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charset="utf-8" Add information for cpuid 0x8000001D leaf. Populate cache topology informat= ion for different cache types(Data Cache, Instruction Cache, L2 and L3) support= ed by 0x8000001D leaf. Please refer Processor Programming Reference (PPR) for = AMD Family 17h Model for more details. Signed-off-by: Babu Moger Tested-by: Geoffrey McRae --- target/i386/cpu.c | 79 +++++++++++++++++++++++++++++++++++++++++++++++ target/i386/kvm.c | 29 +++++++++++++++-- 2 files changed, 105 insertions(+), 3 deletions(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index e1daff37ab..7f40241786 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -307,6 +307,14 @@ static uint32_t encode_cache_cpuid80000005(CPUCacheInf= o *cache) a =3D=3D ASSOC_FULL ? 0xF : \ 0 /* invalid value */) =20 +/* Definitions used on CPUID Leaf 0x8000001D */ +/* Number of logical cores in a complex */ +#define CORES_IN_CMPLX 4 +/* Number of logical processors sharing cache */ +#define NUM_SHARING_CACHE(threads) ((threads > 1) ? \ + (((CORES_IN_CMPLX - 1) * threads) + 1) : \ + (CORES_IN_CMPLX - 1)) + /* * Encode cache info for CPUID[0x80000006].ECX and CPUID[0x80000006].EDX * @l3 can be NULL. @@ -336,6 +344,41 @@ static void encode_cache_cpuid80000006(CPUCacheInfo *l= 2, } } =20 +/* Encode cache info for CPUID[8000001D] */ +static void encode_cache_cpuid8000001d(CPUCacheInfo *cache, int nr_threads, + uint32_t *eax, uint32_t *ebx, + uint32_t *ecx, uint32_t *edx) +{ + assert(cache->size =3D=3D cache->line_size * cache->associativity * + cache->partitions * cache->sets); + + *eax =3D CACHE_TYPE(cache->type) | CACHE_LEVEL(cache->level) | + (cache->self_init ? CACHE_SELF_INIT_LEVEL : 0); + + /* L3 is shared among multiple cores */ + if (cache->level =3D=3D 3) { + *eax |=3D (NUM_SHARING_CACHE(nr_threads) << 14); + } else { + *eax |=3D ((nr_threads - 1) << 14); + } + + assert(cache->line_size > 0); + assert(cache->partitions > 0); + assert(cache->associativity > 0); + /* We don't implement fully-associative caches */ + assert(cache->associativity < cache->sets); + *ebx =3D (cache->line_size - 1) | + ((cache->partitions - 1) << 12) | + ((cache->associativity - 1) << 22); + + assert(cache->sets > 0); + *ecx =3D cache->sets - 1; + + *edx =3D (cache->no_invd_sharing ? CACHE_NO_INVD_SHARING : 0) | + (cache->inclusive ? CACHE_INCLUSIVE : 0) | + (cache->complex_indexing ? CACHE_COMPLEX_IDX : 0); +} + /* * Definitions of the hardcoded cache entries we expose: * These are legacy cache values. If there is a need to change any @@ -4035,6 +4078,42 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index,= uint32_t count, *edx =3D 0; } break; + case 0x8000001D: + *eax =3D 0; + CPUCacheInfo *l1d, *l1i, *l2, *l3; + if (env->cache_info && !cpu->legacy_cache) { + l1d =3D &env->cache_info->l1d_cache; + l1i =3D &env->cache_info->l1i_cache; + l2 =3D &env->cache_info->l2_cache; + l3 =3D &env->cache_info->l3_cache; + } else { + l1d =3D &legacy_l1d_cache_amd; + l1i =3D &legacy_l1i_cache_amd; + l2 =3D &legacy_l2_cache_amd; + l3 =3D &legacy_l3_cache; + } + switch (count) { + case 0: /* L1 dcache info */ + encode_cache_cpuid8000001d(l1d, cs->nr_threads, + eax, ebx, ecx, edx); + break; + case 1: /* L1 icache info */ + encode_cache_cpuid8000001d(l1i, cs->nr_threads, + eax, ebx, ecx, edx); + break; + case 2: /* L2 cache info */ + encode_cache_cpuid8000001d(l2, cs->nr_threads, + eax, ebx, ecx, edx); + break; + case 3: /* L3 cache info */ + encode_cache_cpuid8000001d(l3, cs->nr_threads, + eax, ebx, ecx, edx); + break; + default: /* end of info */ + *eax =3D *ebx =3D *ecx =3D *edx =3D 0; + break; + } + break; case 0xC0000000: *eax =3D env->cpuid_xlevel2; *ebx =3D 0; diff --git a/target/i386/kvm.c b/target/i386/kvm.c index 6c49954e68..6e66f9c51d 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -967,9 +967,32 @@ int kvm_arch_init_vcpu(CPUState *cs) } c =3D &cpuid_data.entries[cpuid_i++]; =20 - c->function =3D i; - c->flags =3D 0; - cpu_x86_cpuid(env, i, 0, &c->eax, &c->ebx, &c->ecx, &c->edx); + switch (i) { + case 0x8000001d: + /* Query for all AMD cache information leaves */ + for (j =3D 0; ; j++) { + c->function =3D i; + c->flags =3D KVM_CPUID_FLAG_SIGNIFCANT_INDEX; + c->index =3D j; + cpu_x86_cpuid(env, i, j, &c->eax, &c->ebx, &c->ecx, &c->ed= x); + + if (c->eax =3D=3D 0) { + break; + } + if (cpuid_i =3D=3D KVM_MAX_CPUID_ENTRIES) { + fprintf(stderr, "cpuid_data is full, no space for " + "cpuid(eax:0x%x,ecx:0x%x)\n", i, j); + abort(); + } + c =3D &cpuid_data.entries[cpuid_i++]; + } + break; + default: + c->function =3D i; + c->flags =3D 0; + cpu_x86_cpuid(env, i, 0, &c->eax, &c->ebx, &c->ecx, &c->edx); + break; + } } =20 /* Call Centaur's CPUID instructions they are supported. */ --=20 2.17.0