Commit 3ee99df3 authored Apr 12, 2017 by Juergen Gross

x86/xen: don't indicate DCA support in pv domains



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

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>

parent 0808e80c

arch/x86/xen/enlighten_pv.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -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)

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