[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v3 25/28] tools: Utility for dealing with featuresets
It is able to reports the current featuresets; both the static masks and dynamic featuresets from Xen, or to decode an arbitrary featureset into `/proc/cpuinfo` style strings. Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx> --- CC: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx> CC: Wei Liu <wei.liu2@xxxxxxxxxx> v2: No linking hackary --- .gitignore | 1 + tools/misc/Makefile | 4 + tools/misc/xen-cpuid.c | 394 +++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 399 insertions(+) create mode 100644 tools/misc/xen-cpuid.c diff --git a/.gitignore b/.gitignore index b40453e..20ffa2d 100644 --- a/.gitignore +++ b/.gitignore @@ -179,6 +179,7 @@ tools/misc/cpuperf/cpuperf-perfcntr tools/misc/cpuperf/cpuperf-xen tools/misc/xc_shadow tools/misc/xen_cpuperf +tools/misc/xen-cpuid tools/misc/xen-detect tools/misc/xen-tmem-list-parse tools/misc/xenperf diff --git a/tools/misc/Makefile b/tools/misc/Makefile index a2ef0ec..a94dad9 100644 --- a/tools/misc/Makefile +++ b/tools/misc/Makefile @@ -10,6 +10,7 @@ CFLAGS += $(CFLAGS_xeninclude) CFLAGS += $(CFLAGS_libxenstore) # Everything to be installed in regular bin/ +INSTALL_BIN-$(CONFIG_X86) += xen-cpuid INSTALL_BIN-$(CONFIG_X86) += xen-detect INSTALL_BIN += xencons INSTALL_BIN += xencov_split @@ -68,6 +69,9 @@ clean: .PHONY: distclean distclean: clean +xen-cpuid: xen-cpuid.o + $(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(LDLIBS_libxenguest) $(APPEND_LDFLAGS) + xen-hvmctx: xen-hvmctx.o $(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS) diff --git a/tools/misc/xen-cpuid.c b/tools/misc/xen-cpuid.c new file mode 100644 index 0000000..608c488 --- /dev/null +++ b/tools/misc/xen-cpuid.c @@ -0,0 +1,394 @@ +#include <stdio.h> +#include <stdlib.h> +#include <err.h> +#include <getopt.h> +#include <string.h> + +#include <xenctrl.h> + +#define ARRAY_SIZE(a) (sizeof a / sizeof *a) +static uint32_t nr_features; + +static const char *str_1d[32] = +{ + [ 0] = "fpu", [ 1] = "vme", + [ 2] = "de", [ 3] = "pse", + [ 4] = "tsc", [ 5] = "msr", + [ 6] = "pae", [ 7] = "mce", + [ 8] = "cx8", [ 9] = "apic", + [10] = "REZ", [11] = "sysenter", + [12] = "mtrr", [13] = "pge", + [14] = "mca", [15] = "cmov", + [16] = "pat", [17] = "pse36", + [18] = "psn", [19] = "clflush", + [20] = "REZ", [21] = "ds", + [22] = "acpi", [23] = "mmx", + [24] = "fxsr", [25] = "sse", + [26] = "sse2", [27] = "ss", + [28] = "htt", [29] = "tm", + [30] = "ia64", [31] = "pbe", +}; + +static const char *str_1c[32] = +{ + [ 0] = "sse3", [ 1] = "pclmulqdq", + [ 2] = "dtes64", [ 3] = "monitor", + [ 4] = "ds-cpl", [ 5] = "vmx", + [ 6] = "smx", [ 7] = "est", + [ 8] = "tm2", [ 9] = "ssse3", + [10] = "cntx-id", [11] = "sdgb", + [12] = "fma", [13] = "cx16", + [14] = "xtpr", [15] = "pdcm", + [16] = "REZ", [17] = "pcid", + [18] = "dca", [19] = "sse41", + [20] = "sse42", [21] = "x2apic", + [22] = "movebe", [23] = "popcnt", + [24] = "tsc-dl", [25] = "aesni", + [26] = "xsave", [27] = "osxsave", + [28] = "avx", [29] = "f16c", + [30] = "rdrnd", [31] = "hyper", +}; + +static const char *str_e1d[32] = +{ + [ 0] = "fpu", [ 1] = "vme", + [ 2] = "de", [ 3] = "pse", + [ 4] = "tsc", [ 5] = "msr", + [ 6] = "pae", [ 7] = "mce", + [ 8] = "cx8", [ 9] = "apic", + [10] = "REZ", [11] = "syscall", + [12] = "mtrr", [13] = "pge", + [14] = "mca", [15] = "cmov", + [16] = "fcmov", [17] = "pse36", + [18] = "REZ", [19] = "mp", + [20] = "nx", [21] = "REZ", + [22] = "mmx+", [23] = "mmx", + [24] = "fxsr", [25] = "fxsr+", + [26] = "pg1g", [27] = "rdtscp", + [28] = "REZ", [29] = "lm", + [30] = "3dnow+", [31] = "3dnow", +}; + +static const char *str_e1c[32] = +{ + [ 0] = "lahf_lm", [ 1] = "cmp", + [ 2] = "svm", [ 3] = "extapic", + [ 4] = "cr8d", [ 5] = "lzcnt", + [ 6] = "sse4a", [ 7] = "msse", + [ 8] = "3dnowpf", [ 9] = "osvw", + [10] = "ibs", [11] = "xop", + [12] = "skinit", [13] = "wdt", + [14] = "REZ", [15] = "lwp", + [16] = "fma4", [17] = "tce", + [18] = "REZ", [19] = "nodeid", + [20] = "REZ", [21] = "tbm", + [22] = "topoext", [23] = "perfctr_core", + [24] = "perfctr_nb", [25] = "REZ", + [26] = "dbx", [27] = "perftsc", + [28] = "pcx_l2i", [29] = "monitorx", + + [30 ... 31] = "REZ", +}; + +static const char *str_7b0[32] = +{ + [ 0] = "fsgsbase", [ 1] = "tsc-adj", + [ 2] = "sgx", [ 3] = "bmi1", + [ 4] = "hle", [ 5] = "avx2", + [ 6] = "REZ", [ 7] = "smep", + [ 8] = "bmi2", [ 9] = "erms", + [10] = "invpcid", [11] = "rtm", + [12] = "pqm", [13] = "depfpp", + [14] = "mpx", [15] = "pqe", + [16] = "avx512f", [17] = "avx512dq", + [18] = "rdseed", [19] = "adx", + [20] = "smap", [21] = "avx512ifma", + [22] = "pcomit", [23] = "clflushopt", + [24] = "clwb", [25] = "pt", + [26] = "avx512pf", [27] = "avx512er", + [28] = "avx512cd", [29] = "sha", + [30] = "avx512bw", [31] = "avx512vl", +}; + +static const char *str_Da1[32] = +{ + [ 0] = "xsaveopt", [ 1] = "xsavec", + [ 2] = "xgetbv1", [ 3] = "xsaves", + + [4 ... 31] = "REZ", +}; + +static const char *str_7c0[32] = +{ + [ 0] = "prechwt1", [ 1] = "avx512vbmi", + [ 2] = "REZ", [ 3] = "pku", + [ 4] = "ospke", + + [5 ... 31] = "REZ", +}; + +static const char *str_e7d[32] = +{ + [0 ... 7] = "REZ", + + [ 8] = "itsc", + + [9 ... 31] = "REZ", +}; + +static const char *str_e8b[32] = +{ + [ 0] = "clzero", + + [1 ... 31] = "REZ", +}; + +static struct { + const char *name; + const char *abbr; + const char **strs; +} decodes[] = +{ + { "0x00000001.edx", "1d", str_1d }, + { "0x00000001.ecx", "1c", str_1c }, + { "0x80000001.edx", "e1d", str_e1d }, + { "0x80000001.ecx", "e1c", str_e1c }, + { "0x0000000d:1.eax", "Da1", str_Da1 }, + { "0x00000007:0.ebx", "7b0", str_7b0 }, + { "0x00000007:0.ecx", "7c0", str_7c0 }, + { "0x80000007.edx", "e7d", str_e7d }, + { "0x80000008.ebx", "e8b", str_e8b }, +}; + +#define COL_ALIGN "18" + +static struct fsinfo { + const char *name; + uint32_t len; + uint32_t *fs; +} featuresets[] = +{ + [XEN_SYSCTL_cpu_featureset_host] = { "Host", 0, NULL }, + [XEN_SYSCTL_cpu_featureset_raw] = { "Raw", 0, NULL }, + [XEN_SYSCTL_cpu_featureset_pv] = { "PV", 0, NULL }, + [XEN_SYSCTL_cpu_featureset_hvm] = { "HVM", 0, NULL }, +}; + +static void dump_leaf(uint32_t leaf, const char **strs) +{ + unsigned i; + + if ( !strs ) + { + printf(" ???"); + return; + } + + for ( i = 0; i < 32; ++i ) + if ( leaf & (1u << i) ) + printf(" %s", strs[i] ?: "???" ); +} + +static void decode_featureset(const uint32_t *features, + const uint32_t length, + const char *name, + bool detail) +{ + unsigned int i; + + printf("%-"COL_ALIGN"s ", name); + for ( i = 0; i < length; ++i ) + printf("%08x%c", features[i], + i < length - 1 ? ':' : '\n'); + + if ( !detail ) + return; + + for ( i = 0; i < length && i < ARRAY_SIZE(decodes); ++i ) + { + printf(" [%02u] %-"COL_ALIGN"s", i, decodes[i].name ?: "<UNKNOWN>"); + if ( decodes[i].name ) + dump_leaf(features[i], decodes[i].strs); + printf("\n"); + } +} + +static void get_featureset(xc_interface *xch, unsigned int idx) +{ + struct fsinfo *f = &featuresets[idx]; + + f->len = xc_get_cpu_featureset_size(); + f->fs = calloc(nr_features, sizeof(*f->fs)); + + if ( !f->fs ) + err(1, "calloc(, featureset)"); + + if ( xc_get_cpu_featureset(xch, idx, &f->len, f->fs) ) + err(1, "xc_get_featureset()"); +} + +static void dump_info(xc_interface *xch, bool detail) +{ + unsigned int i; + + printf("nr_features: %u\n", nr_features); + + if ( !detail ) + { + printf(" %"COL_ALIGN"s ", "KEY"); + for ( i = 0; i < ARRAY_SIZE(decodes); ++i ) + printf("%-8s ", decodes[i].abbr ?: "???"); + printf("\n"); + } + + printf("\nStatic sets:\n"); + decode_featureset(xc_get_static_cpu_featuremask(XC_FEATUREMASK_KNOWN), + nr_features, "Known", detail); + decode_featureset(xc_get_static_cpu_featuremask(XC_FEATUREMASK_SPECIAL), + nr_features, "Special", detail); + decode_featureset(xc_get_static_cpu_featuremask(XC_FEATUREMASK_PV), + nr_features, "PV Mask", detail); + decode_featureset(xc_get_static_cpu_featuremask(XC_FEATUREMASK_HVM_SHADOW), + nr_features, "HVM Shadow Mask", detail); + decode_featureset(xc_get_static_cpu_featuremask(XC_FEATUREMASK_HVM_HAP), + nr_features, "HVM Hap Mask", detail); + + printf("\nDynamic sets:\n"); + for ( i = 0; i < ARRAY_SIZE(featuresets); ++i ) + { + get_featureset(xch, i); + + decode_featureset(featuresets[i].fs, featuresets[i].len, + featuresets[i].name, detail); + } + + for ( i = 0; i < ARRAY_SIZE(featuresets); ++i ) + free(featuresets[i].fs); +} + +int main(int argc, char **argv) +{ + enum { MODE_UNKNOWN, MODE_INFO, MODE_DETAIL, MODE_INTERPRET } + mode = MODE_UNKNOWN; + + nr_features = xc_get_cpu_featureset_size(); + + for ( ;; ) + { + int option_index = 0, c; + static struct option long_options[] = + { + { "help", no_argument, NULL, 'h' }, + { "info", no_argument, NULL, 'i' }, + { "detail", no_argument, NULL, 'd' }, + { "verbose", no_argument, NULL, 'v' }, + { NULL, 0, NULL, 0 }, + }; + + c = getopt_long(argc, argv, "hidv", long_options, &option_index); + + if ( c == -1 ) + break; + + switch ( c ) + { + case 'h': + option_error: + printf("Usage: %s [ info | detail | <featureset>* ]\n", argv[0]); + return 0; + + case 'i': + mode = MODE_INFO; + break; + + case 'd': + case 'v': + mode = MODE_DETAIL; + break; + + default: + printf("Bad option '%c'\n", c); + goto option_error; + } + } + + if ( mode == MODE_UNKNOWN ) + { + if ( optind == argc ) + mode = MODE_INFO; + else if ( optind < argc ) + { + if ( !strcmp(argv[optind], "info") ) + { + mode = MODE_INFO; + optind++; + } + else if ( !strcmp(argv[optind], "detail") ) + { + mode = MODE_DETAIL; + optind++; + } + else + mode = MODE_INTERPRET; + } + else + mode = MODE_INTERPRET; + } + + if ( mode == MODE_INFO || mode == MODE_DETAIL ) + { + xc_interface *xch = xc_interface_open(0, 0, 0); + + if ( !xch ) + err(1, "xc_interface_open"); + + if ( xc_get_cpu_featureset(xch, 0, &nr_features, NULL) ) + err(1, "xc_get_featureset(, NULL)"); + + dump_info(xch, mode == MODE_DETAIL); + + xc_interface_close(xch); + } + else + { + uint32_t fs[nr_features + 1]; + + while ( optind < argc ) + { + char *ptr = argv[optind++]; + unsigned int i = 0; + int offset; + + memset(fs, 0, sizeof(fs)); + + while ( sscanf(ptr, "%x%n", &fs[i], &offset) == 1 ) + { + i++; + ptr += offset; + + if ( i == nr_features ) + break; + + if ( *ptr == ':' ) + { + ptr++; continue; + } + break; + } + + decode_featureset(fs, i, "Raw", true); + } + } + + return 0; +} + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * tab-width: 4 + * indent-tabs-mode: nil + * End: + */ -- 2.1.4 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |