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cpu_x86: Store virCPUx86DataItem content in union

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The structure can only be used for CPUID data now. Adding a type
indicator and moving the data into a union will let us store alternative
data types.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Jiri Denemark 2019-03-14 15:44:27 +01:00
parent 10b80165db
commit 370177e2f6
4 changed files with 160 additions and 58 deletions
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202
src/cpu/cpu_x86.c
View File

@ -55,7 +55,9 @@ struct _virCPUx86Feature {
};
#define CPUID(...) { .cpuid = {__VA_ARGS__} }
#define CPUID(...) \
{ .type = VIR_CPU_X86_DATA_CPUID, \
.data = { .cpuid = {__VA_ARGS__} } }
#define KVM_FEATURE_DEF(Name, Eax_in, Eax) \
static virCPUx86DataItem Name ## _data[] = { \
@ -195,10 +197,22 @@ static bool
virCPUx86DataItemMatch(const virCPUx86DataItem *item1,
const virCPUx86DataItem *item2)
{
return (item1->cpuid.eax == item2->cpuid.eax &&
item1->cpuid.ebx == item2->cpuid.ebx &&
item1->cpuid.ecx == item2->cpuid.ecx &&
item1->cpuid.edx == item2->cpuid.edx);
const virCPUx86CPUID *cpuid1;
const virCPUx86CPUID *cpuid2;
switch (item1->type) {
case VIR_CPU_X86_DATA_CPUID:
cpuid1 = &item1->data.cpuid;
cpuid2 = &item2->data.cpuid;
return (cpuid1->eax == cpuid2->eax &&
cpuid1->ebx == cpuid2->ebx &&
cpuid1->ecx == cpuid2->ecx &&
cpuid1->edx == cpuid2->edx);
case VIR_CPU_X86_DATA_NONE:
default:
return false;
}
}
@ -206,10 +220,22 @@ static bool
virCPUx86DataItemMatchMasked(const virCPUx86DataItem *item,
const virCPUx86DataItem *mask)
{
return ((item->cpuid.eax & mask->cpuid.eax) == mask->cpuid.eax &&
(item->cpuid.ebx & mask->cpuid.ebx) == mask->cpuid.ebx &&
(item->cpuid.ecx & mask->cpuid.ecx) == mask->cpuid.ecx &&
(item->cpuid.edx & mask->cpuid.edx) == mask->cpuid.edx);
const virCPUx86CPUID *cpuid;
const virCPUx86CPUID *cpuidMask;
switch (item->type) {
case VIR_CPU_X86_DATA_CPUID:
cpuid = &item->data.cpuid;
cpuidMask = &mask->data.cpuid;
return ((cpuid->eax & cpuidMask->eax) == cpuidMask->eax &&
(cpuid->ebx & cpuidMask->ebx) == cpuidMask->ebx &&
(cpuid->ecx & cpuidMask->ecx) == cpuidMask->ecx &&
(cpuid->edx & cpuidMask->edx) == cpuidMask->edx);
case VIR_CPU_X86_DATA_NONE:
default:
return false;
}
}
@ -217,13 +243,26 @@ static void
virCPUx86DataItemSetBits(virCPUx86DataItemPtr item,
const virCPUx86DataItem *mask)
{
virCPUx86CPUIDPtr cpuid;
const virCPUx86CPUID *cpuidMask;
if (!mask)
return;
item->cpuid.eax |= mask->cpuid.eax;
item->cpuid.ebx |= mask->cpuid.ebx;
item->cpuid.ecx |= mask->cpuid.ecx;
item->cpuid.edx |= mask->cpuid.edx;
switch (item->type) {
case VIR_CPU_X86_DATA_CPUID:
cpuid = &item->data.cpuid;
cpuidMask = &mask->data.cpuid;
cpuid->eax |= cpuidMask->eax;
cpuid->ebx |= cpuidMask->ebx;
cpuid->ecx |= cpuidMask->ecx;
cpuid->edx |= cpuidMask->edx;
break;
case VIR_CPU_X86_DATA_NONE:
default:
break;
}
}
@ -231,13 +270,26 @@ static void
virCPUx86DataItemClearBits(virCPUx86DataItemPtr item,
const virCPUx86DataItem *mask)
{
virCPUx86CPUIDPtr cpuid;
const virCPUx86CPUID *cpuidMask;
if (!mask)
return;
item->cpuid.eax &= ~mask->cpuid.eax;
item->cpuid.ebx &= ~mask->cpuid.ebx;
item->cpuid.ecx &= ~mask->cpuid.ecx;
item->cpuid.edx &= ~mask->cpuid.edx;
switch (item->type) {
case VIR_CPU_X86_DATA_CPUID:
cpuid = &item->data.cpuid;
cpuidMask = &mask->data.cpuid;
cpuid->eax &= ~cpuidMask->eax;
cpuid->ebx &= ~cpuidMask->ebx;
cpuid->ecx &= ~cpuidMask->ecx;
cpuid->edx &= ~cpuidMask->edx;
break;
case VIR_CPU_X86_DATA_NONE:
default:
break;
}
}
@ -245,13 +297,26 @@ static void
virCPUx86DataItemAndBits(virCPUx86DataItemPtr item,
const virCPUx86DataItem *mask)
{
virCPUx86CPUIDPtr cpuid;
const virCPUx86CPUID *cpuidMask;
if (!mask)
return;
item->cpuid.eax &= mask->cpuid.eax;
item->cpuid.ebx &= mask->cpuid.ebx;
item->cpuid.ecx &= mask->cpuid.ecx;
item->cpuid.edx &= mask->cpuid.edx;
switch (item->type) {
case VIR_CPU_X86_DATA_CPUID:
cpuid = &item->data.cpuid;
cpuidMask = &mask->data.cpuid;
cpuid->eax &= cpuidMask->eax;
cpuid->ebx &= cpuidMask->ebx;
cpuid->ecx &= cpuidMask->ecx;
cpuid->edx &= cpuidMask->edx;
break;
case VIR_CPU_X86_DATA_NONE:
default:
break;
}
}
@ -291,15 +356,29 @@ virCPUx86DataSorter(const void *a, const void *b)
virCPUx86DataItemPtr da = (virCPUx86DataItemPtr) a;
virCPUx86DataItemPtr db = (virCPUx86DataItemPtr) b;
if (da->cpuid.eax_in > db->cpuid.eax_in)
if (da->type > db->type)
return 1;
else if (da->cpuid.eax_in < db->cpuid.eax_in)
else if (da->type < db->type)
return -1;
if (da->cpuid.ecx_in > db->cpuid.ecx_in)
return 1;
else if (da->cpuid.ecx_in < db->cpuid.ecx_in)
return -1;
switch (da->type) {
case VIR_CPU_X86_DATA_CPUID:
if (da->data.cpuid.eax_in > db->data.cpuid.eax_in)
return 1;
else if (da->data.cpuid.eax_in < db->data.cpuid.eax_in)
return -1;
if (da->data.cpuid.ecx_in > db->data.cpuid.ecx_in)
return 1;
else if (da->data.cpuid.ecx_in < db->data.cpuid.ecx_in)
return -1;
break;
case VIR_CPU_X86_DATA_NONE:
default:
break;
}
return 0;
}
@ -527,9 +606,9 @@ x86DataToVendor(const virCPUx86Data *data,
static int
virCPUx86VendorToData(const char *vendor,
virCPUx86DataItemPtr data)
virCPUx86DataItemPtr item)
{
virCPUx86CPUIDPtr cpuid = &data->cpuid;
virCPUx86CPUIDPtr cpuid;
if (strlen(vendor) != VENDOR_STRING_LENGTH) {
virReportError(VIR_ERR_INTERNAL_ERROR,
@ -537,6 +616,8 @@ virCPUx86VendorToData(const char *vendor,
return -1;
}
item->type = VIR_CPU_X86_DATA_CPUID;
cpuid = &item->data.cpuid;
cpuid->eax_in = 0;
cpuid->ecx_in = 0;
cpuid->ebx = virReadBufInt32LE(vendor);
@ -612,7 +693,7 @@ x86DataToSignatureFull(const virCPUx86Data *data,
if (!(item = virCPUx86DataGet(data, &leaf1)))
return;
cpuid = &item->cpuid;
cpuid = &item->data.cpuid;
*family = ((cpuid->eax >> 20) & 0xff) + ((cpuid->eax >> 8) & 0xf);
*model = ((cpuid->eax >> 12) & 0xf0) + ((cpuid->eax >> 4) & 0xf);
*stepping = cpuid->eax & 0xf;
@ -631,7 +712,7 @@ x86DataToSignature(const virCPUx86Data *data)
if (!(item = virCPUx86DataGet(data, &leaf1)))
return 0;
return item->cpuid.eax & SIGNATURE_MASK;
return item->data.cpuid.eax & SIGNATURE_MASK;
}
@ -886,7 +967,8 @@ x86ParseCPUID(xmlXPathContextPtr ctxt,
ret_eax == -2 || ret_ebx == -2 || ret_ecx == -2 || ret_edx == -2)
return -1;
cpuid = &item->cpuid;
item->type = VIR_CPU_X86_DATA_CPUID;
cpuid = &item->data.cpuid;
cpuid->eax_in = eax_in;
cpuid->ecx_in = ecx_in;
cpuid->eax = eax;
@ -1462,13 +1544,23 @@ virCPUx86DataFormat(const virCPUData *data)
virBufferAddLit(&buf, "<cpudata arch='x86'>\n");
while ((item = virCPUx86DataNext(&iter))) {
virCPUx86CPUIDPtr cpuid = &item->cpuid;
virBufferAsprintf(&buf,
" <cpuid eax_in='0x%08x' ecx_in='0x%08x'"
" eax='0x%08x' ebx='0x%08x'"
" ecx='0x%08x' edx='0x%08x'/>\n",
cpuid->eax_in, cpuid->ecx_in,
cpuid->eax, cpuid->ebx, cpuid->ecx, cpuid->edx);
virCPUx86CPUIDPtr cpuid;
switch (item->type) {
case VIR_CPU_X86_DATA_CPUID:
cpuid = &item->data.cpuid;
virBufferAsprintf(&buf,
" <cpuid eax_in='0x%08x' ecx_in='0x%08x'"
" eax='0x%08x' ebx='0x%08x'"
" ecx='0x%08x' edx='0x%08x'/>\n",
cpuid->eax_in, cpuid->ecx_in,
cpuid->eax, cpuid->ebx, cpuid->ecx, cpuid->edx);
break;
case VIR_CPU_X86_DATA_NONE:
default:
break;
}
}
virBufferAddLit(&buf, "</cpudata>\n");
@ -2227,7 +2319,7 @@ cpuidSetLeaf4(virCPUDataPtr data,
virCPUx86DataItemPtr subLeaf0)
{
virCPUx86DataItem item = *subLeaf0;
virCPUx86CPUIDPtr cpuid = &item.cpuid;
virCPUx86CPUIDPtr cpuid = &item.data.cpuid;
if (virCPUx86DataAdd(data, subLeaf0) < 0)
return -1;
@ -2251,13 +2343,13 @@ cpuidSetLeaf7(virCPUDataPtr data,
virCPUx86DataItemPtr subLeaf0)
{
virCPUx86DataItem item = CPUID(.eax_in = 0x7);
virCPUx86CPUIDPtr cpuid = &item.cpuid;
virCPUx86CPUIDPtr cpuid = &item.data.cpuid;
uint32_t sub;
if (virCPUx86DataAdd(data, subLeaf0) < 0)
return -1;
for (sub = 1; sub <= subLeaf0->cpuid.eax; sub++) {
for (sub = 1; sub <= subLeaf0->data.cpuid.eax; sub++) {
cpuid->ecx_in = sub;
cpuidCall(cpuid);
if (virCPUx86DataAdd(data, &item) < 0)
@ -2279,7 +2371,7 @@ cpuidSetLeafB(virCPUDataPtr data,
virCPUx86DataItemPtr subLeaf0)
{
virCPUx86DataItem item = *subLeaf0;
virCPUx86CPUIDPtr cpuid = &item.cpuid;
virCPUx86CPUIDPtr cpuid = &item.data.cpuid;
while (cpuid->ecx & 0xff00) {
if (virCPUx86DataAdd(data, &item) < 0)
@ -2304,7 +2396,7 @@ cpuidSetLeafD(virCPUDataPtr data,
virCPUx86DataItemPtr subLeaf0)
{
virCPUx86DataItem item = CPUID(.eax_in = 0xd);
virCPUx86CPUIDPtr cpuid = &item.cpuid;
virCPUx86CPUIDPtr cpuid = &item.data.cpuid;
virCPUx86CPUID sub0;
virCPUx86CPUID sub1;
uint32_t sub;
@ -2317,7 +2409,7 @@ cpuidSetLeafD(virCPUDataPtr data,
if (virCPUx86DataAdd(data, &item) < 0)
return -1;
sub0 = subLeaf0->cpuid;
sub0 = subLeaf0->data.cpuid;
sub1 = *cpuid;
for (sub = 2; sub < 64; sub++) {
if (sub < 32 &&
@ -2352,8 +2444,8 @@ cpuidSetLeafResID(virCPUDataPtr data,
virCPUx86DataItemPtr subLeaf0,
uint32_t res)
{
virCPUx86DataItem item = CPUID(.eax_in = subLeaf0->cpuid.eax_in);
virCPUx86CPUIDPtr cpuid = &item.cpuid;
virCPUx86DataItem item = CPUID(.eax_in = subLeaf0->data.cpuid.eax_in);
virCPUx86CPUIDPtr cpuid = &item.data.cpuid;
uint32_t sub;
if (virCPUx86DataAdd(data, subLeaf0) < 0)
@ -2381,11 +2473,11 @@ cpuidSetLeaf12(virCPUDataPtr data,
virCPUx86DataItemPtr subLeaf0)
{
virCPUx86DataItem item = CPUID(.eax_in = 0x7);
virCPUx86CPUIDPtr cpuid = &item.cpuid;
virCPUx86CPUIDPtr cpuid = &item.data.cpuid;
virCPUx86DataItemPtr leaf7;
if (!(leaf7 = virCPUx86DataGet(&data->data.x86, &item)) ||
!(leaf7->cpuid.ebx & (1 << 2)))
!(leaf7->data.cpuid.ebx & (1 << 2)))
return 0;
if (virCPUx86DataAdd(data, subLeaf0) < 0)
@ -2418,13 +2510,13 @@ cpuidSetLeaf14(virCPUDataPtr data,
virCPUx86DataItemPtr subLeaf0)
{
virCPUx86DataItem item = CPUID(.eax_in = 0x14);
virCPUx86CPUIDPtr cpuid = &item.cpuid;
virCPUx86CPUIDPtr cpuid = &item.data.cpuid;
uint32_t sub;
if (virCPUx86DataAdd(data, subLeaf0) < 0)
return -1;
for (sub = 1; sub <= subLeaf0->cpuid.eax; sub++) {
for (sub = 1; sub <= subLeaf0->data.cpuid.eax; sub++) {
cpuid->ecx_in = sub;
cpuidCall(cpuid);
if (virCPUx86DataAdd(data, &item) < 0)
@ -2444,16 +2536,16 @@ cpuidSetLeaf17(virCPUDataPtr data,
virCPUx86DataItemPtr subLeaf0)
{
virCPUx86DataItem item = CPUID(.eax_in = 0x17);
virCPUx86CPUIDPtr cpuid = &item.cpuid;
virCPUx86CPUIDPtr cpuid = &item.data.cpuid;
uint32_t sub;
if (subLeaf0->cpuid.eax < 3)
if (subLeaf0->data.cpuid.eax < 3)
return 0;
if (virCPUx86DataAdd(data, subLeaf0) < 0)
return -1;
for (sub = 1; sub <= subLeaf0->cpuid.eax; sub++) {
for (sub = 1; sub <= subLeaf0->data.cpuid.eax; sub++) {
cpuid->ecx_in = sub;
cpuidCall(cpuid);
if (virCPUx86DataAdd(data, &item) < 0)
@ -2470,7 +2562,7 @@ cpuidSet(uint32_t base, virCPUDataPtr data)
uint32_t max;
uint32_t leaf;
virCPUx86DataItem item = CPUID(.eax_in = base);
virCPUx86CPUIDPtr cpuid = &item.cpuid;
virCPUx86CPUIDPtr cpuid = &item.data.cpuid;
cpuidCall(cpuid);
max = cpuid->eax;

10
src/cpu/cpu_x86_data.h
View File

@ -69,10 +69,18 @@ struct _virCPUx86CPUID {
# define VIR_CPU_X86_DATA_INIT { 0 }
typedef enum {
VIR_CPU_X86_DATA_NONE = 0,
VIR_CPU_X86_DATA_CPUID,
} virCPUx86DataType;
typedef struct _virCPUx86DataItem virCPUx86DataItem;
typedef virCPUx86DataItem *virCPUx86DataItemPtr;
struct _virCPUx86DataItem {
virCPUx86CPUID cpuid;
virCPUx86DataType type;
union {
virCPUx86CPUID cpuid;
} data;
};
typedef struct _virCPUx86Data virCPUx86Data;

3
src/libxl/libxl_capabilities.c
View File

@ -69,8 +69,9 @@ libxlCapsAddCPUID(virCPUDataPtr data, virCPUx86CPUID *cpuid, ssize_t ncaps)
virCPUx86DataItem item = { 0 };
size_t i;
item.type = VIR_CPU_X86_DATA_CPUID;
for (i = 0; i < ncaps; i++) {
item.cpuid = cpuid[i];
item.data.cpuid = cpuid[i];
if (virCPUx86DataAdd(data, &item) < 0) {
VIR_DEBUG("Failed to add CPUID(%x,%x)",

3
src/qemu/qemu_monitor_json.c
View File

@ -7195,9 +7195,10 @@ qemuMonitorJSONParseCPUx86Features(virJSONValuePtr data)
if (!(cpudata = virCPUDataNew(VIR_ARCH_X86_64)))
goto error;
item.type = VIR_CPU_X86_DATA_CPUID;
for (i = 0; i < virJSONValueArraySize(data); i++) {
if (qemuMonitorJSONParseCPUx86FeatureWord(virJSONValueArrayGet(data, i),
&item.cpuid) < 0 ||
&item.data.cpuid) < 0 ||
virCPUx86DataAdd(cpudata, &item) < 0)
goto error;
}