[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 2/6] libxl: introduce a new structure to represent static shared memory regions
Add a new structure to the IDL famliy to represent static shared memory regions, as proposed in the proposal "Allow setting up shared memory areas between VMs from xl config file" (see [1]). [1] https://lists.xenproject.org/archives/html/xen-devel/2017-07/msg03047.html Signed-off-by: Zhongze Liu <blackskygg@xxxxxxxxx> Cc: Wei Liu <wei.liu2@xxxxxxxxxx> Cc: Ian Jackson <ian.jackson@xxxxxxxxxxxxx> Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx> Cc: Julien Grall <julien.grall@xxxxxxx> Cc: xen-devel@xxxxxxxxxxxxx --- tools/libxl/libxl.h | 4 ++++ tools/libxl/libxl_types.idl | 36 ++++++++++++++++++++++++++++++++---- 2 files changed, 36 insertions(+), 4 deletions(-) diff --git a/tools/libxl/libxl.h b/tools/libxl/libxl.h index 229e289750..3ee788642f 100644 --- a/tools/libxl/libxl.h +++ b/tools/libxl/libxl.h @@ -2237,6 +2237,10 @@ int libxl_fd_set_nonblock(libxl_ctx *ctx, int fd, int nonblock); int libxl_qemu_monitor_command(libxl_ctx *ctx, uint32_t domid, const char *command_line, char **output); +/* Constants for libxl_static_shm */ +#define LIBXL_SSHM_RANGE_UNKNOWN UINT64_MAX +#define LIBXL_SSHM_ID_MAXLEN 128 + #include <libxl_event.h> #endif /* LIBXL_H */ diff --git a/tools/libxl/libxl_types.idl b/tools/libxl/libxl_types.idl index 6e80d36256..6c9e79c05d 100644 --- a/tools/libxl/libxl_types.idl +++ b/tools/libxl/libxl_types.idl @@ -472,7 +472,7 @@ libxl_domain_build_info = Struct("domain_build_info",[ ("blkdev_start", string), ("vnuma_nodes", Array(libxl_vnode_info, "num_vnuma_nodes")), - + ("device_model_version", libxl_device_model_version), ("device_model_stubdomain", libxl_defbool), # if you set device_model you must set device_model_version too @@ -494,7 +494,7 @@ libxl_domain_build_info = Struct("domain_build_info",[ ("ioports", Array(libxl_ioport_range, "num_ioports")), ("irqs", Array(uint32, "num_irqs")), ("iomem", Array(libxl_iomem_range, "num_iomem")), - ("claim_mode", libxl_defbool), + ("claim_mode", libxl_defbool), ("event_channels", uint32), ("kernel", string), ("cmdline", string), @@ -543,10 +543,10 @@ libxl_domain_build_info = Struct("domain_build_info",[ ("keymap", string), ("sdl", libxl_sdl_info), ("spice", libxl_spice_info), - + ("gfx_passthru", libxl_defbool), ("gfx_passthru_kind", libxl_gfx_passthru_kind), - + ("serial", string), ("boot", string), ("usb", libxl_defbool), @@ -779,6 +779,33 @@ libxl_device_channel = Struct("device_channel", [ ])), ]) +libxl_sshm_cachepolicy = Enumeration("sshm_cachepolicy", [ + (-1, "UNKNOWN"), + (0, "ARM_NORMAL"), # ARM policies should be < 32 + (32, "X86_NORMAL"), # X86 policies should be >= 32 + ], init_val = "LIBXL_SSHM_CHCHE_POLICY_UNKNOWN") + +libxl_sshm_prot = Enumeration("sshm_prot", [ + (-1, "UNKNOWN"), + (3, "RW"), + ], init_val = "LIBXL_SSHM_PROT_UNKNOWN") + +libxl_sshm_role = Enumeration("sshm_role", [ + (-1, "UNKNOWN"), + (0, "MASTER"), + (1, "SLAVE"), + ], init_val = "LIBXL_SSHM_ROLE_UNKNOWN") + +libxl_static_shm = Struct("static_shm", [ + ("id", string), + ("offset", uint64, {'init_val': 'LIBXL_SSHM_RANGE_UNKNOWN'}), + ("begin", uint64, {'init_val': 'LIBXL_SSHM_RANGE_UNKNOWN'}), + ("end", uint64, {'init_val': 'LIBXL_SSHM_RANGE_UNKNOWN'}), + ("prot", libxl_sshm_prot, {'init_val': 'LIBXL_SSHM_PROT_UNKNOWN'}), + ("cache_policy", libxl_sshm_cachepolicy, {'init_val': 'LIBXL_SSHM_CACHEPOLICY_UNKNOWN'}), + ("role", libxl_sshm_role, {'init_val': 'LIBXL_SSHM_ROLE_UNKNOWN'}), +]) + libxl_domain_config = Struct("domain_config", [ ("c_info", libxl_domain_create_info), ("b_info", libxl_domain_build_info), @@ -797,6 +824,7 @@ libxl_domain_config = Struct("domain_config", [ ("channels", Array(libxl_device_channel, "num_channels")), ("usbctrls", Array(libxl_device_usbctrl, "num_usbctrls")), ("usbdevs", Array(libxl_device_usbdev, "num_usbdevs")), + ("sshms", Array(libxl_static_shm, "num_sshms")), ("on_poweroff", libxl_action_on_shutdown), ("on_reboot", libxl_action_on_shutdown), -- 2.14.0 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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