Re: [PATCH v14 13/25] samples: Add sample userspace Gunyah VM Manager
From: Bjorn Andersson <andersson@kernel.org>
Date: 2023-08-05 18:00:44
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On Tue, Jun 13, 2023 at 10:20:41AM -0700, Elliot Berman wrote:
quoted hunk ↗ jump to hunk
diff --git a/samples/gunyah/gunyah_vmm.c b/samples/gunyah/gunyah_vmm.c new file mode 100644 index 0000000000000..6f636ac227c69 --- /dev/null +++ b/samples/gunyah/gunyah_vmm.c@@ -0,0 +1,266 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#include <stdlib.h> +#include <stdio.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <sys/ioctl.h> +#include <getopt.h> +#include <limits.h> +#include <stdint.h> +#include <fcntl.h> +#include <string.h> +#include <sys/sysmacros.h> +#define __USE_GNU +#include <sys/mman.h> + +#include <linux/gunyah.h> + +#define DEFAULT_GUEST_BASE 0x80000000 +#define DEFAULT_GUEST_SIZE 0x6400000 /* 100 MiB */ +#define DEFAULT_DTB_OFFSET 0x45f0000 /* 70MiB - 64 KiB */ +#define DEFAULT_RAMDISK_OFFSET 0x4600000 /* 70MiB */
Would be nice if the default ramdisk offset was close to accounting for the kernel modules produced in an upstream defconfig build... Perhaps just bumping the default guest size to facilitate this? [..]
quoted hunk ↗ jump to hunk
diff --git a/samples/gunyah/sample_vm.dts b/samples/gunyah/sample_vm.dts new file mode 100644 index 0000000000000..293bbc0469c8f --- /dev/null +++ b/samples/gunyah/sample_vm.dts@@ -0,0 +1,68 @@ +// SPDX-License-Identifier: BSD-3-Clause +/* + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +/dts-v1/; + +/ { + #address-cells = <2>; + #size-cells = <2>; + interrupt-parent = <&intc>; + + chosen { + bootargs = "nokaslr";
Is this required?
+ };
+
+ cpus {
+ #address-cells = <0x2>;
+ #size-cells = <0>;
+
+ cpu@0 {
+ device_type = "cpu";
+ compatible = "arm,armv8";
+ reg = <0 0>;
+ };
+ };
+
+ intc: interrupt-controller@3FFF0000 {
+ compatible = "arm,gic-v3";
+ #interrupt-cells = <3>;
+ #address-cells = <2>;
+ #size-cells = <2>;
+ interrupt-controller;
+ reg = <0 0x3FFF0000 0 0x10000>,
+ <0 0x3FFD0000 0 0x20000>;Lowercase hex digits please.
+ };
+
+ timer {
+ compatible = "arm,armv8-timer";
+ always-on;
+ interrupts = <1 13 0x108>,
+ <1 14 0x108>,
+ <1 11 0x108>,
+ <1 10 0x108>;
+ clock-frequency = <19200000>;
+ };
+
+ gunyah-vm-config {Is this node documented somewhere? Regards, Bjorn
+ image-name = "linux_vm_0";
+
+ memory {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ base-address = <0 0x80000000>;
+ };
+
+ interrupts {
+ config = <&intc>;
+ };
+
+ vcpus {
+ affinity-map = < 0 >;
+ sched-priority = < (-1) >;
+ sched-timeslice = < 2000 >;
+ };
+ };
+};
--
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