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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>
This commit is contained in:
Juergen Gross 2017-04-12 08:20:29 +02:00
parent 0808e80cb7
commit 3ee99df333
1 changed files with 1 additions and 0 deletions
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arch/x86/xen/enlighten_pv.c
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@ -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)