MiniOS has never advertised support for supervisor_mode_kernel, and the
feature was only ever implemented for 32bit Xen.
Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
CC: Keir Fraser <k...@xen.org>
CC: Jan Beulich <jbeul...@suse.com>
CC: Tim Deegan <t...@xen.org>
CC: Stefano Stabellini <stefano.stabell...@eu.citrix.com>
CC: Samuel Thibault <samuel.thiba...@ens-lyon.org>
---
extras/mini-os/arch/x86/x86_64.S | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/extras/mini-os/arch/x86/x86_64.S b/extras/mini-os/arch/x86/x86_64.S
index df3469e..72921b1 100644
--- a/extras/mini-os/arch/x86/x86_64.S
+++ b/extras/mini-os/arch/x86/x86_64.S
@@ -125,13 +125,10 @@ KERNEL_CS_MASK = 0xfc
testl $NMI_MASK,2*8(%rsp)
jnz 2f
- testb $1,(xen_features+XENFEAT_supervisor_mode_kernel)
- jnz 1f
-
/* Direct iret to kernel space. Correct CS and SS. */
orb $3,1*8(%rsp)
orb $3,4*8(%rsp)
-1: iretq
+ iretq
2: /* Slow iret via hypervisor. */
andl $~NMI_MASK, 16(%rsp)
--
1.7.10.4
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