svm: INIT and STARTUP ipi test
Init the vcpu and issue the STARTUP ipi to indicate the vcpu
should execute its startup routine.
Signed-off-by: Cathy Avery <cavery@redhat.com>
Message-Id: <20200717113422.19575-3-cavery@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/x86/cstart64.S b/x86/cstart64.S
index 25a296c..5c6ad38 100644
--- a/x86/cstart64.S
+++ b/x86/cstart64.S
@@ -7,6 +7,7 @@
.globl tss_descr
.globl gdt64_desc
.globl online_cpus
+.globl cpu_online_count
ipi_vector = 0x20
diff --git a/x86/svm_tests.c b/x86/svm_tests.c
index e2455c8..0837aec 100644
--- a/x86/svm_tests.c
+++ b/x86/svm_tests.c
@@ -17,6 +17,8 @@
#define LATENCY_RUNS 1000000
+extern u16 cpu_online_count;
+
u64 tsc_start;
u64 tsc_end;
@@ -1911,6 +1913,58 @@
return get_test_stage(test) == 1;
}
+static void get_tss_entry(void *data)
+{
+ struct descriptor_table_ptr gdt;
+ struct segment_desc64 *gdt_table;
+ struct segment_desc64 *tss_entry;
+ u16 tr = 0;
+
+ sgdt(&gdt);
+ tr = str();
+ gdt_table = (struct segment_desc64 *) gdt.base;
+ tss_entry = &gdt_table[tr / sizeof(struct segment_desc64)];
+ *((struct segment_desc64 **)data) = tss_entry;
+}
+
+static int orig_cpu_count;
+
+static void init_startup_prepare(struct svm_test *test)
+{
+ struct segment_desc64 *tss_entry;
+ int i;
+
+ vmcb_ident(vmcb);
+
+ on_cpu(1, get_tss_entry, &tss_entry);
+
+ orig_cpu_count = cpu_online_count;
+
+ apic_icr_write(APIC_DEST_PHYSICAL | APIC_DM_INIT | APIC_INT_ASSERT,
+ id_map[1]);
+
+ delay(100000000ULL);
+
+ --cpu_online_count;
+
+ *(uint64_t *)tss_entry &= ~DESC_BUSY;
+
+ apic_icr_write(APIC_DEST_PHYSICAL | APIC_DM_STARTUP, id_map[1]);
+
+ for (i = 0; i < 5 && cpu_online_count < orig_cpu_count; i++)
+ delay(100000000ULL);
+}
+
+static bool init_startup_finished(struct svm_test *test)
+{
+ return true;
+}
+
+static bool init_startup_check(struct svm_test *test)
+{
+ return cpu_online_count == orig_cpu_count;
+}
+
#define TEST(name) { #name, .v2 = name }
/*
@@ -2335,6 +2389,9 @@
{ "reg_corruption", default_supported, reg_corruption_prepare,
default_prepare_gif_clear, reg_corruption_test,
reg_corruption_finished, reg_corruption_check },
+ { "svm_init_startup_test", smp_supported, init_startup_prepare,
+ default_prepare_gif_clear, null_test,
+ init_startup_finished, init_startup_check },
TEST(svm_cr4_osxsave_test),
TEST(svm_guest_state_test),
{ NULL, NULL, NULL, NULL, NULL, NULL, NULL }