From 252b11a01e061fd17821e53a41c8451a1d2c27bd Mon Sep 17 00:00:00 2001
From: Louis Burda <quent.burda@gmail.com>
Date: Tue, 10 Jan 2023 01:37:23 +0100
Subject: Begin ioctl and test-case overhaul

---
 util/.gitignore |  1 +
 util/debug.c    |  9 ++++-----
 util/reset.c    | 13 ++-----------
 util/svme.c     | 25 +++++++++++++++++++++++++
 4 files changed, 32 insertions(+), 16 deletions(-)
 create mode 100644 util/svme.c

(limited to 'util')

diff --git a/util/.gitignore b/util/.gitignore
index 52ab6d3..ef5bc67 100644
--- a/util/.gitignore
+++ b/util/.gitignore
@@ -1,2 +1,3 @@
 debug
+svme
 reset
diff --git a/util/debug.c b/util/debug.c
index 7a1e259..bfc8129 100644
--- a/util/debug.c
+++ b/util/debug.c
@@ -1,13 +1,12 @@
 #include "cachepc/uapi.h"
 
 #include <sys/ioctl.h>
-#include <stdlib.h>
-#include <stdio.h>
 #include <fcntl.h>
-#include <stdint.h>
 #include <err.h>
 #include <fcntl.h>
 #include <unistd.h>
+#include <stdint.h>
+#include <stdlib.h>
 
 int
 main(int argc, const char **argv)
@@ -18,9 +17,9 @@ main(int argc, const char **argv)
 	fd = open("/dev/kvm", O_RDONLY);
 	if (fd < 0) err(1, "open");
 
-	arg = argc > 1 ?  atoi(argv[1]) : 1;
+	arg = argc > 1 ? atoi(argv[1]) : 1;
 	ret = ioctl(fd, KVM_CPC_DEBUG, &arg);
-	if (ret == -1) err(1, "ioctl DEBUG");
+	if (ret == -1) err(1, "ioctl KVM_CPC_DEBUG");
 
 	close(fd);
 }
diff --git a/util/reset.c b/util/reset.c
index 125a2b6..6285149 100644
--- a/util/reset.c
+++ b/util/reset.c
@@ -1,29 +1,20 @@
 #include "cachepc/uapi.h"
 
 #include <sys/ioctl.h>
-#include <stdlib.h>
-#include <stdio.h>
 #include <fcntl.h>
-#include <stdint.h>
 #include <err.h>
-#include <fcntl.h>
 #include <unistd.h>
 
 int
 main(int argc, const char **argv)
 {
-	uint64_t arg;
 	int fd, ret;
 
 	fd = open("/dev/kvm", O_RDONLY);
 	if (fd < 0) err(1, "open");
 
-	ret = ioctl(fd, KVM_CPC_RESET_TRACKING);
-	if (ret) warn("ioctl RESET_TRACKING");
-
-	arg = 0;
-	ret = ioctl(fd, KVM_CPC_ACK_EVENT, &arg);
-	if (ret) warn("ioctl ACK_EVENT");
+	ret = ioctl(fd, KVM_CPC_RESET);
+	if (ret) warn("ioctl KVM_CPC_RESET");
 
 	close(fd);
 }
diff --git a/util/svme.c b/util/svme.c
new file mode 100644
index 0000000..4876ac4
--- /dev/null
+++ b/util/svme.c
@@ -0,0 +1,25 @@
+#include "cachepc/uapi.h"
+
+#include <sys/ioctl.h>
+#include <err.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <stdio.h>
+
+int
+main(int argc, const char **argv)
+{
+	uint32_t svme;
+	int kvm_fd;
+
+	kvm_fd = open("/dev/kvm", O_RDWR);
+	if (kvm_fd < 0) err(1, "open /dev/kvm");
+
+	if (ioctl(kvm_fd, KVM_CPC_SVME_READ, &svme))
+		err(1, "ioctl KVM_CPC_SVME_READ");
+
+	printf("%u\n", svme);
+
+	close(kvm_fd);
+}
-- 
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