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authorPeter Maydell2021-03-14 16:13:53 +0100
committerPeter Maydell2021-03-14 16:13:53 +0100
commit757acb9a8295e8be4a37b2cfc1cd947e357fd29c (patch)
tree881fdcb812a8b8d067d5cb59832b3bb31ce9bcf9 /tests/unit/test-x86-cpuid.c
parentMerge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20210314'... (diff)
parentREADME: Add Documentation blurb (diff)
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Merge remote-tracking branch 'remotes/thuth-gitlab/tags/pull-request-2021-03-12' into staging
* Move unit and bench tests into separate directories * Clean-up and improve gitlab-ci jobs * Drop the non-working "check-speed" makefile target * Minor documentation updates # gpg: Signature made Fri 12 Mar 2021 17:18:45 GMT # gpg: using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5 # gpg: issuer "thuth@redhat.com" # gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full] # gpg: aka "Thomas Huth <thuth@redhat.com>" [full] # gpg: aka "Thomas Huth <huth@tuxfamily.org>" [full] # gpg: aka "Thomas Huth <th.huth@posteo.de>" [unknown] # Primary key fingerprint: 27B8 8847 EEE0 2501 18F3 EAB9 2ED9 D774 FE70 2DB5 * remotes/thuth-gitlab/tags/pull-request-2021-03-12: README: Add Documentation blurb MAINTAINERS: Merge the Gitlab-CI section into the generic CI section tests: remove "make check-speed" in favor of "make bench" gitlab-ci.yml: Merge check-crypto-old jobs into the build-crypto-old jobs gitlab-ci.yml: Merge one of the coroutine jobs with the tcg-disabled job gitlab-ci.yml: Add some missing dependencies to the jobs gitlab-ci.yml: Move build-tools-and-docs-debian to a better place tests: Move benchmarks into a separate folder tests: Move unit tests into a separate directory Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'tests/unit/test-x86-cpuid.c')
-rw-r--r--tests/unit/test-x86-cpuid.c138
1 files changed, 138 insertions, 0 deletions
diff --git a/tests/unit/test-x86-cpuid.c b/tests/unit/test-x86-cpuid.c
new file mode 100644
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+++ b/tests/unit/test-x86-cpuid.c
@@ -0,0 +1,138 @@
+/*
+ * Test code for x86 CPUID and Topology functions
+ *
+ * Copyright (c) 2012 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "qemu/osdep.h"
+
+#include "hw/i386/topology.h"
+
+static void test_topo_bits(void)
+{
+ X86CPUTopoInfo topo_info = {0};
+
+ /* simple tests for 1 thread per core, 1 core per die, 1 die per package */
+ topo_info = (X86CPUTopoInfo) {1, 1, 1};
+ g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 0);
+ g_assert_cmpuint(apicid_core_width(&topo_info), ==, 0);
+ g_assert_cmpuint(apicid_die_width(&topo_info), ==, 0);
+
+ topo_info = (X86CPUTopoInfo) {1, 1, 1};
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 0), ==, 0);
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1), ==, 1);
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2), ==, 2);
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 3), ==, 3);
+
+
+ /* Test field width calculation for multiple values
+ */
+ topo_info = (X86CPUTopoInfo) {1, 1, 2};
+ g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 1);
+ topo_info = (X86CPUTopoInfo) {1, 1, 3};
+ g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 2);
+ topo_info = (X86CPUTopoInfo) {1, 1, 4};
+ g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 2);
+
+ topo_info = (X86CPUTopoInfo) {1, 1, 14};
+ g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 4);
+ topo_info = (X86CPUTopoInfo) {1, 1, 15};
+ g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 4);
+ topo_info = (X86CPUTopoInfo) {1, 1, 16};
+ g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 4);
+ topo_info = (X86CPUTopoInfo) {1, 1, 17};
+ g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 5);
+
+
+ topo_info = (X86CPUTopoInfo) {1, 30, 2};
+ g_assert_cmpuint(apicid_core_width(&topo_info), ==, 5);
+ topo_info = (X86CPUTopoInfo) {1, 31, 2};
+ g_assert_cmpuint(apicid_core_width(&topo_info), ==, 5);
+ topo_info = (X86CPUTopoInfo) {1, 32, 2};
+ g_assert_cmpuint(apicid_core_width(&topo_info), ==, 5);
+ topo_info = (X86CPUTopoInfo) {1, 33, 2};
+ g_assert_cmpuint(apicid_core_width(&topo_info), ==, 6);
+
+ topo_info = (X86CPUTopoInfo) {1, 30, 2};
+ g_assert_cmpuint(apicid_die_width(&topo_info), ==, 0);
+ topo_info = (X86CPUTopoInfo) {2, 30, 2};
+ g_assert_cmpuint(apicid_die_width(&topo_info), ==, 1);
+ topo_info = (X86CPUTopoInfo) {3, 30, 2};
+ g_assert_cmpuint(apicid_die_width(&topo_info), ==, 2);
+ topo_info = (X86CPUTopoInfo) {4, 30, 2};
+ g_assert_cmpuint(apicid_die_width(&topo_info), ==, 2);
+
+ /* build a weird topology and see if IDs are calculated correctly
+ */
+
+ /* This will use 2 bits for thread ID and 3 bits for core ID
+ */
+ topo_info = (X86CPUTopoInfo) {1, 6, 3};
+ g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 2);
+ g_assert_cmpuint(apicid_core_offset(&topo_info), ==, 2);
+ g_assert_cmpuint(apicid_die_offset(&topo_info), ==, 5);
+ g_assert_cmpuint(apicid_pkg_offset(&topo_info), ==, 5);
+
+ topo_info = (X86CPUTopoInfo) {1, 6, 3};
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 0), ==, 0);
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1), ==, 1);
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2), ==, 2);
+
+ topo_info = (X86CPUTopoInfo) {1, 6, 3};
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1 * 3 + 0), ==,
+ (1 << 2) | 0);
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1 * 3 + 1), ==,
+ (1 << 2) | 1);
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1 * 3 + 2), ==,
+ (1 << 2) | 2);
+
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2 * 3 + 0), ==,
+ (2 << 2) | 0);
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2 * 3 + 1), ==,
+ (2 << 2) | 1);
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2 * 3 + 2), ==,
+ (2 << 2) | 2);
+
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 5 * 3 + 0), ==,
+ (5 << 2) | 0);
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 5 * 3 + 1), ==,
+ (5 << 2) | 1);
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 5 * 3 + 2), ==,
+ (5 << 2) | 2);
+
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info,
+ 1 * 6 * 3 + 0 * 3 + 0), ==, (1 << 5));
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info,
+ 1 * 6 * 3 + 1 * 3 + 1), ==, (1 << 5) | (1 << 2) | 1);
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info,
+ 3 * 6 * 3 + 5 * 3 + 2), ==, (3 << 5) | (5 << 2) | 2);
+}
+
+int main(int argc, char **argv)
+{
+ g_test_init(&argc, &argv, NULL);
+
+ g_test_add_func("/cpuid/topology/basic", test_topo_bits);
+
+ g_test_run();
+
+ return 0;
+}