[PATCH v2 02/11] x86/xen: don't indicate DCA support in pv domains
From: Juergen Gross
Date: Thu Apr 13 2017 - 06:14:35 EST
Xen doesn't support DCA (direct cache access) for pv domains. Clear
the corresponding capability indicator.
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
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