Merge tag 'pull-xen-20230607' of https://xenbits.xen.org/git-http/people/aperard/qemu-dm into staging

Xen queue

- fix for xen-block segv
- Resolve TYPE_PIIX3_XEN_DEVICE
- Xen emulation build/Coverity fixes

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# gpg: Signature made Wed 07 Jun 2023 07:16:45 AM PDT
# gpg:                using RSA key F80C006308E22CFD8A92E7980CF5572FD7FB55AF
# gpg: Good signature from "Anthony PERARD <anthony.perard@gmail.com>" [unknown]
# gpg:                 aka "Anthony PERARD <anthony.perard@citrix.com>" [unknown]
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# Primary key fingerprint: 5379 2F71 024C 600F 778A  7161 D8D5 7199 DF83 42C8
#      Subkey fingerprint: F80C 0063 08E2 2CFD 8A92  E798 0CF5 572F D7FB 55AF

* tag 'pull-xen-20230607' of https://xenbits.xen.org/git-http/people/aperard/qemu-dm:
  xen-block: fix segv on unrealize
  hw/isa/piix3: Resolve redundant TYPE_PIIX3_XEN_DEVICE
  hw/isa/piix3: Resolve redundant k->config_write assignments
  hw/isa/piix3: Avoid Xen-specific variant of piix3_write_config()
  hw/isa/piix3: Wire up Xen PCI IRQ handling outside of PIIX3
  hw/isa/piix3: Reuse piix3_realize() in piix3_xen_realize()
  hw/pci/pci.c: Don't leak PCIBus::irq_count[] in pci_bus_irqs()
  include/hw/xen/xen: Rename xen_piix3_set_irq() to xen_intx_set_irq()
  hw/xen: Fix broken check for invalid state in xs_be_open()
  xen: Drop support for Xen versions below 4.7.1
  hw/xen: Fix memory leak in libxenstore_open() for Xen
  hw/xen: Simplify emulated Xen platform init

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

2 files changed, 2 insertions, 107 deletions

diff --git a/include/hw/xen/xen.h b/include/hw/xen/xen.h
index 2bd8ec742d..37ecc91fc3 100644
--- a/include/hw/xen/xen.h
+++ b/include/hw/xen/xen.h
@@ -39,7 +39,7 @@ extern bool xen_domid_restrict;
 
 int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num);
 int xen_set_pci_link_route(uint8_t link, uint8_t irq);
-void xen_piix3_set_irq(void *opaque, int irq_num, int level);
+void xen_intx_set_irq(void *opaque, int irq_num, int level);
 void xen_hvm_inject_msi(uint64_t addr, uint32_t data);
 int xen_is_pirq_msi(uint32_t msi_data);
 
diff --git a/include/hw/xen/xen_native.h b/include/hw/xen/xen_native.h
index 6bcc83baf9..f11eb423e3 100644
--- a/include/hw/xen/xen_native.h
+++ b/include/hw/xen/xen_native.h
@@ -24,23 +24,11 @@
 extern xc_interface *xen_xc;
 
 /*
- * We don't support Xen prior to 4.2.0.
+ * We don't support Xen prior to 4.7.1.
  */
 
-/* Xen 4.2 through 4.6 */
-#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 40701
-
-typedef xc_interface xenforeignmemory_handle;
-
-#define xenforeignmemory_open(l, f) xen_xc
-#define xenforeignmemory_close(h)
-
-#else /* CONFIG_XEN_CTRL_INTERFACE_VERSION >= 40701 */
-
 #include <xenforeignmemory.h>
 
-#endif
-
 extern xenforeignmemory_handle *xen_fmem;
 
 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 40900
@@ -148,8 +136,6 @@ static inline xendevicemodel_handle *xendevicemodel_open(
     return xen_xc;
 }
 
-#if CONFIG_XEN_CTRL_INTERFACE_VERSION >= 40500
-
 static inline int xendevicemodel_create_ioreq_server(
     xendevicemodel_handle *dmod, domid_t domid, int handle_bufioreq,
     ioservid_t *id)
@@ -211,8 +197,6 @@ static inline int xendevicemodel_set_ioreq_server_state(
     return xc_hvm_set_ioreq_server_state(dmod, domid, id, enabled);
 }
 
-#endif /* CONFIG_XEN_CTRL_INTERFACE_VERSION >= 40500 */
-
 static inline int xendevicemodel_set_pci_intx_level(
     xendevicemodel_handle *dmod, domid_t domid, uint16_t segment,
     uint8_t bus, uint8_t device, uint8_t intx, unsigned int level)
@@ -340,15 +324,6 @@ static inline int xen_get_vmport_regs_pfn(xc_interface *xc, domid_t dom,
 }
 #endif
 
-/* Xen before 4.6 */
-#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 40600
-
-#ifndef HVM_IOREQSRV_BUFIOREQ_ATOMIC
-#define HVM_IOREQSRV_BUFIOREQ_ATOMIC 2
-#endif
-
-#endif
-
 static inline int xen_get_default_ioreq_server_info(domid_t dom,
                                                     xen_pfn_t *ioreq_pfn,
                                                     xen_pfn_t *bufioreq_pfn,
@@ -386,84 +361,6 @@ static inline int xen_get_default_ioreq_server_info(domid_t dom,
     return 0;
 }
 
-/* Xen before 4.5 */
-#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 40500
-
-#ifndef HVM_PARAM_BUFIOREQ_EVTCHN
-#define HVM_PARAM_BUFIOREQ_EVTCHN 26
-#endif
-
-#define IOREQ_TYPE_PCI_CONFIG 2
-
-typedef uint16_t ioservid_t;
-
-static inline void xen_map_memory_section(domid_t dom,
-                                          ioservid_t ioservid,
-                                          MemoryRegionSection *section)
-{
-}
-
-static inline void xen_unmap_memory_section(domid_t dom,
-                                            ioservid_t ioservid,
-                                            MemoryRegionSection *section)
-{
-}
-
-static inline void xen_map_io_section(domid_t dom,
-                                      ioservid_t ioservid,
-                                      MemoryRegionSection *section)
-{
-}
-
-static inline void xen_unmap_io_section(domid_t dom,
-                                        ioservid_t ioservid,
-                                        MemoryRegionSection *section)
-{
-}
-
-static inline void xen_map_pcidev(domid_t dom,
-                                  ioservid_t ioservid,
-                                  PCIDevice *pci_dev)
-{
-}
-
-static inline void xen_unmap_pcidev(domid_t dom,
-                                    ioservid_t ioservid,
-                                    PCIDevice *pci_dev)
-{
-}
-
-static inline void xen_create_ioreq_server(domid_t dom,
-                                           ioservid_t *ioservid)
-{
-}
-
-static inline void xen_destroy_ioreq_server(domid_t dom,
-                                            ioservid_t ioservid)
-{
-}
-
-static inline int xen_get_ioreq_server_info(domid_t dom,
-                                            ioservid_t ioservid,
-                                            xen_pfn_t *ioreq_pfn,
-                                            xen_pfn_t *bufioreq_pfn,
-                                            evtchn_port_t *bufioreq_evtchn)
-{
-    return xen_get_default_ioreq_server_info(dom, ioreq_pfn,
-                                             bufioreq_pfn,
-                                             bufioreq_evtchn);
-}
-
-static inline int xen_set_ioreq_server_state(domid_t dom,
-                                             ioservid_t ioservid,
-                                             bool enable)
-{
-    return 0;
-}
-
-/* Xen 4.5 */
-#else
-
 static bool use_default_ioreq_server;
 
 static inline void xen_map_memory_section(domid_t dom,
@@ -624,6 +521,4 @@ static inline int xen_set_ioreq_server_state(domid_t dom,
                                                  enable);
 }
 
-#endif
-
 #endif /* QEMU_HW_XEN_NATIVE_H */