TSS_ENTRY is a compile time constant, so HOST_TR_SELECTOR can be set up during
VMCS construction and left alone thereafter, rather than rewriting it on every
context switch.
Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
---
CC: Jan Beulich <jbeul...@suse.com>
CC: Wei Liu <wei.l...@citrix.com>
CC: Jun Nakajima <jun.nakaj...@intel.com>
CC: Kevin Tian <kevin.t...@intel.com>
---
xen/arch/x86/hvm/vmx/vmcs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/xen/arch/x86/hvm/vmx/vmcs.c b/xen/arch/x86/hvm/vmx/vmcs.c
index b5100b5..6042109 100644
--- a/xen/arch/x86/hvm/vmx/vmcs.c
+++ b/xen/arch/x86/hvm/vmx/vmcs.c
@@ -806,7 +806,6 @@ static void vmx_set_host_env(struct vcpu *v)
(unsigned long)(this_cpu(gdt_table) - FIRST_RESERVED_GDT_ENTRY));
__vmwrite(HOST_IDTR_BASE, (unsigned long)idt_tables[cpu]);
- __vmwrite(HOST_TR_SELECTOR, TSS_ENTRY << 3);
__vmwrite(HOST_TR_BASE, (unsigned long)&per_cpu(init_tss, cpu));
__vmwrite(HOST_SYSENTER_ESP, get_stack_bottom());
@@ -1144,6 +1143,7 @@ static int construct_vmcs(struct vcpu *v)
__vmwrite(HOST_GS_SELECTOR, 0);
__vmwrite(HOST_FS_BASE, 0);
__vmwrite(HOST_GS_BASE, 0);
+ __vmwrite(HOST_TR_SELECTOR, TSS_ENTRY << 3);
/* Host control registers. */
v->arch.hvm_vmx.host_cr0 = read_cr0() | X86_CR0_TS;
--
2.1.4
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