diff mbox series

[v2,for-4.14,2/2] tools/libxc: xc_memshr_fork with interrupts blocked

Message ID a903f59b9dc202114e06b7e4c7e0bb6e3fb588e9.1590165055.git.tamas.lengyel@intel.com (mailing list archive)
State Superseded
Headers show
Series [v2,for-4.14,1/2] x86/mem_sharing: block interrupt injection for forks | expand

Commit Message

Tamas K Lengyel May 22, 2020, 4:33 p.m. UTC 
Toolstack side for creating forks with interrupt injection blocked.

Signed-off-by: Tamas K Lengyel <tamas.lengyel@intel.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
---
 tools/libxc/include/xenctrl.h | 3 ++-
 tools/libxc/xc_memshr.c       | 4 +++-
 2 files changed, 5 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/tools/libxc/include/xenctrl.h b/tools/libxc/include/xenctrl.h
index 45ff7db1e8..804ff001d7 100644
--- a/tools/libxc/include/xenctrl.h
+++ b/tools/libxc/include/xenctrl.h
@@ -2242,7 +2242,8 @@  int xc_memshr_range_share(xc_interface *xch,
 int xc_memshr_fork(xc_interface *xch,
                    uint32_t source_domain,
                    uint32_t client_domain,
-                   bool allow_with_iommu);
+                   bool allow_with_iommu,
+                   bool block_interrupts);
 
 /*
  * Note: this function is only intended to be used on short-lived forks that
diff --git a/tools/libxc/xc_memshr.c b/tools/libxc/xc_memshr.c
index 2300cc7075..a6cfd7dccf 100644
--- a/tools/libxc/xc_memshr.c
+++ b/tools/libxc/xc_memshr.c
@@ -240,7 +240,7 @@  int xc_memshr_debug_gref(xc_interface *xch,
 }
 
 int xc_memshr_fork(xc_interface *xch, uint32_t pdomid, uint32_t domid,
-                   bool allow_with_iommu)
+                   bool allow_with_iommu, bool block_interrupts)
 {
     xen_mem_sharing_op_t mso;
 
@@ -251,6 +251,8 @@  int xc_memshr_fork(xc_interface *xch, uint32_t pdomid, uint32_t domid,
 
     if ( allow_with_iommu )
         mso.u.fork.flags |= XENMEM_FORK_WITH_IOMMU_ALLOWED;
+    if ( block_interrupts )
+        mso.u.fork.flags |= XENMEM_FORK_BLOCK_INTERRUPTS;
 
     return xc_memshr_memop(xch, domid, &mso);
 }