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[Xen-devel] [PATCH v7 24/32] xen/x86: allow disabling all emulated devices inside of Xen



Only allow enabling or disabling all the emulated devices inside of Xen,
right now Xen doesn't support enabling specific emulated devices only.

Signed-off-by: Roger Pau Monnà <roger.pau@xxxxxxxxxx>
Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Cc: Jan Beulich <jbeulich@xxxxxxxx>
Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
Changes since v5:
 - Add Andrew Cooper Reviewed-by.
---
 xen/arch/x86/domain.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c
index 79182a4..a3b1c9b 100644
--- a/xen/arch/x86/domain.c
+++ b/xen/arch/x86/domain.c
@@ -526,7 +526,8 @@ int arch_domain_create(struct domain *d, unsigned int 
domcr_flags,
                d->domain_id, config->emulation_flags);
         return -EINVAL;
     }
-    if ( (is_hvm_domain(d) && config->emulation_flags != XEN_X86_EMU_ALL) ||
+    if ( (is_hvm_domain(d) && config->emulation_flags != XEN_X86_EMU_ALL &&
+         config->emulation_flags != 0) ||
          (is_pv_domain(d) && config->emulation_flags != 0) )
     {
         printk(XENLOG_G_ERR "d%d: Xen does not allow %s domain creation with "
-- 
1.9.5 (Apple Git-50.3)


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