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https://gitlab.com/libvirt/libvirt.git
synced 2024-07-03 16:42:37 +00:00
cpu_x86: Prepare for ecx_in CPUID parameter
CPUID instruction normally takes its parameter from EAX, but sometimes ECX is used as an additional parameter. This patch prepares the x86 CPU driver code for the new 'ecx_in' CPUID parameter. Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
This commit is contained in:
Jiri Denemark
parent
7b7cc3aaec
commit
f0fd7ae122
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@ -40,7 +40,7 @@ VIR_LOG_INIT("cpu.cpu_x86");
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#define VENDOR_STRING_LENGTH 12
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static const virCPUx86CPUID cpuidNull = { 0, 0, 0, 0, 0 };
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static const virCPUx86CPUID cpuidNull = { 0 };
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static const virArch archs[] = { VIR_ARCH_I686, VIR_ARCH_X86_64 };
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@ -250,6 +250,11 @@ virCPUx86CPUIDSorter(const void *a, const void *b)
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else if (da->eax_in < db->eax_in)
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return -1;
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if (da->ecx_in > db->ecx_in)
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return 1;
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else if (da->ecx_in < db->ecx_in)
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return -1;
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return 0;
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}
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@ -274,12 +279,13 @@ x86DataCpuidNext(virCPUx86DataIteratorPtr iterator)
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static virCPUx86CPUID *
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x86DataCpuid(const virCPUx86Data *data,
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uint32_t eax_in)
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const virCPUx86CPUID *cpuid)
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{
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size_t i;
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for (i = 0; i < data->len; i++) {
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if (data->data[i].eax_in == eax_in)
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if (data->data[i].eax_in == cpuid->eax_in &&
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data->data[i].ecx_in == cpuid->ecx_in)
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return data->data + i;
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}
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@ -345,7 +351,7 @@ virCPUx86DataAddCPUID(virCPUx86Data *data,
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{
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virCPUx86CPUID *existing;
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if ((existing = x86DataCpuid(data, cpuid->eax_in))) {
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if ((existing = x86DataCpuid(data, cpuid))) {
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x86cpuidSetBits(existing, cpuid);
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} else {
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if (VIR_APPEND_ELEMENT_COPY(data->data, data->len,
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@ -369,7 +375,7 @@ x86DataAdd(virCPUx86Data *data1,
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virCPUx86CPUID *cpuid2;
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while ((cpuid2 = x86DataCpuidNext(&iter))) {
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cpuid1 = x86DataCpuid(data1, cpuid2->eax_in);
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cpuid1 = x86DataCpuid(data1, cpuid2);
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if (cpuid1) {
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x86cpuidSetBits(cpuid1, cpuid2);
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@ -392,7 +398,7 @@ x86DataSubtract(virCPUx86Data *data1,
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virCPUx86CPUID *cpuid2;
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while ((cpuid1 = x86DataCpuidNext(&iter))) {
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cpuid2 = x86DataCpuid(data2, cpuid1->eax_in);
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cpuid2 = x86DataCpuid(data2, cpuid1);
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x86cpuidClearBits(cpuid1, cpuid2);
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}
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}
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@ -407,7 +413,7 @@ x86DataIntersect(virCPUx86Data *data1,
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virCPUx86CPUID *cpuid2;
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while ((cpuid1 = x86DataCpuidNext(&iter))) {
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cpuid2 = x86DataCpuid(data2, cpuid1->eax_in);
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cpuid2 = x86DataCpuid(data2, cpuid1);
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if (cpuid2)
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x86cpuidAndBits(cpuid1, cpuid2);
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else
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@ -435,7 +441,7 @@ x86DataIsSubset(const virCPUx86Data *data,
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const virCPUx86CPUID *cpuidSubset;
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while ((cpuidSubset = x86DataCpuidNext(&iter))) {
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if (!(cpuid = x86DataCpuid(data, cpuidSubset->eax_in)) ||
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if (!(cpuid = x86DataCpuid(data, cpuidSubset)) ||
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!x86cpuidMatchMasked(cpuid, cpuidSubset))
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return false;
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}
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@ -476,7 +482,7 @@ x86DataToVendor(const virCPUx86Data *data,
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for (i = 0; i < map->nvendors; i++) {
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virCPUx86VendorPtr vendor = map->vendors[i];
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if ((cpuid = x86DataCpuid(data, vendor->cpuid.eax_in)) &&
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if ((cpuid = x86DataCpuid(data, &vendor->cpuid)) &&
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x86cpuidMatchMasked(cpuid, &vendor->cpuid)) {
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x86cpuidClearBits(cpuid, &vendor->cpuid);
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return vendor;
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@ -592,6 +598,7 @@ x86VendorParse(xmlXPathContextPtr ctxt,
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}
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vendor->cpuid.eax_in = 0;
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vendor->cpuid.ecx_in = 0;
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vendor->cpuid.ebx = virReadBufInt32LE(string);
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vendor->cpuid.edx = virReadBufInt32LE(string + 4);
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vendor->cpuid.ecx = virReadBufInt32LE(string + 8);
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@ -715,25 +722,27 @@ static int
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x86ParseCPUID(xmlXPathContextPtr ctxt,
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virCPUx86CPUID *cpuid)
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{
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unsigned long eax_in;
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unsigned long eax_in, ecx_in;
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unsigned long eax, ebx, ecx, edx;
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int ret_eax_in, ret_eax, ret_ebx, ret_ecx, ret_edx;
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int ret_eax_in, ret_ecx_in, ret_eax, ret_ebx, ret_ecx, ret_edx;
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memset(cpuid, 0, sizeof(*cpuid));
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eax_in = 0;
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eax_in = ecx_in = 0;
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eax = ebx = ecx = edx = 0;
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ret_eax_in = virXPathULongHex("string(@eax_in)", ctxt, &eax_in);
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ret_ecx_in = virXPathULongHex("string(@ecx_in)", ctxt, &ecx_in);
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ret_eax = virXPathULongHex("string(@eax)", ctxt, &eax);
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ret_ebx = virXPathULongHex("string(@ebx)", ctxt, &ebx);
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ret_ecx = virXPathULongHex("string(@ecx)", ctxt, &ecx);
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ret_edx = virXPathULongHex("string(@edx)", ctxt, &edx);
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if (ret_eax_in < 0 ||
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if (ret_eax_in < 0 || ret_ecx_in == -2 ||
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ret_eax == -2 || ret_ebx == -2 || ret_ecx == -2 || ret_edx == -2)
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return -1;
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cpuid->eax_in = eax_in;
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cpuid->ecx_in = ecx_in;
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cpuid->eax = eax;
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cpuid->ebx = ebx;
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cpuid->ecx = ecx;
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@ -1004,7 +1013,7 @@ x86ModelCompare(virCPUx86ModelPtr model1,
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while ((cpuid1 = x86DataCpuidNext(&iter1))) {
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virCPUx86CompareResult match = SUPERSET;
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if ((cpuid2 = x86DataCpuid(&model2->data, cpuid1->eax_in))) {
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if ((cpuid2 = x86DataCpuid(&model2->data, cpuid1))) {
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if (x86cpuidMatch(cpuid1, cpuid2))
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continue;
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else if (!x86cpuidMatchMasked(cpuid1, cpuid2))
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@ -1020,7 +1029,7 @@ x86ModelCompare(virCPUx86ModelPtr model1,
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while ((cpuid2 = x86DataCpuidNext(&iter2))) {
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virCPUx86CompareResult match = SUBSET;
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if ((cpuid1 = x86DataCpuid(&model1->data, cpuid2->eax_in))) {
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if ((cpuid1 = x86DataCpuid(&model1->data, cpuid2))) {
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if (x86cpuidMatch(cpuid2, cpuid1))
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continue;
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else if (!x86cpuidMatchMasked(cpuid2, cpuid1))
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@ -1265,10 +1274,10 @@ x86CPUDataFormat(const virCPUData *data)
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virBufferAddLit(&buf, "<cpudata arch='x86'>\n");
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while ((cpuid = x86DataCpuidNext(&iter))) {
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virBufferAsprintf(&buf,
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" <cpuid eax_in='0x%08x'"
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" <cpuid eax_in='0x%08x' ecx_in='0x%08x'"
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" eax='0x%08x' ebx='0x%08x'"
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" ecx='0x%08x' edx='0x%08x'/>\n",
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cpuid->eax_in,
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cpuid->eax_in, cpuid->ecx_in,
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cpuid->eax, cpuid->ebx, cpuid->ecx, cpuid->edx);
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}
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virBufferAddLit(&buf, "</cpudata>\n");
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@ -1853,22 +1862,21 @@ cpuidCall(virCPUx86CPUID *cpuid)
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{
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# if __x86_64__
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asm("xor %%ebx, %%ebx;" /* clear the other registers as some cpuid */
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"xor %%ecx, %%ecx;" /* functions may use them as additional */
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"xor %%edx, %%edx;" /* arguments */
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"xor %%edx, %%edx;" /* functions may use them as additional arguments */
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"cpuid;"
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: "=a" (cpuid->eax),
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"=b" (cpuid->ebx),
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"=c" (cpuid->ecx),
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"=d" (cpuid->edx)
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: "a" (cpuid->eax_in));
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: "a" (cpuid->eax_in),
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"c" (cpuid->ecx_in));
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# else
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/* we need to avoid direct use of ebx for CPUID output as it is used
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* for global offset table on i386 with -fPIC
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*/
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asm("push %%ebx;"
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"xor %%ebx, %%ebx;" /* clear the other registers as some cpuid */
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"xor %%ecx, %%ecx;" /* functions may use them as additional */
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"xor %%edx, %%edx;" /* arguments */
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"xor %%edx, %%edx;" /* functions may use them as additional arguments */
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"cpuid;"
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"mov %%ebx, %1;"
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"pop %%ebx;"
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@ -1876,7 +1884,8 @@ cpuidCall(virCPUx86CPUID *cpuid)
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"=r" (cpuid->ebx),
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"=c" (cpuid->ecx),
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"=d" (cpuid->edx)
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: "a" (cpuid->eax_in)
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: "a" (cpuid->eax_in),
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"c" (cpuid->ecx_in)
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: "cc");
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# endif
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}
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@ -1887,13 +1896,14 @@ cpuidSet(uint32_t base, virCPUx86Data *data)
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{
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uint32_t max;
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uint32_t i;
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virCPUx86CPUID cpuid = { base, 0, 0, 0, 0 };
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virCPUx86CPUID cpuid = { .eax_in = base };
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cpuidCall(&cpuid);
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max = cpuid.eax;
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for (i = base; i <= max; i++) {
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cpuid.eax_in = i;
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cpuid.ecx_in = 0;
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cpuidCall(&cpuid);
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if (virCPUx86DataAddCPUID(data, &cpuid) < 0)
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return -1;
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@ -29,6 +29,7 @@
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typedef struct _virCPUx86CPUID virCPUx86CPUID;
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struct _virCPUx86CPUID {
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uint32_t eax_in;
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uint32_t ecx_in;
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uint32_t eax;
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uint32_t ebx;
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uint32_t ecx;
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@ -6364,6 +6364,7 @@ qemuMonitorJSONParseCPUx86FeatureWord(virJSONValuePtr data,
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{
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const char *reg;
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unsigned long long eax_in;
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unsigned long long ecx_in = 0;
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unsigned long long features;
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memset(cpuid, 0, sizeof(*cpuid));
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@ -6378,6 +6379,8 @@ qemuMonitorJSONParseCPUx86FeatureWord(virJSONValuePtr data,
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_("missing or invalid cpuid-input-eax in CPU data"));
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return -1;
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}
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ignore_value(virJSONValueObjectGetNumberUlong(data, "cpuid-input-ecx",
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&ecx_in));
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if (virJSONValueObjectGetNumberUlong(data, "features", &features) < 0) {
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virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
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_("missing or invalid features in CPU data"));
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@ -6385,6 +6388,7 @@ qemuMonitorJSONParseCPUx86FeatureWord(virJSONValuePtr data,
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}
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cpuid->eax_in = eax_in;
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cpuid->ecx_in = ecx_in;
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if (STREQ(reg, "EAX")) {
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cpuid->eax = features;
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} else if (STREQ(reg, "EBX")) {
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@ -1,7 +1,7 @@
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<cpudata arch='x86'>
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<cpuid eax_in='0x00000001' eax='0x00000000' ebx='0x00000000' ecx='0xf7fa3203' edx='0x0f8bfbff'/>
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<cpuid eax_in='0x00000007' eax='0x00000000' ebx='0x001c0fbb' ecx='0x00000000' edx='0x00000000'/>
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<cpuid eax_in='0x0000000d' eax='0x00000001' ebx='0x00000000' ecx='0x00000000' edx='0x00000000'/>
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<cpuid eax_in='0x40000001' eax='0x010000fb' ebx='0x00000000' ecx='0x00000000' edx='0x00000000'/>
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<cpuid eax_in='0x80000001' eax='0x00000000' ebx='0x00000000' ecx='0x00000121' edx='0x2c100800'/>
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<cpuid eax_in='0x00000001' ecx_in='0x00000000' eax='0x00000000' ebx='0x00000000' ecx='0xf7fa3203' edx='0x0f8bfbff'/>
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<cpuid eax_in='0x00000007' ecx_in='0x00000000' eax='0x00000000' ebx='0x001c0fbb' ecx='0x00000000' edx='0x00000000'/>
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<cpuid eax_in='0x0000000d' ecx_in='0x00000001' eax='0x00000001' ebx='0x00000000' ecx='0x00000000' edx='0x00000000'/>
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<cpuid eax_in='0x40000001' ecx_in='0x00000000' eax='0x010000fb' ebx='0x00000000' ecx='0x00000000' edx='0x00000000'/>
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<cpuid eax_in='0x80000001' ecx_in='0x00000000' eax='0x00000000' ebx='0x00000000' ecx='0x00000121' edx='0x2c100800'/>
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</cpudata>
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@ -1,5 +1,5 @@
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<cpudata arch='x86'>
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<cpuid eax_in='0x00000001' eax='0x00000000' ebx='0x00000000' ecx='0x97ba2223' edx='0x078bfbfd'/>
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<cpuid eax_in='0x40000001' eax='0x0100003b' ebx='0x00000000' ecx='0x00000000' edx='0x00000000'/>
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<cpuid eax_in='0x80000001' eax='0x00000000' ebx='0x00000000' ecx='0x00000001' edx='0x28100800'/>
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<cpuid eax_in='0x00000001' ecx_in='0x00000000' eax='0x00000000' ebx='0x00000000' ecx='0x97ba2223' edx='0x078bfbfd'/>
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<cpuid eax_in='0x40000001' ecx_in='0x00000000' eax='0x0100003b' ebx='0x00000000' ecx='0x00000000' edx='0x00000000'/>
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<cpuid eax_in='0x80000001' ecx_in='0x00000000' eax='0x00000000' ebx='0x00000000' ecx='0x00000001' edx='0x28100800'/>
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</cpudata>
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@ -1,6 +1,6 @@
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<cpudata arch='x86'>
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<cpuid eax_in='0x00000001' eax='0x00000000' ebx='0x00000000' ecx='0x97ba2223' edx='0x0f8bfbff'/>
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<cpuid eax_in='0x00000007' eax='0x00000000' ebx='0x00000002' ecx='0x00000000' edx='0x00000000'/>
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<cpuid eax_in='0x40000001' eax='0x0100007b' ebx='0x00000000' ecx='0x00000000' edx='0x00000000'/>
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<cpuid eax_in='0x80000001' eax='0x00000000' ebx='0x00000000' ecx='0x00000001' edx='0x2993fbff'/>
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<cpuid eax_in='0x00000001' ecx_in='0x00000000' eax='0x00000000' ebx='0x00000000' ecx='0x97ba2223' edx='0x0f8bfbff'/>
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<cpuid eax_in='0x00000007' ecx_in='0x00000000' eax='0x00000000' ebx='0x00000002' ecx='0x00000000' edx='0x00000000'/>
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<cpuid eax_in='0x40000001' ecx_in='0x00000000' eax='0x0100007b' ebx='0x00000000' ecx='0x00000000' edx='0x00000000'/>
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<cpuid eax_in='0x80000001' ecx_in='0x00000000' eax='0x00000000' ebx='0x00000000' ecx='0x00000001' edx='0x2993fbff'/>
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</cpudata>
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