sys/linux: rework ioctl$KVM_SET_GUEST_DEBUG

This ioctl accepts an arch-specific struct as an argument, so better split it
into several arch-specific ioctls.

To avoid compilation errors on exotic arches like MIPS, this patch also adds
sys/linux/dev_kvm_extra.txt that takes care of them.

While at it, also define KVM_GUESTDBG_USE_HW.

1 files changed, 12 insertions, 0 deletions

diff --git a/sys/linux/dev_kvm_extra.txt b/sys/linux/dev_kvm_extra.txt
new file mode 100644
index 000000000..395ce577d
--- /dev/null
+++ b/sys/linux/dev_kvm_extra.txt
@@ -0,0 +1,12 @@
+# Copyright 2025 syzkaller project authors. All rights reserved.
+# Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
+
+# This file is used for non-x86, non-ARM definitions.
+
+meta arches["mips64le", "ppc64le", "s390x"]
+
+ioctl$KVM_SET_GUEST_DEBUG_generic(fd fd_kvmcpu, cmd const[KVM_SET_GUEST_DEBUG], arg ptr[in, kvm_guest_debug[kvm_guest_debug_arch_generic]])
+
+kvm_guest_debug_arch_generic {
+	reg	array[int64, 8]
+}