From 10f20ae96b76aeaa97fbd37e757eee49b4ec77a8 Mon Sep 17 00:00:00 2001 From: Babu Moger Date: Mon, 31 Aug 2020 13:42:48 -0500 Subject: Revert "hw/386: Add EPYC mode topology decoding functions" This reverts commit 7568b205555a6405042f62c64af3268f4330aed5. Remove the EPYC specific apicid decoding and use the generic default decoding. Signed-off-by: Babu Moger Reviewed-by: Igor Mammedov Message-Id: <159889936871.21294.1454526726636639780.stgit@naples-babu.amd.com> Signed-off-by: Eduardo Habkost --- include/hw/i386/topology.h | 100 --------------------------------------------- 1 file changed, 100 deletions(-) (limited to 'include/hw/i386/topology.h') diff --git a/include/hw/i386/topology.h b/include/hw/i386/topology.h index 07239f95f4..b9593b9905 100644 --- a/include/hw/i386/topology.h +++ b/include/hw/i386/topology.h @@ -47,7 +47,6 @@ typedef uint32_t apic_id_t; typedef struct X86CPUTopoIDs { unsigned pkg_id; - unsigned node_id; unsigned die_id; unsigned core_id; unsigned smt_id; @@ -89,11 +88,6 @@ static inline unsigned apicid_die_width(X86CPUTopoInfo *topo_info) return apicid_bitwidth_for_count(topo_info->dies_per_pkg); } -/* Bit width of the node_id field per socket */ -static inline unsigned apicid_node_width_epyc(X86CPUTopoInfo *topo_info) -{ - return apicid_bitwidth_for_count(MAX(topo_info->nodes_per_pkg, 1)); -} /* Bit offset of the Core_ID field */ static inline unsigned apicid_core_offset(X86CPUTopoInfo *topo_info) @@ -114,100 +108,6 @@ static inline unsigned apicid_pkg_offset(X86CPUTopoInfo *topo_info) return apicid_die_offset(topo_info) + apicid_die_width(topo_info); } -#define NODE_ID_OFFSET 3 /* Minimum node_id offset if numa configured */ - -/* - * Bit offset of the node_id field - * - * Make sure nodes_per_pkg > 0 if numa configured else zero. - */ -static inline unsigned apicid_node_offset_epyc(X86CPUTopoInfo *topo_info) -{ - unsigned offset = apicid_die_offset(topo_info) + - apicid_die_width(topo_info); - - if (topo_info->nodes_per_pkg) { - return MAX(NODE_ID_OFFSET, offset); - } else { - return offset; - } -} - -/* Bit offset of the Pkg_ID (socket ID) field */ -static inline unsigned apicid_pkg_offset_epyc(X86CPUTopoInfo *topo_info) -{ - return apicid_node_offset_epyc(topo_info) + - apicid_node_width_epyc(topo_info); -} - -/* - * Make APIC ID for the CPU based on Pkg_ID, Core_ID, SMT_ID - * - * The caller must make sure core_id < nr_cores and smt_id < nr_threads. - */ -static inline apic_id_t -x86_apicid_from_topo_ids_epyc(X86CPUTopoInfo *topo_info, - const X86CPUTopoIDs *topo_ids) -{ - return (topo_ids->pkg_id << apicid_pkg_offset_epyc(topo_info)) | - (topo_ids->node_id << apicid_node_offset_epyc(topo_info)) | - (topo_ids->die_id << apicid_die_offset(topo_info)) | - (topo_ids->core_id << apicid_core_offset(topo_info)) | - topo_ids->smt_id; -} - -static inline void x86_topo_ids_from_idx_epyc(X86CPUTopoInfo *topo_info, - unsigned cpu_index, - X86CPUTopoIDs *topo_ids) -{ - unsigned nr_nodes = MAX(topo_info->nodes_per_pkg, 1); - unsigned nr_dies = topo_info->dies_per_pkg; - unsigned nr_cores = topo_info->cores_per_die; - unsigned nr_threads = topo_info->threads_per_core; - unsigned cores_per_node = DIV_ROUND_UP((nr_dies * nr_cores * nr_threads), - nr_nodes); - - topo_ids->pkg_id = cpu_index / (nr_dies * nr_cores * nr_threads); - topo_ids->node_id = (cpu_index / cores_per_node) % nr_nodes; - topo_ids->die_id = cpu_index / (nr_cores * nr_threads) % nr_dies; - topo_ids->core_id = cpu_index / nr_threads % nr_cores; - topo_ids->smt_id = cpu_index % nr_threads; -} - -/* - * Calculate thread/core/package IDs for a specific topology, - * based on APIC ID - */ -static inline void x86_topo_ids_from_apicid_epyc(apic_id_t apicid, - X86CPUTopoInfo *topo_info, - X86CPUTopoIDs *topo_ids) -{ - topo_ids->smt_id = apicid & - ~(0xFFFFFFFFUL << apicid_smt_width(topo_info)); - topo_ids->core_id = - (apicid >> apicid_core_offset(topo_info)) & - ~(0xFFFFFFFFUL << apicid_core_width(topo_info)); - topo_ids->die_id = - (apicid >> apicid_die_offset(topo_info)) & - ~(0xFFFFFFFFUL << apicid_die_width(topo_info)); - topo_ids->node_id = - (apicid >> apicid_node_offset_epyc(topo_info)) & - ~(0xFFFFFFFFUL << apicid_node_width_epyc(topo_info)); - topo_ids->pkg_id = apicid >> apicid_pkg_offset_epyc(topo_info); -} - -/* - * Make APIC ID for the CPU 'cpu_index' - * - * 'cpu_index' is a sequential, contiguous ID for the CPU. - */ -static inline apic_id_t x86_apicid_from_cpu_idx_epyc(X86CPUTopoInfo *topo_info, - unsigned cpu_index) -{ - X86CPUTopoIDs topo_ids; - x86_topo_ids_from_idx_epyc(topo_info, cpu_index, &topo_ids); - return x86_apicid_from_topo_ids_epyc(topo_info, &topo_ids); -} /* Make APIC ID for the CPU based on Pkg_ID, Core_ID, SMT_ID * * The caller must make sure core_id < nr_cores and smt_id < nr_threads. -- cgit 1.4.1 From 0a48666a31575f1dc4e4c63f2edaa29c16923fb7 Mon Sep 17 00:00:00 2001 From: Babu Moger Date: Mon, 31 Aug 2020 13:42:54 -0500 Subject: Revert "hw/i386: Update structures to save the number of nodes per package" This reverts commit c24a41bb53c0854d22c96b30d57cfcaa543c409d. Remove the EPYC specific apicid decoding and use the generic default decoding. Signed-off-by: Babu Moger Reviewed-by: Igor Mammedov Message-Id: <159889937478.21294.4192291354416942986.stgit@naples-babu.amd.com> Signed-off-by: Eduardo Habkost --- hw/i386/pc.c | 1 - hw/i386/x86.c | 1 - include/hw/i386/topology.h | 1 - target/i386/cpu.c | 1 - target/i386/cpu.h | 1 - tests/test-x86-cpuid.c | 40 ++++++++++++++++++++-------------------- 6 files changed, 20 insertions(+), 25 deletions(-) (limited to 'include/hw/i386/topology.h') diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 0677d6a272..d11daacc23 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1501,7 +1501,6 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev, init_topo_info(&topo_info, x86ms); env->nr_dies = x86ms->smp_dies; - env->nr_nodes = topo_info.nodes_per_pkg; /* * If APIC ID is not set, diff --git a/hw/i386/x86.c b/hw/i386/x86.c index 727c4a0f1d..c1954db152 100644 --- a/hw/i386/x86.c +++ b/hw/i386/x86.c @@ -62,7 +62,6 @@ inline void init_topo_info(X86CPUTopoInfo *topo_info, { MachineState *ms = MACHINE(x86ms); - topo_info->nodes_per_pkg = ms->numa_state->num_nodes / ms->smp.sockets; topo_info->dies_per_pkg = x86ms->smp_dies; topo_info->cores_per_die = ms->smp.cores; topo_info->threads_per_core = ms->smp.threads; diff --git a/include/hw/i386/topology.h b/include/hw/i386/topology.h index b9593b9905..81573f6cfd 100644 --- a/include/hw/i386/topology.h +++ b/include/hw/i386/topology.h @@ -53,7 +53,6 @@ typedef struct X86CPUTopoIDs { } X86CPUTopoIDs; typedef struct X86CPUTopoInfo { - unsigned nodes_per_pkg; unsigned dies_per_pkg; unsigned cores_per_die; unsigned threads_per_core; diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 256bfa669f..ba4667b33c 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -7023,7 +7023,6 @@ static void x86_cpu_initfn(Object *obj) FeatureWord w; env->nr_dies = 1; - env->nr_nodes = 1; cpu_set_cpustate_pointers(cpu); object_property_add(obj, "family", "int", diff --git a/target/i386/cpu.h b/target/i386/cpu.h index 5ff8ad8427..d3097be6a5 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -1629,7 +1629,6 @@ typedef struct CPUX86State { TPRAccess tpr_access_type; unsigned nr_dies; - unsigned nr_nodes; } CPUX86State; struct kvm_msrs; diff --git a/tests/test-x86-cpuid.c b/tests/test-x86-cpuid.c index 049030a50e..bfabc0403a 100644 --- a/tests/test-x86-cpuid.c +++ b/tests/test-x86-cpuid.c @@ -31,12 +31,12 @@ 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) {0, 1, 1, 1}; + 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) {0, 1, 1, 1}; + 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); @@ -45,39 +45,39 @@ static void test_topo_bits(void) /* Test field width calculation for multiple values */ - topo_info = (X86CPUTopoInfo) {0, 1, 1, 2}; + topo_info = (X86CPUTopoInfo) {1, 1, 2}; g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 1); - topo_info = (X86CPUTopoInfo) {0, 1, 1, 3}; + topo_info = (X86CPUTopoInfo) {1, 1, 3}; g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 2); - topo_info = (X86CPUTopoInfo) {0, 1, 1, 4}; + topo_info = (X86CPUTopoInfo) {1, 1, 4}; g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 2); - topo_info = (X86CPUTopoInfo) {0, 1, 1, 14}; + topo_info = (X86CPUTopoInfo) {1, 1, 14}; g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 4); - topo_info = (X86CPUTopoInfo) {0, 1, 1, 15}; + topo_info = (X86CPUTopoInfo) {1, 1, 15}; g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 4); - topo_info = (X86CPUTopoInfo) {0, 1, 1, 16}; + topo_info = (X86CPUTopoInfo) {1, 1, 16}; g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 4); - topo_info = (X86CPUTopoInfo) {0, 1, 1, 17}; + topo_info = (X86CPUTopoInfo) {1, 1, 17}; g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 5); - topo_info = (X86CPUTopoInfo) {0, 1, 30, 2}; + topo_info = (X86CPUTopoInfo) {1, 30, 2}; g_assert_cmpuint(apicid_core_width(&topo_info), ==, 5); - topo_info = (X86CPUTopoInfo) {0, 1, 31, 2}; + topo_info = (X86CPUTopoInfo) {1, 31, 2}; g_assert_cmpuint(apicid_core_width(&topo_info), ==, 5); - topo_info = (X86CPUTopoInfo) {0, 1, 32, 2}; + topo_info = (X86CPUTopoInfo) {1, 32, 2}; g_assert_cmpuint(apicid_core_width(&topo_info), ==, 5); - topo_info = (X86CPUTopoInfo) {0, 1, 33, 2}; + topo_info = (X86CPUTopoInfo) {1, 33, 2}; g_assert_cmpuint(apicid_core_width(&topo_info), ==, 6); - topo_info = (X86CPUTopoInfo) {0, 1, 30, 2}; + topo_info = (X86CPUTopoInfo) {1, 30, 2}; g_assert_cmpuint(apicid_die_width(&topo_info), ==, 0); - topo_info = (X86CPUTopoInfo) {0, 2, 30, 2}; + topo_info = (X86CPUTopoInfo) {2, 30, 2}; g_assert_cmpuint(apicid_die_width(&topo_info), ==, 1); - topo_info = (X86CPUTopoInfo) {0, 3, 30, 2}; + topo_info = (X86CPUTopoInfo) {3, 30, 2}; g_assert_cmpuint(apicid_die_width(&topo_info), ==, 2); - topo_info = (X86CPUTopoInfo) {0, 4, 30, 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 @@ -85,18 +85,18 @@ static void test_topo_bits(void) /* This will use 2 bits for thread ID and 3 bits for core ID */ - topo_info = (X86CPUTopoInfo) {0, 1, 6, 3}; + 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) {0, 1, 6, 3}; + 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) {0, 1, 6, 3}; + 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), ==, -- cgit 1.4.1