From bac058316df1831d185c5be01eaab656b091ca11 Mon Sep 17 00:00:00 2001 From: "awilliam@xenbuild.aw" Date: Mon, 27 Nov 2006 10:10:57 -0700 Subject: [PATCH] [IA64] Idle domain doesn't need to save and restore fph Signed-off-by: Anthony Xu --- xen/arch/ia64/xen/domain.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/xen/arch/ia64/xen/domain.c b/xen/arch/ia64/xen/domain.c index 3dede16491..11bd8b9fcf 100644 --- a/xen/arch/ia64/xen/domain.c +++ b/xen/arch/ia64/xen/domain.c @@ -164,8 +164,11 @@ void context_switch(struct vcpu *prev, struct vcpu *next) local_irq_save(spsr); - __ia64_save_fpu(prev->arch._thread.fph); - __ia64_load_fpu(next->arch._thread.fph); + if (!is_idle_domain(prev->domain)) + __ia64_save_fpu(prev->arch._thread.fph); + if (!is_idle_domain(next->domain)) + __ia64_load_fpu(next->arch._thread.fph); + if (VMX_DOMAIN(prev)) { vmx_save_state(prev); if (!VMX_DOMAIN(next)) { -- 2.30.2