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Diffstat (limited to 'tools/testing/selftests/kvm/lib/ucall_common.c')
-rw-r--r--tools/testing/selftests/kvm/lib/ucall_common.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/lib/ucall_common.c b/tools/testing/selftests/kvm/lib/ucall_common.c
index 2f0e2ea941cc..816a3fa109bf 100644
--- a/tools/testing/selftests/kvm/lib/ucall_common.c
+++ b/tools/testing/selftests/kvm/lib/ucall_common.c
@@ -11,6 +11,11 @@ struct ucall_header {
struct ucall ucalls[KVM_MAX_VCPUS];
};
+int ucall_nr_pages_required(uint64_t page_size)
+{
+ return align_up(sizeof(struct ucall_header), page_size) / page_size;
+}
+
/*
* ucall_pool holds per-VM values (global data is duplicated by each VM), it
* must not be accessed from host code.
@@ -70,6 +75,45 @@ static void ucall_free(struct ucall *uc)
clear_bit(uc - ucall_pool->ucalls, ucall_pool->in_use);
}
+void ucall_assert(uint64_t cmd, const char *exp, const char *file,
+ unsigned int line, const char *fmt, ...)
+{
+ struct ucall *uc;
+ va_list va;
+
+ uc = ucall_alloc();
+ uc->cmd = cmd;
+
+ WRITE_ONCE(uc->args[GUEST_ERROR_STRING], (uint64_t)(exp));
+ WRITE_ONCE(uc->args[GUEST_FILE], (uint64_t)(file));
+ WRITE_ONCE(uc->args[GUEST_LINE], line);
+
+ va_start(va, fmt);
+ guest_vsnprintf(uc->buffer, UCALL_BUFFER_LEN, fmt, va);
+ va_end(va);
+
+ ucall_arch_do_ucall((vm_vaddr_t)uc->hva);
+
+ ucall_free(uc);
+}
+
+void ucall_fmt(uint64_t cmd, const char *fmt, ...)
+{
+ struct ucall *uc;
+ va_list va;
+
+ uc = ucall_alloc();
+ uc->cmd = cmd;
+
+ va_start(va, fmt);
+ guest_vsnprintf(uc->buffer, UCALL_BUFFER_LEN, fmt, va);
+ va_end(va);
+
+ ucall_arch_do_ucall((vm_vaddr_t)uc->hva);
+
+ ucall_free(uc);
+}
+
void ucall(uint64_t cmd, int nargs, ...)
{
struct ucall *uc;