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[XEN v3 01/12] xen/Arm: vGICv3: Sysreg emulation is applicable for AArch64 only


  • To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
  • From: Ayan Kumar Halder <ayan.kumar.halder@xxxxxxx>
  • Date: Fri, 11 Nov 2022 14:17:28 +0000
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  • Delivery-date: Fri, 11 Nov 2022 14:17:58 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

Sysreg emulation is 64-bit specific, so guard the calls to
vgic_v3_emulate_sysreg() as well as the function itself with
"#ifdef CONFIG_ARM_64".

Signed-off-by: Ayan Kumar Halder <ayan.kumar.halder@xxxxxxx>
---

Changes from -
v1 - 1. Updated the commit message.

v2 - 1. Updated the commit message (removed the reference to Arm ARM as it is
not required).

 xen/arch/arm/vgic-v3.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/xen/arch/arm/vgic-v3.c b/xen/arch/arm/vgic-v3.c
index 015446be17..3f4509dcd3 100644
--- a/xen/arch/arm/vgic-v3.c
+++ b/xen/arch/arm/vgic-v3.c
@@ -1519,6 +1519,7 @@ static bool vgic_v3_emulate_sgi1r(struct cpu_user_regs 
*regs, uint64_t *r,
     }
 }
 
+#ifdef CONFIG_ARM_64
 static bool vgic_v3_emulate_sysreg(struct cpu_user_regs *regs, union hsr hsr)
 {
     struct hsr_sysreg sysreg = hsr.sysreg;
@@ -1539,6 +1540,7 @@ static bool vgic_v3_emulate_sysreg(struct cpu_user_regs 
*regs, union hsr hsr)
         return false;
     }
 }
+#endif
 
 static bool vgic_v3_emulate_cp64(struct cpu_user_regs *regs, union hsr hsr)
 {
@@ -1562,8 +1564,10 @@ static bool vgic_v3_emulate_reg(struct cpu_user_regs 
*regs, union hsr hsr)
 {
     switch (hsr.ec)
     {
+#ifdef CONFIG_ARM_64
     case HSR_EC_SYSREG:
         return vgic_v3_emulate_sysreg(regs, hsr);
+#endif
     case HSR_EC_CP15_64:
         return vgic_v3_emulate_cp64(regs, hsr);
     default:
-- 
2.17.1




 


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