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[Xen-devel] [PATCH v6 21/29] 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 fe9504f..8fe95f7 100644
--- a/xen/arch/x86/domain.c
+++ b/xen/arch/x86/domain.c
@@ -568,7 +568,8 @@ int arch_domain_create(struct domain *d, unsigned int 
domcr_flags,
                    d->domain_id, config->emulation_flags);
             return -EINVAL;
         }
-        if ( config->emulation_flags != emulation_mask )
+        if ( config->emulation_flags != emulation_mask &&
+             config->emulation_flags != 0 )
         {
             printk(XENLOG_G_ERR "d%d: Xen does not allow HVM creation with the 
"
                    "current selection of emulators: %#x.\n", d->domain_id,
-- 
1.9.5 (Apple Git-50.3)


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