[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] [PATCH 3/5] xen: drop XenXC and associated interface wrappers



On Tue, 9 Feb 2016, Ian Campbell wrote:
> Now that 4.2 and earlier are no longer supported "xc_interface *" is
> always the right type for the xc interface handle.
> 
> Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>

Please mention in the commit message the changes to xenforeignmemory
related functions and handles.

Reviewed-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>


>  hw/xen/xen_backend.c         |  4 +--
>  include/hw/xen/xen_backend.h |  2 +-
>  include/hw/xen/xen_common.h  | 82 
> +++++++++++++++++---------------------------
>  xen-common.c                 |  4 +--
>  xen-hvm.c                    | 16 ++++-----
>  5 files changed, 44 insertions(+), 64 deletions(-)
> 
> diff --git a/hw/xen/xen_backend.c b/hw/xen/xen_backend.c
> index ef7843f..60575ad 100644
> --- a/hw/xen/xen_backend.c
> +++ b/hw/xen/xen_backend.c
> @@ -36,7 +36,7 @@
>  /* ------------------------------------------------------------- */
>  
>  /* public */
> -XenXC xen_xc = XC_HANDLER_INITIAL_VALUE;
> +xc_interface *xen_xc = NULL;
>  xenforeignmemory_handle *xen_fmem = NULL;
>  struct xs_handle *xenstore = NULL;
>  const char *xen_protocol;
> @@ -710,7 +710,7 @@ int xen_be_init(void)
>  
>      qemu_set_fd_handler(xs_fileno(xenstore), xenstore_update, NULL, NULL);
>  
> -    if (xen_xc == XC_HANDLER_INITIAL_VALUE || xen_fmem == NULL) {
> +    if (xen_xc == NULL || xen_fmem == NULL) {
>          /* Check if xen_init() have been called */
>          goto err;
>      }
> diff --git a/include/hw/xen/xen_backend.h b/include/hw/xen/xen_backend.h
> index e0d52ee..c839eeb 100644
> --- a/include/hw/xen/xen_backend.h
> +++ b/include/hw/xen/xen_backend.h
> @@ -56,7 +56,7 @@ struct XenDevice {
>  /* ------------------------------------------------------------- */
>  
>  /* variables */
> -extern XenXC xen_xc;
> +extern xc_interface *xen_xc;
>  extern xenforeignmemory_handle *xen_fmem;
>  extern struct xs_handle *xenstore;
>  extern const char *xen_protocol;
> diff --git a/include/hw/xen/xen_common.h b/include/hw/xen/xen_common.h
> index ec3ca56..254ef14 100644
> --- a/include/hw/xen/xen_common.h
> +++ b/include/hw/xen/xen_common.h
> @@ -32,14 +32,10 @@
>  /* Xen 4.2 thru 4.6 */
>  #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 471
>  
> -typedef xc_interface *XenXC;
> -typedef xc_interface *xenforeignmemory_handle;
> +typedef xc_interface xenforeignmemory_handle;
>  typedef xc_evtchn xenevtchn_handle;
>  typedef xc_gnttab xengnttab_handle;
>  
> -#  define XC_INTERFACE_FMT "%p"
> -#  define XC_HANDLER_INITIAL_VALUE    NULL
> -
>  #define xenevtchn_open(l, f) xc_evtchn_open(l, f);
>  #define xenevtchn_close(h) xc_evtchn_close(h)
>  #define xenevtchn_fd(h) xc_evtchn_fd(h)
> @@ -57,30 +53,14 @@ typedef xc_gnttab xengnttab_handle;
>  #define xengnttab_map_grant_refs(h, c, d, r, p) \
>      xc_gnttab_map_grant_refs(h, c, d, r, p)
>  
> -static inline XenXC xen_xc_interface_open(void *logger, void 
> *dombuild_logger,
> -                                          unsigned int open_flags)
> -{
> -    return xc_interface_open(logger, dombuild_logger, open_flags);
> -}
> -
>  /* See below for xenforeignmemory_* APIs */
>  
>  #else /* CONFIG_XEN_CTRL_INTERFACE_VERSION >= 471 */
>  
> -typedef xc_interface *XenXC;
> -
> -#  define XC_INTERFACE_FMT "%p"
> -#  define XC_HANDLER_INITIAL_VALUE    NULL
> -
>  #include <xenevtchn.h>
>  #include <xengnttab.h>
>  #include <xenforeignmemory.h>
>  
> -static inline XenXC xen_xc_interface_open(void *logger, void 
> *dombuild_logger,
> -                                          unsigned int open_flags)
> -{
> -    return xc_interface_open(logger, dombuild_logger, open_flags);
> -}
>  #endif
>  
>  void destroy_hvm_domain(bool reboot);
> @@ -89,7 +69,7 @@ void destroy_hvm_domain(bool reboot);
>  void xen_shutdown_fatal_error(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
>  
>  #ifdef HVM_PARAM_VMPORT_REGS_PFN
> -static inline int xen_get_vmport_regs_pfn(XenXC xc, domid_t dom,
> +static inline int xen_get_vmport_regs_pfn(xc_interface *xc, domid_t dom,
>                                            xen_pfn_t *vmport_regs_pfn)
>  {
>      int rc;
> @@ -101,7 +81,7 @@ static inline int xen_get_vmport_regs_pfn(XenXC xc, 
> domid_t dom,
>      return rc;
>  }
>  #else
> -static inline int xen_get_vmport_regs_pfn(XenXC xc, domid_t dom,
> +static inline int xen_get_vmport_regs_pfn(xc_interface *xc, domid_t dom,
>                                            xen_pfn_t *vmport_regs_pfn)
>  {
>      return -ENOSYS;
> @@ -128,54 +108,54 @@ static inline int xen_get_vmport_regs_pfn(XenXC xc, 
> domid_t dom,
>  
>  typedef uint16_t ioservid_t;
>  
> -static inline void xen_map_memory_section(XenXC xc, domid_t dom,
> +static inline void xen_map_memory_section(xc_interface *xc, domid_t dom,
>                                            ioservid_t ioservid,
>                                            MemoryRegionSection *section)
>  {
>  }
>  
> -static inline void xen_unmap_memory_section(XenXC xc, domid_t dom,
> +static inline void xen_unmap_memory_section(xc_interface *xc, domid_t dom,
>                                              ioservid_t ioservid,
>                                              MemoryRegionSection *section)
>  {
>  }
>  
> -static inline void xen_map_io_section(XenXC xc, domid_t dom,
> +static inline void xen_map_io_section(xc_interface *xc, domid_t dom,
>                                        ioservid_t ioservid,
>                                        MemoryRegionSection *section)
>  {
>  }
>  
> -static inline void xen_unmap_io_section(XenXC xc, domid_t dom,
> +static inline void xen_unmap_io_section(xc_interface *xc, domid_t dom,
>                                          ioservid_t ioservid,
>                                          MemoryRegionSection *section)
>  {
>  }
>  
> -static inline void xen_map_pcidev(XenXC xc, domid_t dom,
> +static inline void xen_map_pcidev(xc_interface *xc, domid_t dom,
>                                    ioservid_t ioservid,
>                                    PCIDevice *pci_dev)
>  {
>  }
>  
> -static inline void xen_unmap_pcidev(XenXC xc, domid_t dom,
> +static inline void xen_unmap_pcidev(xc_interface *xc, domid_t dom,
>                                      ioservid_t ioservid,
>                                      PCIDevice *pci_dev)
>  {
>  }
>  
> -static inline int xen_create_ioreq_server(XenXC xc, domid_t dom,
> +static inline int xen_create_ioreq_server(xc_interface *xc, domid_t dom,
>                                            ioservid_t *ioservid)
>  {
>      return 0;
>  }
>  
> -static inline void xen_destroy_ioreq_server(XenXC xc, domid_t dom,
> +static inline void xen_destroy_ioreq_server(xc_interface *xc, domid_t dom,
>                                              ioservid_t ioservid)
>  {
>  }
>  
> -static inline int xen_get_ioreq_server_info(XenXC xc, domid_t dom,
> +static inline int xen_get_ioreq_server_info(xc_interface *xc, domid_t dom,
>                                              ioservid_t ioservid,
>                                              xen_pfn_t *ioreq_pfn,
>                                              xen_pfn_t *bufioreq_pfn,
> @@ -212,7 +192,7 @@ static inline int xen_get_ioreq_server_info(XenXC xc, 
> domid_t dom,
>      return 0;
>  }
>  
> -static inline int xen_set_ioreq_server_state(XenXC xc, domid_t dom,
> +static inline int xen_set_ioreq_server_state(xc_interface *xc, domid_t dom,
>                                               ioservid_t ioservid,
>                                               bool enable)
>  {
> @@ -222,7 +202,7 @@ static inline int xen_set_ioreq_server_state(XenXC xc, 
> domid_t dom,
>  /* Xen 4.5 */
>  #else
>  
> -static inline void xen_map_memory_section(XenXC xc, domid_t dom,
> +static inline void xen_map_memory_section(xc_interface *xc, domid_t dom,
>                                            ioservid_t ioservid,
>                                            MemoryRegionSection *section)
>  {
> @@ -235,7 +215,7 @@ static inline void xen_map_memory_section(XenXC xc, 
> domid_t dom,
>                                          start_addr, end_addr);
>  }
>  
> -static inline void xen_unmap_memory_section(XenXC xc, domid_t dom,
> +static inline void xen_unmap_memory_section(xc_interface *xc, domid_t dom,
>                                              ioservid_t ioservid,
>                                              MemoryRegionSection *section)
>  {
> @@ -248,7 +228,7 @@ static inline void xen_unmap_memory_section(XenXC xc, 
> domid_t dom,
>                                              start_addr, end_addr);
>  }
>  
> -static inline void xen_map_io_section(XenXC xc, domid_t dom,
> +static inline void xen_map_io_section(xc_interface *xc, domid_t dom,
>                                        ioservid_t ioservid,
>                                        MemoryRegionSection *section)
>  {
> @@ -261,7 +241,7 @@ static inline void xen_map_io_section(XenXC xc, domid_t 
> dom,
>                                          start_addr, end_addr);
>  }
>  
> -static inline void xen_unmap_io_section(XenXC xc, domid_t dom,
> +static inline void xen_unmap_io_section(xc_interface *xc, domid_t dom,
>                                          ioservid_t ioservid,
>                                          MemoryRegionSection *section)
>  {
> @@ -274,7 +254,7 @@ static inline void xen_unmap_io_section(XenXC xc, domid_t 
> dom,
>                                              start_addr, end_addr);
>  }
>  
> -static inline void xen_map_pcidev(XenXC xc, domid_t dom,
> +static inline void xen_map_pcidev(xc_interface *xc, domid_t dom,
>                                    ioservid_t ioservid,
>                                    PCIDevice *pci_dev)
>  {
> @@ -286,7 +266,7 @@ static inline void xen_map_pcidev(XenXC xc, domid_t dom,
>                                        PCI_FUNC(pci_dev->devfn));
>  }
>  
> -static inline void xen_unmap_pcidev(XenXC xc, domid_t dom,
> +static inline void xen_unmap_pcidev(xc_interface *xc, domid_t dom,
>                                      ioservid_t ioservid,
>                                      PCIDevice *pci_dev)
>  {
> @@ -298,7 +278,7 @@ static inline void xen_unmap_pcidev(XenXC xc, domid_t dom,
>                                            PCI_FUNC(pci_dev->devfn));
>  }
>  
> -static inline int xen_create_ioreq_server(XenXC xc, domid_t dom,
> +static inline int xen_create_ioreq_server(xc_interface *xc, domid_t dom,
>                                            ioservid_t *ioservid)
>  {
>      int rc = xc_hvm_create_ioreq_server(xc, dom, 
> HVM_IOREQSRV_BUFIOREQ_ATOMIC,
> @@ -311,14 +291,14 @@ static inline int xen_create_ioreq_server(XenXC xc, 
> domid_t dom,
>      return rc;
>  }
>  
> -static inline void xen_destroy_ioreq_server(XenXC xc, domid_t dom,
> +static inline void xen_destroy_ioreq_server(xc_interface *xc, domid_t dom,
>                                              ioservid_t ioservid)
>  {
>      trace_xen_ioreq_server_destroy(ioservid);
>      xc_hvm_destroy_ioreq_server(xc, dom, ioservid);
>  }
>  
> -static inline int xen_get_ioreq_server_info(XenXC xc, domid_t dom,
> +static inline int xen_get_ioreq_server_info(xc_interface *xc, domid_t dom,
>                                              ioservid_t ioservid,
>                                              xen_pfn_t *ioreq_pfn,
>                                              xen_pfn_t *bufioreq_pfn,
> @@ -329,7 +309,7 @@ static inline int xen_get_ioreq_server_info(XenXC xc, 
> domid_t dom,
>                                          bufioreq_evtchn);
>  }
>  
> -static inline int xen_set_ioreq_server_state(XenXC xc, domid_t dom,
> +static inline int xen_set_ioreq_server_state(xc_interface *xc, domid_t dom,
>                                               ioservid_t ioservid,
>                                               bool enable)
>  {
> @@ -340,7 +320,7 @@ static inline int xen_set_ioreq_server_state(XenXC xc, 
> domid_t dom,
>  #endif
>  
>  #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 460
> -static inline int xen_xc_domain_add_to_physmap(XenXC xch, uint32_t domid,
> +static inline int xen_xc_domain_add_to_physmap(xc_interface *xch, uint32_t 
> domid,
>                                                 unsigned int space,
>                                                 unsigned long idx,
>                                                 xen_pfn_t gpfn)
> @@ -348,7 +328,7 @@ static inline int xen_xc_domain_add_to_physmap(XenXC xch, 
> uint32_t domid,
>      return xc_domain_add_to_physmap(xch, domid, space, idx, gpfn);
>  }
>  #else
> -static inline int xen_xc_domain_add_to_physmap(XenXC xch, uint32_t domid,
> +static inline int xen_xc_domain_add_to_physmap(xc_interface *xch, uint32_t 
> domid,
>                                                 unsigned int space,
>                                                 unsigned long idx,
>                                                 xen_pfn_t gpfn)
> @@ -363,14 +343,14 @@ static inline int xen_xc_domain_add_to_physmap(XenXC 
> xch, uint32_t domid,
>  
>  #ifdef CONFIG_XEN_PV_DOMAIN_BUILD
>  #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 470
> -static inline int xen_domain_create(XenXC xc, uint32_t ssidref,
> +static inline int xen_domain_create(xc_interface *xc, uint32_t ssidref,
>                                      xen_domain_handle_t handle, uint32_t 
> flags,
>                                      uint32_t *pdomid)
>  {
>      return xc_domain_create(xc, ssidref, handle, flags, pdomid);
>  }
>  #else
> -static inline int xen_domain_create(XenXC xc, uint32_t ssidref,
> +static inline int xen_domain_create(xc_interface *xc, uint32_t ssidref,
>                                      xen_domain_handle_t handle, uint32_t 
> flags,
>                                      uint32_t *pdomid)
>  {
> @@ -381,17 +361,17 @@ static inline int xen_domain_create(XenXC xc, uint32_t 
> ssidref,
>  
>  #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 471
>  
> -#define xenforeignmemory_open(l, f) &xen_xc
> +#define xenforeignmemory_open(l, f) xen_xc
>  
> -static inline void *xenforeignmemory_map(XenXC *h, uint32_t dom,
> +static inline void *xenforeignmemory_map(xc_interface *h, uint32_t dom,
>                                           int prot, size_t pages,
>                                           const xen_pfn_t arr[/*pages*/],
>                                           int err[/*pages*/])
>  {
>      if (err)
> -        return xc_map_foreign_bulk(*h, dom, prot, arr, err, pages);
> +        return xc_map_foreign_bulk(h, dom, prot, arr, err, pages);
>      else
> -        return xc_map_foreign_pages(*h, dom, prot, arr, pages);
> +        return xc_map_foreign_pages(h, dom, prot, arr, pages);
>  }
>  
>  #define xenforeignmemory_unmap(h, p, s) munmap(p, s * XC_PAGE_SIZE)
> diff --git a/xen-common.c b/xen-common.c
> index 4860b2e..e641ad1 100644
> --- a/xen-common.c
> +++ b/xen-common.c
> @@ -114,8 +114,8 @@ static void xen_change_state_handler(void *opaque, int 
> running,
>  
>  static int xen_init(MachineState *ms)
>  {
> -    xen_xc = xen_xc_interface_open(0, 0, 0);
> -    if (xen_xc == XC_HANDLER_INITIAL_VALUE) {
> +    xen_xc = xc_interface_open(0, 0, 0);
> +    if (xen_xc == NULL) {
>          xen_be_printf(NULL, 0, "can't open xen interface\n");
>          return -1;
>      }
> diff --git a/xen-hvm.c b/xen-hvm.c
> index 918cabc..fbe0e3a 100644
> --- a/xen-hvm.c
> +++ b/xen-hvm.c
> @@ -1224,7 +1224,7 @@ void xen_hvm_init(PCMachineState *pcms, MemoryRegion 
> **ram_memory)
>                                     &ioreq_pfn, &bufioreq_pfn,
>                                     &bufioreq_evtchn);
>      if (rc < 0) {
> -        error_report("failed to get ioreq server info: error %d handle=" 
> XC_INTERFACE_FMT,
> +        error_report("failed to get ioreq server info: error %d handle=%p",
>                       errno, xen_xc);
>          goto err;
>      }
> @@ -1237,7 +1237,7 @@ void xen_hvm_init(PCMachineState *pcms, MemoryRegion 
> **ram_memory)
>                                                PROT_READ|PROT_WRITE,
>                                                1, &ioreq_pfn, NULL);
>      if (state->shared_page == NULL) {
> -        error_report("map shared IO page returned error %d handle=" 
> XC_INTERFACE_FMT,
> +        error_report("map shared IO page returned error %d handle=%p",
>                       errno, xen_xc);
>          goto err;
>      }
> @@ -1249,8 +1249,8 @@ void xen_hvm_init(PCMachineState *pcms, MemoryRegion 
> **ram_memory)
>              xenforeignmemory_map(xen_fmem, xen_domid, PROT_READ|PROT_WRITE,
>                                   1, &ioreq_pfn, NULL);
>          if (state->shared_vmport_page == NULL) {
> -            error_report("map shared vmport IO page returned error %d 
> handle="
> -                         XC_INTERFACE_FMT, errno, xen_xc);
> +            error_report("map shared vmport IO page returned error %d 
> handle=%p",
> +                         errno, xen_xc);
>              goto err;
>          }
>      } else if (rc != -ENOSYS) {
> @@ -1272,7 +1272,7 @@ void xen_hvm_init(PCMachineState *pcms, MemoryRegion 
> **ram_memory)
>  
>      rc = xen_set_ioreq_server_state(xen_xc, xen_domid, state->ioservid, 
> true);
>      if (rc < 0) {
> -        error_report("failed to enable ioreq server info: error %d handle=" 
> XC_INTERFACE_FMT,
> +        error_report("failed to enable ioreq server info: error %d 
> handle=%p",
>                       errno, xen_xc);
>          goto err;
>      }
> @@ -1333,11 +1333,11 @@ err:
>  
>  void destroy_hvm_domain(bool reboot)
>  {
> -    XenXC xc_handle;
> +    xc_interface *xc_handle;
>      int sts;
>  
> -    xc_handle = xen_xc_interface_open(0, 0, 0);
> -    if (xc_handle == XC_HANDLER_INITIAL_VALUE) {
> +    xc_handle = xc_interface_open(0, 0, 0);
> +    if (xc_handle == NULL) {
>          fprintf(stderr, "Cannot acquire xenctrl handle\n");
>      } else {
>          sts = xc_domain_shutdown(xc_handle, xen_domid,
> -- 
> 2.1.4
> 

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel


 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.