dump_insn(stdout, &insn);
insns++;