[Xen-changelog] [xen staging] tools: Pass grant table limits to XEN_DOMCTL_set_gnttab_limits

[patchbot@xxxxxxx]

commit a903bf52335898adb2891b45c8baf2a70b912485
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Tue Feb 27 17:39:37 2018 +0000
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Fri Aug 31 12:06:53 2018 +0100

    tools: Pass grant table limits to XEN_DOMCTL_set_gnttab_limits
    
    XEN_DOMCTL_set_gnttab_limits is a fairly new hypercall, and is strictly
    mandatory.  As it pertains to domain limits, it should be provided at
    createdomain time.
    
    In preparation to remove the hypercall, extend xen_domctl_createdomain with
    the fields and arrange for all callers to pass appropriate details.  There 
is
    no change in construction behaviour yet, but later patches will rearrange 
the
    hypervisor internals, then delete the hypercall.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Daniel De Graaf <dgdegra@xxxxxxxxxxxxx>
    Acked-by: Christian Lindig <christian.lindig@xxxxxxxxxx>
    Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
 tools/helpers/init-xenstore-domain.c | 16 ++++++++++------
 tools/libxl/libxl_create.c           |  2 ++
 tools/ocaml/libs/xc/xenctrl.ml       |  2 ++
 tools/ocaml/libs/xc/xenctrl.mli      |  2 ++
 tools/ocaml/libs/xc/xenctrl_stubs.c  |  8 +++++++-
 tools/python/xen/lowlevel/xc/xc.c    |  2 ++
 xen/include/public/domctl.h          |  2 ++
 7 files changed, 27 insertions(+), 7 deletions(-)

diff --git a/tools/helpers/init-xenstore-domain.c 
b/tools/helpers/init-xenstore-domain.c
index 89c329c7c6..cd27edccb7 100644
--- a/tools/helpers/init-xenstore-domain.c
+++ b/tools/helpers/init-xenstore-domain.c
@@ -67,6 +67,14 @@ static int build(xc_interface *xch)
         .ssidref = SECINITSID_DOMU,
         .flags = XEN_DOMCTL_CDF_xs_domain,
         .max_evtchn_port = -1, /* No limit. */
+
+        /*
+         * 1 grant frame is enough: we don't need many grants.
+         * Mini-OS doesn't like less than 4, though, so use 4.
+         * 128 maptrack frames: 256 entries per frame, enough for 32768 
domains.
+         */
+        .max_grant_frames = 4,
+        .max_maptrack_frames = 128,
     };
 
     xs_fd = open("/dev/xen/xenbus_backend", O_RDWR);
@@ -104,12 +112,8 @@ static int build(xc_interface *xch)
         fprintf(stderr, "xc_domain_setmaxmem failed\n");
         goto err;
     }
-    /*
-     * 1 grant frame is enough: we don't need many grants.
-     * Mini-OS doesn't like less than 4, though, so use 4.
-     * 128 maptrack frames: 256 entries per frame, enough for 32768 domains.
-     */
-    rv = xc_domain_set_gnttab_limits(xch, domid, 4, 128);
+    rv = xc_domain_set_gnttab_limits(xch, domid, config.max_grant_frames,
+                                     config.max_maptrack_frames);
     if ( rv )
     {
         fprintf(stderr, "xc_domain_set_gnttab_limits failed\n");
diff --git a/tools/libxl/libxl_create.c b/tools/libxl/libxl_create.c
index b7b44e280b..8b755e412d 100644
--- a/tools/libxl/libxl_create.c
+++ b/tools/libxl/libxl_create.c
@@ -567,6 +567,8 @@ int libxl__domain_make(libxl__gc *gc, libxl_domain_config 
*d_config,
         struct xen_domctl_createdomain create = {
             .ssidref = info->ssidref,
             .max_evtchn_port = b_info->event_channels,
+            .max_grant_frames = b_info->max_grant_frames,
+            .max_maptrack_frames = b_info->max_maptrack_frames,
         };
 
         if (info->type != LIBXL_DOMAIN_TYPE_PV) {
diff --git a/tools/ocaml/libs/xc/xenctrl.ml b/tools/ocaml/libs/xc/xenctrl.ml
index 219355aefe..42f45c4b67 100644
--- a/tools/ocaml/libs/xc/xenctrl.ml
+++ b/tools/ocaml/libs/xc/xenctrl.ml
@@ -64,6 +64,8 @@ type domctl_create_config =
        handle: string;
        flags: domain_create_flag list;
        max_evtchn_port: int;
+       max_grant_frames: int;
+       max_maptrack_frames: int;
        arch: arch_domainconfig;
 }
 
diff --git a/tools/ocaml/libs/xc/xenctrl.mli b/tools/ocaml/libs/xc/xenctrl.mli
index c0c724b09d..0db58162d0 100644
--- a/tools/ocaml/libs/xc/xenctrl.mli
+++ b/tools/ocaml/libs/xc/xenctrl.mli
@@ -56,6 +56,8 @@ type domctl_create_config = {
   handle: string;
   flags: domain_create_flag list;
   max_evtchn_port: int;
+  max_grant_frames: int;
+  max_maptrack_frames: int;
   arch: arch_domainconfig;
 }
 
diff --git a/tools/ocaml/libs/xc/xenctrl_stubs.c 
b/tools/ocaml/libs/xc/xenctrl_stubs.c
index f8bdebadb1..1b5abd9f3a 100644
--- a/tools/ocaml/libs/xc/xenctrl_stubs.c
+++ b/tools/ocaml/libs/xc/xenctrl_stubs.c
@@ -129,13 +129,17 @@ CAMLprim value stub_xc_domain_create(value xch, value 
config)
 #define VAL_HANDLE              Field(config, 1)
 #define VAL_FLAGS               Field(config, 2)
 #define VAL_MAX_EVTCHN_PORT     Field(config, 3)
-#define VAL_ARCH                Field(config, 4)
+#define VAL_MAX_GRANT_FRAMES    Field(config, 4)
+#define VAL_MAX_MAPTRACK_FRAMES Field(config, 5)
+#define VAL_ARCH                Field(config, 6)
 
        uint32_t domid = 0;
        int result;
        struct xen_domctl_createdomain cfg = {
                .ssidref = Int32_val(VAL_SSIDREF),
                .max_evtchn_port = Int_val(VAL_MAX_EVTCHN_PORT),
+               .max_grant_frames = Int_val(VAL_MAX_GRANT_FRAMES),
+               .max_maptrack_frames = Int_val(VAL_MAX_MAPTRACK_FRAMES),
        };
 
        domain_handle_of_uuid_string(cfg.handle, String_val(VAL_HANDLE));
@@ -171,6 +175,8 @@ CAMLprim value stub_xc_domain_create(value xch, value 
config)
        }
 
 #undef VAL_ARCH
+#undef VAL_MAX_MAPTRACK_FRAMES
+#undef VAL_MAX_GRANT_FRAMES
 #undef VAL_MAX_EVTCHN_PORT
 #undef VAL_FLAGS
 #undef VAL_HANDLE
diff --git a/tools/python/xen/lowlevel/xc/xc.c 
b/tools/python/xen/lowlevel/xc/xc.c
index 4dc6d1ca1e..6bd58ecbcd 100644
--- a/tools/python/xen/lowlevel/xc/xc.c
+++ b/tools/python/xen/lowlevel/xc/xc.c
@@ -126,6 +126,8 @@ static PyObject *pyxc_domain_create(XcObject *self,
             0xde, 0xad, 0xbe, 0xef, 0xde, 0xad, 0xbe, 0xef,
         },
         .max_evtchn_port = -1, /* No limit. */
+        .max_grant_frames = 32,
+        .max_maptrack_frames = 1024,
     };
 
     static char *kwd_list[] = { "domid", "ssidref", "handle", "flags", 
"target", NULL };
diff --git a/xen/include/public/domctl.h b/xen/include/public/domctl.h
index 7fc07cce13..59baa52716 100644
--- a/xen/include/public/domctl.h
+++ b/xen/include/public/domctl.h
@@ -71,6 +71,8 @@ struct xen_domctl_createdomain {
      * mapping space, xenheap, etc) a guest may consume.
      */
     uint32_t max_evtchn_port;
+    uint32_t max_grant_frames;
+    uint32_t max_maptrack_frames;
 
     struct xen_arch_domainconfig arch;
 };
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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