[Xen-devel] [PATCH] x86/minios: Remove more vestigial remnants of SUPERVISOR_MODE_KERNEL

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

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.cooper3@xxxxxxxxxx>
CC: Keir Fraser <keir@xxxxxxx>
CC: Jan Beulich <JBeulich@xxxxxxxx>
CC: Tim Deegan <tim@xxxxxxx>
CC: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
CC: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>
---
 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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