Merge branch 'xenfv-kvm-15' of git://git.infradead.org/users/dwmw2/qemu into HEAD

This adds support for emulating Xen under Linux/KVM, based on kernel
patches which have been present since Linux v5.12. As with the kernel
support, it's derived from work started by João Martins of Oracle in
2018.

This series just adds the basic platform support — CPUID, hypercalls,
event channels, a stub of XenStore.

A full single-tenant internal implementation of XenStore, and patches
to make QEMU's Xen PV drivers work with this Xen emulation, are waiting
in the wings to be submitted in a follow-on patch series.

As noted in the documentation, it's enabled by setting the xen-version
property on the KVM accelerator, e.g.:

 qemu-system-x86_64 -serial mon:stdio -M q35 -display none -m 1G -smp 2 \
    -accel kvm,xen-version=0x4000e,kernel-irqchip=split \
    -kernel vmlinuz-6.0.7-301.fc37.x86_64 \
    -append "console=ttyS0 root=/dev/sda1" \
    -drive file=/var/lib/libvirt/images/fedora28.qcow2,if=none,id=disk \
    -device ahci,id=ahci -device ide-hd,drive=disk,bus=ahci.0

Even before this was merged, we've already been using it to find and fix
bugs in the Linux kernel Xen guest support:

https://lore.kernel.org/all/4bffa69a949bfdc92c4a18e5a1c3cbb3b94a0d32.camel@infradead.org/
https://lore.kernel.org/all/871qnunycr.ffs@tglx/

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 5 insertions, 11 deletions

diff --git a/hw/usb/u2f.h b/hw/usb/u2f.h
index a408a82927..8bff13141a 100644
--- a/hw/usb/u2f.h
+++ b/hw/usb/u2f.h
@@ -31,22 +31,16 @@
 #define U2FHID_PACKET_SIZE 64
 #define U2FHID_PENDING_IN_NUM 32
 
-typedef struct U2FKeyState U2FKeyState;
 typedef struct U2FKeyInfo U2FKeyInfo;
 
 #define TYPE_U2F_KEY "u2f-key"
-#define U2F_KEY(obj) \
-    OBJECT_CHECK(U2FKeyState, (obj), TYPE_U2F_KEY)
-#define U2F_KEY_CLASS(klass) \
-    OBJECT_CLASS_CHECK(U2FKeyClass, (klass), TYPE_U2F_KEY)
-#define U2F_KEY_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(U2FKeyClass, (obj), TYPE_U2F_KEY)
+OBJECT_DECLARE_TYPE(U2FKeyState, U2FKeyClass, U2F_KEY)
 
 /*
  * Callbacks to be used by the U2F key base device (i.e. hw/u2f.c)
  * to interact with its variants (i.e. hw/u2f-*.c)
  */
-typedef struct U2FKeyClass {
+struct U2FKeyClass {
     /*< private >*/
     USBDeviceClass parent_class;
 
@@ -55,12 +49,12 @@ typedef struct U2FKeyClass {
                             const uint8_t packet[U2FHID_PACKET_SIZE]);
     void (*realize)(U2FKeyState *key, Error **errp);
     void (*unrealize)(U2FKeyState *key);
-} U2FKeyClass;
+};
 
 /*
  * State of the U2F key base device (i.e. hw/u2f.c)
  */
-typedef struct U2FKeyState {
+struct U2FKeyState {
     USBDevice dev;
     USBEndpoint *ep;
     uint8_t idle;
@@ -70,7 +64,7 @@ typedef struct U2FKeyState {
     uint8_t pending_in_start;
     uint8_t pending_in_end;
     uint8_t pending_in_num;
-} U2FKeyState;
+};
 
 /*
  * API to be used by the U2F key device variants (i.e. hw/u2f-*.c)