From: Andrew Cooper <andrew.cooper3@citrix.com>
Date: Wed, 4 Dec 2019 18:21:04 +0000 (+0000)
Subject: x86/vmx: Shrink TASK_SWITCH's hvm_task_switch_reason reasons[]
X-Git-Tag: archive/raspbian/4.14.0+80-gd101b417b7-1+rpi1^2~63^2~712
X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https:/%22bookmarks://%22Dat/%22http:/www.example.com/cgi/%22https:/%22bookmarks:/%22Dat?a=commitdiff_plain;h=4e9929f5bde62e19653a4c7f5792648f56ef35ab;p=xen.git

x86/vmx: Shrink TASK_SWITCH's hvm_task_switch_reason reasons[]

No need to use 4-byte integers to store two bits of information.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
---

diff --git a/xen/arch/x86/hvm/vmx/vmx.c b/xen/arch/x86/hvm/vmx/vmx.c
index 8debf6be3e..f6350daf4b 100644
--- a/xen/arch/x86/hvm/vmx/vmx.c
+++ b/xen/arch/x86/hvm/vmx/vmx.c
@@ -3979,7 +3979,7 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs)
         vmx_update_cpu_exec_control(v);
         break;
     case EXIT_REASON_TASK_SWITCH: {
-        static const enum hvm_task_switch_reason reasons[] = {
+        static const uint8_t reasons[] = {
             TSW_call_or_int, TSW_iret, TSW_jmp, TSW_call_or_int
         };
         unsigned int inst_len, source;