[Xen-devel] [PATCH v3 02/11] x86/xen: don't indicate DCA support in pv domains

[Juergen Gross <jgross@xxxxxxxx>]

Xen doesn't support DCA (direct cache access) for pv domains. Clear
the corresponding capability indicator.

Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
---
 arch/x86/xen/enlighten_pv.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c
index 6dc922e3848a..bd69868909b4 100644
--- a/arch/x86/xen/enlighten_pv.c
+++ b/arch/x86/xen/enlighten_pv.c
@@ -331,6 +331,7 @@ static void __init xen_init_capabilities(void)
 {
        setup_clear_cpu_cap(X86_BUG_SYSRET_SS_ATTRS);
        setup_force_cpu_cap(X86_FEATURE_XENPV);
+       setup_clear_cpu_cap(X86_FEATURE_DCA);
 }
 
 static void xen_set_debugreg(int reg, unsigned long val)
-- 
2.12.0


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