[Xen-devel] [PATCH v1] x86/spec-ctrl: Remove EAGER_FPU when PV/HVM is disabled.

[Jin Nan Wang <jnwang@xxxxxxxx>]

In commit ac3f9a72141a48d40fabfff561d5a7dc0e1b810d:
    For one, "no-xen" should not imply "no-eager-fpu", as "eager FPU" mode
    is to guard guests, not Xen itself, which is also expressed so by
    print_details().

So when spec-ctrl=pv=off,hvm=off;  EAGER_FPU shouldn't be display in lines:
Current[Wrong]:
(XEN)   Support for HVM VMs: EAGER_FPU MD_CLEAR
(XEN)   Support for PV VMs: EAGER_FPU MD_CLEAR

expectation:
(XEN)   Support for HVM VMs: MD_CLEAR
(XEN)   Support for PV VMs: MD_CLEAR
---
 xen/arch/x86/spec_ctrl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/xen/arch/x86/spec_ctrl.c b/xen/arch/x86/spec_ctrl.c
index 468a847598..5f519406fb 100644
--- a/xen/arch/x86/spec_ctrl.c
+++ b/xen/arch/x86/spec_ctrl.c
@@ -128,12 +128,14 @@ static int __init parse_spec_ctrl(const char *s)
             opt_msr_sc_pv = val;
             opt_rsb_pv = val;
             opt_md_clear_pv = val;
+            opt_eager_fpu = val;
         }
         else if ( (val = parse_boolean("hvm", s, ss)) >= 0 )
         {
             opt_msr_sc_hvm = val;
             opt_rsb_hvm = val;
             opt_md_clear_hvm = val;
+            opt_eager_fpu = val;
         }
         else if ( (val = parse_boolean("msr-sc", s, ss)) >= 0 )
         {
-- 
2.22.0


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