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cpu.c
6064 lines (5605 loc) · 215 KB
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cpu.c
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/*
* i386 CPUID helper functions
*
* Copyright (c) 2003 Fabrice Bellard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "qemu/units.h"
#include "qemu/cutils.h"
#include "qemu/bitops.h"
#include "qemu/qemu-print.h"
#include "cpu.h"
#include "exec/exec-all.h"
#include "sysemu/kvm.h"
#include "sysemu/hvf.h"
#include "sysemu/cpus.h"
#include "kvm_i386.h"
#include "sev_i386.h"
#include "qemu/error-report.h"
#include "qemu/module.h"
#include "qemu/option.h"
#include "qemu/config-file.h"
#include "qapi/error.h"
#include "qapi/qapi-visit-misc.h"
#include "qapi/qapi-visit-run-state.h"
#include "qapi/qmp/qdict.h"
#include "qapi/qmp/qerror.h"
#include "qapi/visitor.h"
#include "qom/qom-qobject.h"
#include "sysemu/arch_init.h"
#include "qapi/qapi-commands-target.h"
#include "standard-headers/asm-x86/kvm_para.h"
#include "sysemu/sysemu.h"
#include "sysemu/tcg.h"
#include "hw/qdev-properties.h"
#include "hw/i386/topology.h"
#ifndef CONFIG_USER_ONLY
#include "exec/address-spaces.h"
#include "hw/hw.h"
#include "hw/xen/xen.h"
#include "hw/i386/apic_internal.h"
#endif
#include "disas/capstone.h"
/* Helpers for building CPUID[2] descriptors: */
struct CPUID2CacheDescriptorInfo {
enum CacheType type;
int level;
int size;
int line_size;
int associativity;
};
/*
* Known CPUID 2 cache descriptors.
* From Intel SDM Volume 2A, CPUID instruction
*/
struct CPUID2CacheDescriptorInfo cpuid2_cache_descriptors[] = {
[0x06] = { .level = 1, .type = INSTRUCTION_CACHE, .size = 8 * KiB,
.associativity = 4, .line_size = 32, },
[0x08] = { .level = 1, .type = INSTRUCTION_CACHE, .size = 16 * KiB,
.associativity = 4, .line_size = 32, },
[0x09] = { .level = 1, .type = INSTRUCTION_CACHE, .size = 32 * KiB,
.associativity = 4, .line_size = 64, },
[0x0A] = { .level = 1, .type = DATA_CACHE, .size = 8 * KiB,
.associativity = 2, .line_size = 32, },
[0x0C] = { .level = 1, .type = DATA_CACHE, .size = 16 * KiB,
.associativity = 4, .line_size = 32, },
[0x0D] = { .level = 1, .type = DATA_CACHE, .size = 16 * KiB,
.associativity = 4, .line_size = 64, },
[0x0E] = { .level = 1, .type = DATA_CACHE, .size = 24 * KiB,
.associativity = 6, .line_size = 64, },
[0x1D] = { .level = 2, .type = UNIFIED_CACHE, .size = 128 * KiB,
.associativity = 2, .line_size = 64, },
[0x21] = { .level = 2, .type = UNIFIED_CACHE, .size = 256 * KiB,
.associativity = 8, .line_size = 64, },
/* lines per sector is not supported cpuid2_cache_descriptor(),
* so descriptors 0x22, 0x23 are not included
*/
[0x24] = { .level = 2, .type = UNIFIED_CACHE, .size = 1 * MiB,
.associativity = 16, .line_size = 64, },
/* lines per sector is not supported cpuid2_cache_descriptor(),
* so descriptors 0x25, 0x20 are not included
*/
[0x2C] = { .level = 1, .type = DATA_CACHE, .size = 32 * KiB,
.associativity = 8, .line_size = 64, },
[0x30] = { .level = 1, .type = INSTRUCTION_CACHE, .size = 32 * KiB,
.associativity = 8, .line_size = 64, },
[0x41] = { .level = 2, .type = UNIFIED_CACHE, .size = 128 * KiB,
.associativity = 4, .line_size = 32, },
[0x42] = { .level = 2, .type = UNIFIED_CACHE, .size = 256 * KiB,
.associativity = 4, .line_size = 32, },
[0x43] = { .level = 2, .type = UNIFIED_CACHE, .size = 512 * KiB,
.associativity = 4, .line_size = 32, },
[0x44] = { .level = 2, .type = UNIFIED_CACHE, .size = 1 * MiB,
.associativity = 4, .line_size = 32, },
[0x45] = { .level = 2, .type = UNIFIED_CACHE, .size = 2 * MiB,
.associativity = 4, .line_size = 32, },
[0x46] = { .level = 3, .type = UNIFIED_CACHE, .size = 4 * MiB,
.associativity = 4, .line_size = 64, },
[0x47] = { .level = 3, .type = UNIFIED_CACHE, .size = 8 * MiB,
.associativity = 8, .line_size = 64, },
[0x48] = { .level = 2, .type = UNIFIED_CACHE, .size = 3 * MiB,
.associativity = 12, .line_size = 64, },
/* Descriptor 0x49 depends on CPU family/model, so it is not included */
[0x4A] = { .level = 3, .type = UNIFIED_CACHE, .size = 6 * MiB,
.associativity = 12, .line_size = 64, },
[0x4B] = { .level = 3, .type = UNIFIED_CACHE, .size = 8 * MiB,
.associativity = 16, .line_size = 64, },
[0x4C] = { .level = 3, .type = UNIFIED_CACHE, .size = 12 * MiB,
.associativity = 12, .line_size = 64, },
[0x4D] = { .level = 3, .type = UNIFIED_CACHE, .size = 16 * MiB,
.associativity = 16, .line_size = 64, },
[0x4E] = { .level = 2, .type = UNIFIED_CACHE, .size = 6 * MiB,
.associativity = 24, .line_size = 64, },
[0x60] = { .level = 1, .type = DATA_CACHE, .size = 16 * KiB,
.associativity = 8, .line_size = 64, },
[0x66] = { .level = 1, .type = DATA_CACHE, .size = 8 * KiB,
.associativity = 4, .line_size = 64, },
[0x67] = { .level = 1, .type = DATA_CACHE, .size = 16 * KiB,
.associativity = 4, .line_size = 64, },
[0x68] = { .level = 1, .type = DATA_CACHE, .size = 32 * KiB,
.associativity = 4, .line_size = 64, },
[0x78] = { .level = 2, .type = UNIFIED_CACHE, .size = 1 * MiB,
.associativity = 4, .line_size = 64, },
/* lines per sector is not supported cpuid2_cache_descriptor(),
* so descriptors 0x79, 0x7A, 0x7B, 0x7C are not included.
*/
[0x7D] = { .level = 2, .type = UNIFIED_CACHE, .size = 2 * MiB,
.associativity = 8, .line_size = 64, },
[0x7F] = { .level = 2, .type = UNIFIED_CACHE, .size = 512 * KiB,
.associativity = 2, .line_size = 64, },
[0x80] = { .level = 2, .type = UNIFIED_CACHE, .size = 512 * KiB,
.associativity = 8, .line_size = 64, },
[0x82] = { .level = 2, .type = UNIFIED_CACHE, .size = 256 * KiB,
.associativity = 8, .line_size = 32, },
[0x83] = { .level = 2, .type = UNIFIED_CACHE, .size = 512 * KiB,
.associativity = 8, .line_size = 32, },
[0x84] = { .level = 2, .type = UNIFIED_CACHE, .size = 1 * MiB,
.associativity = 8, .line_size = 32, },
[0x85] = { .level = 2, .type = UNIFIED_CACHE, .size = 2 * MiB,
.associativity = 8, .line_size = 32, },
[0x86] = { .level = 2, .type = UNIFIED_CACHE, .size = 512 * KiB,
.associativity = 4, .line_size = 64, },
[0x87] = { .level = 2, .type = UNIFIED_CACHE, .size = 1 * MiB,
.associativity = 8, .line_size = 64, },
[0xD0] = { .level = 3, .type = UNIFIED_CACHE, .size = 512 * KiB,
.associativity = 4, .line_size = 64, },
[0xD1] = { .level = 3, .type = UNIFIED_CACHE, .size = 1 * MiB,
.associativity = 4, .line_size = 64, },
[0xD2] = { .level = 3, .type = UNIFIED_CACHE, .size = 2 * MiB,
.associativity = 4, .line_size = 64, },
[0xD6] = { .level = 3, .type = UNIFIED_CACHE, .size = 1 * MiB,
.associativity = 8, .line_size = 64, },
[0xD7] = { .level = 3, .type = UNIFIED_CACHE, .size = 2 * MiB,
.associativity = 8, .line_size = 64, },
[0xD8] = { .level = 3, .type = UNIFIED_CACHE, .size = 4 * MiB,
.associativity = 8, .line_size = 64, },
[0xDC] = { .level = 3, .type = UNIFIED_CACHE, .size = 1.5 * MiB,
.associativity = 12, .line_size = 64, },
[0xDD] = { .level = 3, .type = UNIFIED_CACHE, .size = 3 * MiB,
.associativity = 12, .line_size = 64, },
[0xDE] = { .level = 3, .type = UNIFIED_CACHE, .size = 6 * MiB,
.associativity = 12, .line_size = 64, },
[0xE2] = { .level = 3, .type = UNIFIED_CACHE, .size = 2 * MiB,
.associativity = 16, .line_size = 64, },
[0xE3] = { .level = 3, .type = UNIFIED_CACHE, .size = 4 * MiB,
.associativity = 16, .line_size = 64, },
[0xE4] = { .level = 3, .type = UNIFIED_CACHE, .size = 8 * MiB,
.associativity = 16, .line_size = 64, },
[0xEA] = { .level = 3, .type = UNIFIED_CACHE, .size = 12 * MiB,
.associativity = 24, .line_size = 64, },
[0xEB] = { .level = 3, .type = UNIFIED_CACHE, .size = 18 * MiB,
.associativity = 24, .line_size = 64, },
[0xEC] = { .level = 3, .type = UNIFIED_CACHE, .size = 24 * MiB,
.associativity = 24, .line_size = 64, },
};
/*
* "CPUID leaf 2 does not report cache descriptor information,
* use CPUID leaf 4 to query cache parameters"
*/
#define CACHE_DESCRIPTOR_UNAVAILABLE 0xFF
/*
* Return a CPUID 2 cache descriptor for a given cache.
* If no known descriptor is found, return CACHE_DESCRIPTOR_UNAVAILABLE
*/
static uint8_t cpuid2_cache_descriptor(CPUCacheInfo *cache)
{
int i;
assert(cache->size > 0);
assert(cache->level > 0);
assert(cache->line_size > 0);
assert(cache->associativity > 0);
for (i = 0; i < ARRAY_SIZE(cpuid2_cache_descriptors); i++) {
struct CPUID2CacheDescriptorInfo *d = &cpuid2_cache_descriptors[i];
if (d->level == cache->level && d->type == cache->type &&
d->size == cache->size && d->line_size == cache->line_size &&
d->associativity == cache->associativity) {
return i;
}
}
return CACHE_DESCRIPTOR_UNAVAILABLE;
}
/* CPUID Leaf 4 constants: */
/* EAX: */
#define CACHE_TYPE_D 1
#define CACHE_TYPE_I 2
#define CACHE_TYPE_UNIFIED 3
#define CACHE_LEVEL(l) (l << 5)
#define CACHE_SELF_INIT_LEVEL (1 << 8)
/* EDX: */
#define CACHE_NO_INVD_SHARING (1 << 0)
#define CACHE_INCLUSIVE (1 << 1)
#define CACHE_COMPLEX_IDX (1 << 2)
/* Encode CacheType for CPUID[4].EAX */
#define CACHE_TYPE(t) (((t) == DATA_CACHE) ? CACHE_TYPE_D : \
((t) == INSTRUCTION_CACHE) ? CACHE_TYPE_I : \
((t) == UNIFIED_CACHE) ? CACHE_TYPE_UNIFIED : \
0 /* Invalid value */)
/* Encode cache info for CPUID[4] */
static void encode_cache_cpuid4(CPUCacheInfo *cache,
int num_apic_ids, int num_cores,
uint32_t *eax, uint32_t *ebx,
uint32_t *ecx, uint32_t *edx)
{
assert(cache->size == cache->line_size * cache->associativity *
cache->partitions * cache->sets);
assert(num_apic_ids > 0);
*eax = CACHE_TYPE(cache->type) |
CACHE_LEVEL(cache->level) |
(cache->self_init ? CACHE_SELF_INIT_LEVEL : 0) |
((num_cores - 1) << 26) |
((num_apic_ids - 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 = (cache->line_size - 1) |
((cache->partitions - 1) << 12) |
((cache->associativity - 1) << 22);
assert(cache->sets > 0);
*ecx = cache->sets - 1;
*edx = (cache->no_invd_sharing ? CACHE_NO_INVD_SHARING : 0) |
(cache->inclusive ? CACHE_INCLUSIVE : 0) |
(cache->complex_indexing ? CACHE_COMPLEX_IDX : 0);
}
/* Encode cache info for CPUID[0x80000005].ECX or CPUID[0x80000005].EDX */
static uint32_t encode_cache_cpuid80000005(CPUCacheInfo *cache)
{
assert(cache->size % 1024 == 0);
assert(cache->lines_per_tag > 0);
assert(cache->associativity > 0);
assert(cache->line_size > 0);
return ((cache->size / 1024) << 24) | (cache->associativity << 16) |
(cache->lines_per_tag << 8) | (cache->line_size);
}
#define ASSOC_FULL 0xFF
/* AMD associativity encoding used on CPUID Leaf 0x80000006: */
#define AMD_ENC_ASSOC(a) (a <= 1 ? a : \
a == 2 ? 0x2 : \
a == 4 ? 0x4 : \
a == 8 ? 0x6 : \
a == 16 ? 0x8 : \
a == 32 ? 0xA : \
a == 48 ? 0xB : \
a == 64 ? 0xC : \
a == 96 ? 0xD : \
a == 128 ? 0xE : \
a == ASSOC_FULL ? 0xF : \
0 /* invalid value */)
/*
* Encode cache info for CPUID[0x80000006].ECX and CPUID[0x80000006].EDX
* @l3 can be NULL.
*/
static void encode_cache_cpuid80000006(CPUCacheInfo *l2,
CPUCacheInfo *l3,
uint32_t *ecx, uint32_t *edx)
{
assert(l2->size % 1024 == 0);
assert(l2->associativity > 0);
assert(l2->lines_per_tag > 0);
assert(l2->line_size > 0);
*ecx = ((l2->size / 1024) << 16) |
(AMD_ENC_ASSOC(l2->associativity) << 12) |
(l2->lines_per_tag << 8) | (l2->line_size);
if (l3) {
assert(l3->size % (512 * 1024) == 0);
assert(l3->associativity > 0);
assert(l3->lines_per_tag > 0);
assert(l3->line_size > 0);
*edx = ((l3->size / (512 * 1024)) << 18) |
(AMD_ENC_ASSOC(l3->associativity) << 12) |
(l3->lines_per_tag << 8) | (l3->line_size);
} else {
*edx = 0;
}
}
/*
* Definitions used for building CPUID Leaf 0x8000001D and 0x8000001E
* Please refer to the AMD64 Architecture Programmer’s Manual Volume 3.
* Define the constants to build the cpu topology. Right now, TOPOEXT
* feature is enabled only on EPYC. So, these constants are based on
* EPYC supported configurations. We may need to handle the cases if
* these values change in future.
*/
/* Maximum core complexes in a node */
#define MAX_CCX 2
/* Maximum cores in a core complex */
#define MAX_CORES_IN_CCX 4
/* Maximum cores in a node */
#define MAX_CORES_IN_NODE 8
/* Maximum nodes in a socket */
#define MAX_NODES_PER_SOCKET 4
/*
* Figure out the number of nodes required to build this config.
* Max cores in a node is 8
*/
static int nodes_in_socket(int nr_cores)
{
int nodes;
nodes = DIV_ROUND_UP(nr_cores, MAX_CORES_IN_NODE);
/* Hardware does not support config with 3 nodes, return 4 in that case */
return (nodes == 3) ? 4 : nodes;
}
/*
* Decide the number of cores in a core complex with the given nr_cores using
* following set constants MAX_CCX, MAX_CORES_IN_CCX, MAX_CORES_IN_NODE and
* MAX_NODES_PER_SOCKET. Maintain symmetry as much as possible
* L3 cache is shared across all cores in a core complex. So, this will also
* tell us how many cores are sharing the L3 cache.
*/
static int cores_in_core_complex(int nr_cores)
{
int nodes;
/* Check if we can fit all the cores in one core complex */
if (nr_cores <= MAX_CORES_IN_CCX) {
return nr_cores;
}
/* Get the number of nodes required to build this config */
nodes = nodes_in_socket(nr_cores);
/*
* Divide the cores accros all the core complexes
* Return rounded up value
*/
return DIV_ROUND_UP(nr_cores, nodes * MAX_CCX);
}
/* Encode cache info for CPUID[8000001D] */
static void encode_cache_cpuid8000001d(CPUCacheInfo *cache, CPUState *cs,
uint32_t *eax, uint32_t *ebx,
uint32_t *ecx, uint32_t *edx)
{
uint32_t l3_cores;
assert(cache->size == cache->line_size * cache->associativity *
cache->partitions * cache->sets);
*eax = 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 == 3) {
l3_cores = cores_in_core_complex(cs->nr_cores);
*eax |= ((l3_cores * cs->nr_threads) - 1) << 14;
} else {
*eax |= ((cs->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 = (cache->line_size - 1) |
((cache->partitions - 1) << 12) |
((cache->associativity - 1) << 22);
assert(cache->sets > 0);
*ecx = cache->sets - 1;
*edx = (cache->no_invd_sharing ? CACHE_NO_INVD_SHARING : 0) |
(cache->inclusive ? CACHE_INCLUSIVE : 0) |
(cache->complex_indexing ? CACHE_COMPLEX_IDX : 0);
}
/* Data structure to hold the configuration info for a given core index */
struct core_topology {
/* core complex id of the current core index */
int ccx_id;
/*
* Adjusted core index for this core in the topology
* This can be 0,1,2,3 with max 4 cores in a core complex
*/
int core_id;
/* Node id for this core index */
int node_id;
/* Number of nodes in this config */
int num_nodes;
};
/*
* Build the configuration closely match the EPYC hardware. Using the EPYC
* hardware configuration values (MAX_CCX, MAX_CORES_IN_CCX, MAX_CORES_IN_NODE)
* right now. This could change in future.
* nr_cores : Total number of cores in the config
* core_id : Core index of the current CPU
* topo : Data structure to hold all the config info for this core index
*/
static void build_core_topology(int nr_cores, int core_id,
struct core_topology *topo)
{
int nodes, cores_in_ccx;
/* First get the number of nodes required */
nodes = nodes_in_socket(nr_cores);
cores_in_ccx = cores_in_core_complex(nr_cores);
topo->node_id = core_id / (cores_in_ccx * MAX_CCX);
topo->ccx_id = (core_id % (cores_in_ccx * MAX_CCX)) / cores_in_ccx;
topo->core_id = core_id % cores_in_ccx;
topo->num_nodes = nodes;
}
/* Encode cache info for CPUID[8000001E] */
static void encode_topo_cpuid8000001e(CPUState *cs, X86CPU *cpu,
uint32_t *eax, uint32_t *ebx,
uint32_t *ecx, uint32_t *edx)
{
struct core_topology topo = {0};
unsigned long nodes;
int shift;
build_core_topology(cs->nr_cores, cpu->core_id, &topo);
*eax = cpu->apic_id;
/*
* CPUID_Fn8000001E_EBX
* 31:16 Reserved
* 15:8 Threads per core (The number of threads per core is
* Threads per core + 1)
* 7:0 Core id (see bit decoding below)
* SMT:
* 4:3 node id
* 2 Core complex id
* 1:0 Core id
* Non SMT:
* 5:4 node id
* 3 Core complex id
* 1:0 Core id
*/
if (cs->nr_threads - 1) {
*ebx = ((cs->nr_threads - 1) << 8) | (topo.node_id << 3) |
(topo.ccx_id << 2) | topo.core_id;
} else {
*ebx = (topo.node_id << 4) | (topo.ccx_id << 3) | topo.core_id;
}
/*
* CPUID_Fn8000001E_ECX
* 31:11 Reserved
* 10:8 Nodes per processor (Nodes per processor is number of nodes + 1)
* 7:0 Node id (see bit decoding below)
* 2 Socket id
* 1:0 Node id
*/
if (topo.num_nodes <= 4) {
*ecx = ((topo.num_nodes - 1) << 8) | (cpu->socket_id << 2) |
topo.node_id;
} else {
/*
* Node id fix up. Actual hardware supports up to 4 nodes. But with
* more than 32 cores, we may end up with more than 4 nodes.
* Node id is a combination of socket id and node id. Only requirement
* here is that this number should be unique accross the system.
* Shift the socket id to accommodate more nodes. We dont expect both
* socket id and node id to be big number at the same time. This is not
* an ideal config but we need to to support it. Max nodes we can have
* is 32 (255/8) with 8 cores per node and 255 max cores. We only need
* 5 bits for nodes. Find the left most set bit to represent the total
* number of nodes. find_last_bit returns last set bit(0 based). Left
* shift(+1) the socket id to represent all the nodes.
*/
nodes = topo.num_nodes - 1;
shift = find_last_bit(&nodes, 8);
*ecx = ((topo.num_nodes - 1) << 8) | (cpu->socket_id << (shift + 1)) |
topo.node_id;
}
*edx = 0;
}
/*
* Definitions of the hardcoded cache entries we expose:
* These are legacy cache values. If there is a need to change any
* of these values please use builtin_x86_defs
*/
/* L1 data cache: */
static CPUCacheInfo legacy_l1d_cache = {
.type = DATA_CACHE,
.level = 1,
.size = 32 * KiB,
.self_init = 1,
.line_size = 64,
.associativity = 8,
.sets = 64,
.partitions = 1,
.no_invd_sharing = true,
};
/*FIXME: CPUID leaf 0x80000005 is inconsistent with leaves 2 & 4 */
static CPUCacheInfo legacy_l1d_cache_amd = {
.type = DATA_CACHE,
.level = 1,
.size = 64 * KiB,
.self_init = 1,
.line_size = 64,
.associativity = 2,
.sets = 512,
.partitions = 1,
.lines_per_tag = 1,
.no_invd_sharing = true,
};
/* L1 instruction cache: */
static CPUCacheInfo legacy_l1i_cache = {
.type = INSTRUCTION_CACHE,
.level = 1,
.size = 32 * KiB,
.self_init = 1,
.line_size = 64,
.associativity = 8,
.sets = 64,
.partitions = 1,
.no_invd_sharing = true,
};
/*FIXME: CPUID leaf 0x80000005 is inconsistent with leaves 2 & 4 */
static CPUCacheInfo legacy_l1i_cache_amd = {
.type = INSTRUCTION_CACHE,
.level = 1,
.size = 64 * KiB,
.self_init = 1,
.line_size = 64,
.associativity = 2,
.sets = 512,
.partitions = 1,
.lines_per_tag = 1,
.no_invd_sharing = true,
};
/* Level 2 unified cache: */
static CPUCacheInfo legacy_l2_cache = {
.type = UNIFIED_CACHE,
.level = 2,
.size = 4 * MiB,
.self_init = 1,
.line_size = 64,
.associativity = 16,
.sets = 4096,
.partitions = 1,
.no_invd_sharing = true,
};
/*FIXME: CPUID leaf 2 descriptor is inconsistent with CPUID leaf 4 */
static CPUCacheInfo legacy_l2_cache_cpuid2 = {
.type = UNIFIED_CACHE,
.level = 2,
.size = 2 * MiB,
.line_size = 64,
.associativity = 8,
};
/*FIXME: CPUID leaf 0x80000006 is inconsistent with leaves 2 & 4 */
static CPUCacheInfo legacy_l2_cache_amd = {
.type = UNIFIED_CACHE,
.level = 2,
.size = 512 * KiB,
.line_size = 64,
.lines_per_tag = 1,
.associativity = 16,
.sets = 512,
.partitions = 1,
};
/* Level 3 unified cache: */
static CPUCacheInfo legacy_l3_cache = {
.type = UNIFIED_CACHE,
.level = 3,
.size = 16 * MiB,
.line_size = 64,
.associativity = 16,
.sets = 16384,
.partitions = 1,
.lines_per_tag = 1,
.self_init = true,
.inclusive = true,
.complex_indexing = true,
};
/* TLB definitions: */
#define L1_DTLB_2M_ASSOC 1
#define L1_DTLB_2M_ENTRIES 255
#define L1_DTLB_4K_ASSOC 1
#define L1_DTLB_4K_ENTRIES 255
#define L1_ITLB_2M_ASSOC 1
#define L1_ITLB_2M_ENTRIES 255
#define L1_ITLB_4K_ASSOC 1
#define L1_ITLB_4K_ENTRIES 255
#define L2_DTLB_2M_ASSOC 0 /* disabled */
#define L2_DTLB_2M_ENTRIES 0 /* disabled */
#define L2_DTLB_4K_ASSOC 4
#define L2_DTLB_4K_ENTRIES 512
#define L2_ITLB_2M_ASSOC 0 /* disabled */
#define L2_ITLB_2M_ENTRIES 0 /* disabled */
#define L2_ITLB_4K_ASSOC 4
#define L2_ITLB_4K_ENTRIES 512
/* CPUID Leaf 0x14 constants: */
#define INTEL_PT_MAX_SUBLEAF 0x1
/*
* bit[00]: IA32_RTIT_CTL.CR3 filter can be set to 1 and IA32_RTIT_CR3_MATCH
* MSR can be accessed;
* bit[01]: Support Configurable PSB and Cycle-Accurate Mode;
* bit[02]: Support IP Filtering, TraceStop filtering, and preservation
* of Intel PT MSRs across warm reset;
* bit[03]: Support MTC timing packet and suppression of COFI-based packets;
*/
#define INTEL_PT_MINIMAL_EBX 0xf
/*
* bit[00]: Tracing can be enabled with IA32_RTIT_CTL.ToPA = 1 and
* IA32_RTIT_OUTPUT_BASE and IA32_RTIT_OUTPUT_MASK_PTRS MSRs can be
* accessed;
* bit[01]: ToPA tables can hold any number of output entries, up to the
* maximum allowed by the MaskOrTableOffset field of
* IA32_RTIT_OUTPUT_MASK_PTRS;
* bit[02]: Support Single-Range Output scheme;
*/
#define INTEL_PT_MINIMAL_ECX 0x7
/* generated packets which contain IP payloads have LIP values */
#define INTEL_PT_IP_LIP (1 << 31)
#define INTEL_PT_ADDR_RANGES_NUM 0x2 /* Number of configurable address ranges */
#define INTEL_PT_ADDR_RANGES_NUM_MASK 0x3
#define INTEL_PT_MTC_BITMAP (0x0249 << 16) /* Support ART(0,3,6,9) */
#define INTEL_PT_CYCLE_BITMAP 0x1fff /* Support 0,2^(0~11) */
#define INTEL_PT_PSB_BITMAP (0x003f << 16) /* Support 2K,4K,8K,16K,32K,64K */
static void x86_cpu_vendor_words2str(char *dst, uint32_t vendor1,
uint32_t vendor2, uint32_t vendor3)
{
int i;
for (i = 0; i < 4; i++) {
dst[i] = vendor1 >> (8 * i);
dst[i + 4] = vendor2 >> (8 * i);
dst[i + 8] = vendor3 >> (8 * i);
}
dst[CPUID_VENDOR_SZ] = '\0';
}
#define I486_FEATURES (CPUID_FP87 | CPUID_VME | CPUID_PSE)
#define PENTIUM_FEATURES (I486_FEATURES | CPUID_DE | CPUID_TSC | \
CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_MMX | CPUID_APIC)
#define PENTIUM2_FEATURES (PENTIUM_FEATURES | CPUID_PAE | CPUID_SEP | \
CPUID_MTRR | CPUID_PGE | CPUID_MCA | CPUID_CMOV | CPUID_PAT | \
CPUID_PSE36 | CPUID_FXSR)
#define PENTIUM3_FEATURES (PENTIUM2_FEATURES | CPUID_SSE)
#define PPRO_FEATURES (CPUID_FP87 | CPUID_DE | CPUID_PSE | CPUID_TSC | \
CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_PGE | CPUID_CMOV | \
CPUID_PAT | CPUID_FXSR | CPUID_MMX | CPUID_SSE | CPUID_SSE2 | \
CPUID_PAE | CPUID_SEP | CPUID_APIC)
#define TCG_FEATURES (CPUID_FP87 | CPUID_PSE | CPUID_TSC | CPUID_MSR | \
CPUID_PAE | CPUID_MCE | CPUID_CX8 | CPUID_APIC | CPUID_SEP | \
CPUID_MTRR | CPUID_PGE | CPUID_MCA | CPUID_CMOV | CPUID_PAT | \
CPUID_PSE36 | CPUID_CLFLUSH | CPUID_ACPI | CPUID_MMX | \
CPUID_FXSR | CPUID_SSE | CPUID_SSE2 | CPUID_SS | CPUID_DE)
/* partly implemented:
CPUID_MTRR, CPUID_MCA, CPUID_CLFLUSH (needed for Win64) */
/* missing:
CPUID_VME, CPUID_DTS, CPUID_SS, CPUID_HT, CPUID_TM, CPUID_PBE */
#define TCG_EXT_FEATURES (CPUID_EXT_SSE3 | CPUID_EXT_PCLMULQDQ | \
CPUID_EXT_MONITOR | CPUID_EXT_SSSE3 | CPUID_EXT_CX16 | \
CPUID_EXT_SSE41 | CPUID_EXT_SSE42 | CPUID_EXT_POPCNT | \
CPUID_EXT_XSAVE | /* CPUID_EXT_OSXSAVE is dynamic */ \
CPUID_EXT_MOVBE | CPUID_EXT_AES | CPUID_EXT_HYPERVISOR | \
CPUID_EXT_RDRAND)
/* missing:
CPUID_EXT_DTES64, CPUID_EXT_DSCPL, CPUID_EXT_VMX, CPUID_EXT_SMX,
CPUID_EXT_EST, CPUID_EXT_TM2, CPUID_EXT_CID, CPUID_EXT_FMA,
CPUID_EXT_XTPR, CPUID_EXT_PDCM, CPUID_EXT_PCID, CPUID_EXT_DCA,
CPUID_EXT_X2APIC, CPUID_EXT_TSC_DEADLINE_TIMER, CPUID_EXT_AVX,
CPUID_EXT_F16C */
#ifdef TARGET_X86_64
#define TCG_EXT2_X86_64_FEATURES (CPUID_EXT2_SYSCALL | CPUID_EXT2_LM)
#else
#define TCG_EXT2_X86_64_FEATURES 0
#endif
#define TCG_EXT2_FEATURES ((TCG_FEATURES & CPUID_EXT2_AMD_ALIASES) | \
CPUID_EXT2_NX | CPUID_EXT2_MMXEXT | CPUID_EXT2_RDTSCP | \
CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT | CPUID_EXT2_PDPE1GB | \
TCG_EXT2_X86_64_FEATURES)
#define TCG_EXT3_FEATURES (CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM | \
CPUID_EXT3_CR8LEG | CPUID_EXT3_ABM | CPUID_EXT3_SSE4A)
#define TCG_EXT4_FEATURES 0
#define TCG_SVM_FEATURES CPUID_SVM_NPT
#define TCG_KVM_FEATURES 0
#define TCG_7_0_EBX_FEATURES (CPUID_7_0_EBX_SMEP | CPUID_7_0_EBX_SMAP | \
CPUID_7_0_EBX_BMI1 | CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ADX | \
CPUID_7_0_EBX_PCOMMIT | CPUID_7_0_EBX_CLFLUSHOPT | \
CPUID_7_0_EBX_CLWB | CPUID_7_0_EBX_MPX | CPUID_7_0_EBX_FSGSBASE | \
CPUID_7_0_EBX_ERMS)
/* missing:
CPUID_7_0_EBX_HLE, CPUID_7_0_EBX_AVX2,
CPUID_7_0_EBX_INVPCID, CPUID_7_0_EBX_RTM,
CPUID_7_0_EBX_RDSEED */
#define TCG_7_0_ECX_FEATURES (CPUID_7_0_ECX_PKU | \
/* CPUID_7_0_ECX_OSPKE is dynamic */ \
CPUID_7_0_ECX_LA57)
#define TCG_7_0_EDX_FEATURES 0
#define TCG_APM_FEATURES 0
#define TCG_6_EAX_FEATURES CPUID_6_EAX_ARAT
#define TCG_XSAVE_FEATURES (CPUID_XSAVE_XSAVEOPT | CPUID_XSAVE_XGETBV1)
/* missing:
CPUID_XSAVE_XSAVEC, CPUID_XSAVE_XSAVES */
typedef enum FeatureWordType {
CPUID_FEATURE_WORD,
MSR_FEATURE_WORD,
} FeatureWordType;
typedef struct FeatureWordInfo {
FeatureWordType type;
/* feature flags names are taken from "Intel Processor Identification and
* the CPUID Instruction" and AMD's "CPUID Specification".
* In cases of disagreement between feature naming conventions,
* aliases may be added.
*/
const char *feat_names[32];
union {
/* If type==CPUID_FEATURE_WORD */
struct {
uint32_t eax; /* Input EAX for CPUID */
bool needs_ecx; /* CPUID instruction uses ECX as input */
uint32_t ecx; /* Input ECX value for CPUID */
int reg; /* output register (R_* constant) */
} cpuid;
/* If type==MSR_FEATURE_WORD */
struct {
uint32_t index;
struct { /*CPUID that enumerate this MSR*/
FeatureWord cpuid_class;
uint32_t cpuid_flag;
} cpuid_dep;
} msr;
};
uint32_t tcg_features; /* Feature flags supported by TCG */
uint32_t unmigratable_flags; /* Feature flags known to be unmigratable */
uint32_t migratable_flags; /* Feature flags known to be migratable */
/* Features that shouldn't be auto-enabled by "-cpu host" */
uint32_t no_autoenable_flags;
} FeatureWordInfo;
static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
[FEAT_1_EDX] = {
.type = CPUID_FEATURE_WORD,
.feat_names = {
"fpu", "vme", "de", "pse",
"tsc", "msr", "pae", "mce",
"cx8", "apic", NULL, "sep",
"mtrr", "pge", "mca", "cmov",
"pat", "pse36", "pn" /* Intel psn */, "clflush" /* Intel clfsh */,
NULL, "ds" /* Intel dts */, "acpi", "mmx",
"fxsr", "sse", "sse2", "ss",
"ht" /* Intel htt */, "tm", "ia64", "pbe",
},
.cpuid = {.eax = 1, .reg = R_EDX, },
.tcg_features = TCG_FEATURES,
},
[FEAT_1_ECX] = {
.type = CPUID_FEATURE_WORD,
.feat_names = {
"pni" /* Intel,AMD sse3 */, "pclmulqdq", "dtes64", "monitor",
"ds-cpl", "vmx", "smx", "est",
"tm2", "ssse3", "cid", NULL,
"fma", "cx16", "xtpr", "pdcm",
NULL, "pcid", "dca", "sse4.1",
"sse4.2", "x2apic", "movbe", "popcnt",
"tsc-deadline", "aes", "xsave", NULL /* osxsave */,
"avx", "f16c", "rdrand", "hypervisor",
},
.cpuid = { .eax = 1, .reg = R_ECX, },
.tcg_features = TCG_EXT_FEATURES,
},
/* Feature names that are already defined on feature_name[] but
* are set on CPUID[8000_0001].EDX on AMD CPUs don't have their
* names on feat_names below. They are copied automatically
* to features[FEAT_8000_0001_EDX] if and only if CPU vendor is AMD.
*/
[FEAT_8000_0001_EDX] = {
.type = CPUID_FEATURE_WORD,
.feat_names = {
NULL /* fpu */, NULL /* vme */, NULL /* de */, NULL /* pse */,
NULL /* tsc */, NULL /* msr */, NULL /* pae */, NULL /* mce */,
NULL /* cx8 */, NULL /* apic */, NULL, "syscall",
NULL /* mtrr */, NULL /* pge */, NULL /* mca */, NULL /* cmov */,
NULL /* pat */, NULL /* pse36 */, NULL, NULL /* Linux mp */,
"nx", NULL, "mmxext", NULL /* mmx */,
NULL /* fxsr */, "fxsr-opt", "pdpe1gb", "rdtscp",
NULL, "lm", "3dnowext", "3dnow",
},
.cpuid = { .eax = 0x80000001, .reg = R_EDX, },
.tcg_features = TCG_EXT2_FEATURES,
},
[FEAT_8000_0001_ECX] = {
.type = CPUID_FEATURE_WORD,
.feat_names = {
"lahf-lm", "cmp-legacy", "svm", "extapic",
"cr8legacy", "abm", "sse4a", "misalignsse",
"3dnowprefetch", "osvw", "ibs", "xop",
"skinit", "wdt", NULL, "lwp",
"fma4", "tce", NULL, "nodeid-msr",
NULL, "tbm", "topoext", "perfctr-core",
"perfctr-nb", NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
},
.cpuid = { .eax = 0x80000001, .reg = R_ECX, },
.tcg_features = TCG_EXT3_FEATURES,
/*
* TOPOEXT is always allowed but can't be enabled blindly by
* "-cpu host", as it requires consistent cache topology info
* to be provided so it doesn't confuse guests.
*/
.no_autoenable_flags = CPUID_EXT3_TOPOEXT,
},
[FEAT_C000_0001_EDX] = {
.type = CPUID_FEATURE_WORD,
.feat_names = {
NULL, NULL, "xstore", "xstore-en",
NULL, NULL, "xcrypt", "xcrypt-en",
"ace2", "ace2-en", "phe", "phe-en",
"pmm", "pmm-en", NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
},
.cpuid = { .eax = 0xC0000001, .reg = R_EDX, },
.tcg_features = TCG_EXT4_FEATURES,
},
[FEAT_KVM] = {
.type = CPUID_FEATURE_WORD,
.feat_names = {
"kvmclock", "kvm-nopiodelay", "kvm-mmu", "kvmclock",
"kvm-asyncpf", "kvm-steal-time", "kvm-pv-eoi", "kvm-pv-unhalt",
NULL, "kvm-pv-tlb-flush", NULL, "kvm-pv-ipi",
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
"kvmclock-stable-bit", NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
},
.cpuid = { .eax = KVM_CPUID_FEATURES, .reg = R_EAX, },
.tcg_features = TCG_KVM_FEATURES,
},
[FEAT_KVM_HINTS] = {
.type = CPUID_FEATURE_WORD,
.feat_names = {
"kvm-hint-dedicated", NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
},
.cpuid = { .eax = KVM_CPUID_FEATURES, .reg = R_EDX, },
.tcg_features = TCG_KVM_FEATURES,
/*
* KVM hints aren't auto-enabled by -cpu host, they need to be
* explicitly enabled in the command-line.
*/
.no_autoenable_flags = ~0U,
},
/*
* .feat_names are commented out for Hyper-V enlightenments because we
* don't want to have two different ways for enabling them on QEMU command
* line. Some features (e.g. "hyperv_time", "hyperv_vapic", ...) require
* enabling several feature bits simultaneously, exposing these bits
* individually may just confuse guests.
*/
[FEAT_HYPERV_EAX] = {
.type = CPUID_FEATURE_WORD,
.feat_names = {
NULL /* hv_msr_vp_runtime_access */, NULL /* hv_msr_time_refcount_access */,
NULL /* hv_msr_synic_access */, NULL /* hv_msr_stimer_access */,
NULL /* hv_msr_apic_access */, NULL /* hv_msr_hypercall_access */,
NULL /* hv_vpindex_access */, NULL /* hv_msr_reset_access */,
NULL /* hv_msr_stats_access */, NULL /* hv_reftsc_access */,
NULL /* hv_msr_idle_access */, NULL /* hv_msr_frequency_access */,
NULL /* hv_msr_debug_access */, NULL /* hv_msr_reenlightenment_access */,
NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
},
.cpuid = { .eax = 0x40000003, .reg = R_EAX, },
},
[FEAT_HYPERV_EBX] = {
.type = CPUID_FEATURE_WORD,
.feat_names = {
NULL /* hv_create_partitions */, NULL /* hv_access_partition_id */,
NULL /* hv_access_memory_pool */, NULL /* hv_adjust_message_buffers */,
NULL /* hv_post_messages */, NULL /* hv_signal_events */,
NULL /* hv_create_port */, NULL /* hv_connect_port */,
NULL /* hv_access_stats */, NULL, NULL, NULL /* hv_debugging */,
NULL /* hv_cpu_power_management */, NULL /* hv_configure_profiler */,
NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
},
.cpuid = { .eax = 0x40000003, .reg = R_EBX, },
},
[FEAT_HYPERV_EDX] = {
.type = CPUID_FEATURE_WORD,
.feat_names = {
NULL /* hv_mwait */, NULL /* hv_guest_debugging */,
NULL /* hv_perf_monitor */, NULL /* hv_cpu_dynamic_part */,
NULL /* hv_hypercall_params_xmm */, NULL /* hv_guest_idle_state */,
NULL, NULL,
NULL, NULL, NULL /* hv_guest_crash_msr */, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
},
.cpuid = { .eax = 0x40000003, .reg = R_EDX, },
},
[FEAT_HV_RECOMM_EAX] = {
.type = CPUID_FEATURE_WORD,
.feat_names = {
NULL /* hv_recommend_pv_as_switch */,
NULL /* hv_recommend_pv_tlbflush_local */,
NULL /* hv_recommend_pv_tlbflush_remote */,