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kvm-unit-test: Add a few benchmarks and run them longer

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This commit is contained in:
Fabian 2020-12-31 19:14:34 -06:00
parent 51323eaae0
commit 751cfed489
1 changed files with 25 additions and 1 deletions
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26
tests/kvm-unit-tests/x86/realmode.c
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@ -1584,7 +1584,7 @@ static void test_nopl(void)
static u64 perf_baseline;
#define PERF_COUNT_SHIFT (27)
#define PERF_COUNT_SHIFT (30)
// 2**27 = ~1 second at 100 mIPS
#define PERF_COUNT (1 << PERF_COUNT_SHIFT)
@ -1678,6 +1678,28 @@ static void test_perf_memory_rmw(void)
print_serial(" millicycles/emulated memory RMW instruction\n");
}
static void test_perf_memory_shl(void)
{
u64 cyc, tmp;
MK_INSN_PERF(perf_memory_shl, "shl $1, %edi");
init_inregs(&(struct regs){ .edi = (u32)&tmp });
cyc = cycles_in_big_real_mode(&insn_perf_memory_shl);
print_serial_u32(cyc * 1000 >> PERF_COUNT_SHIFT);
print_serial(" millicycles/emulated SHL instruction\n");
}
static void test_perf_memory_adc(void)
{
u64 cyc, tmp;
MK_INSN_PERF(perf_memory_adc, "adc $1, %edi");
init_inregs(&(struct regs){ .edi = (u32)&tmp });
cyc = cycles_in_big_real_mode(&insn_perf_memory_adc);
print_serial_u32(cyc * 1000 >> PERF_COUNT_SHIFT);
print_serial(" millicycles/emulated ADC instruction\n");
}
void test_dr_mod(void)
{
MK_INSN(drmod, "movl %ebx, %dr0\n\t"
@ -1767,6 +1789,8 @@ void realmode_start(void)
test_perf_loop();
test_perf_mov();
test_perf_arith();
test_perf_memory_shl();
test_perf_memory_adc();
test_perf_memory_load();
test_perf_memory_store();
test_perf_memory_rmw();