[Xen-devel] [PATCH] x86/sysctl: Hide hvm_directio if hvm is not available

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

If HVM support unavailable, advertising hvm_directio is misleading.

Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
CC: Jan Beulich <JBeulich@xxxxxxxx>
---
 xen/arch/x86/sysctl.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/xen/arch/x86/sysctl.c b/xen/arch/x86/sysctl.c
index 58cbd70..c440c93 100644
--- a/xen/arch/x86/sysctl.c
+++ b/xen/arch/x86/sysctl.c
@@ -77,9 +77,11 @@ void arch_do_physinfo(xen_sysctl_physinfo_t *pi)
     memcpy(pi->hw_cap, boot_cpu_data.x86_capability,
            min(sizeof(pi->hw_cap), sizeof(boot_cpu_data.x86_capability)));
     if ( hvm_enabled )
+    {
         pi->capabilities |= XEN_SYSCTL_PHYSCAP_hvm;
-    if ( iommu_enabled )
-        pi->capabilities |= XEN_SYSCTL_PHYSCAP_hvm_directio;
+        if ( iommu_enabled )
+            pi->capabilities |= XEN_SYSCTL_PHYSCAP_hvm_directio;
+    }
 }
 
 long arch_do_sysctl(
-- 
2.1.4


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