From: Mohamed Mediouni <mohamed@unpredictable.fr>
Date: Tue, 24 Mar 2026 15:13:18 +0000 (+0100)
Subject: whpx: i386: add implementation of new x86_emul_ops
X-Git-Tag: v11.0.0-rc2~16^2~9
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=e2a11aea4e6e4046f1686acaa07c16ef903989c9;p=thirdparty%2Fqemu.git

whpx: i386: add implementation of new x86_emul_ops

target/i386/emulate now has new ops for fetching whether the guest is in
protected mode, long mode or user mode without fetching control
registers.

Use those for faster vmexits.

Signed-off-by: Mohamed Mediouni <mohamed@unpredictable.fr>
Link: https://lore.kernel.org/r/20260324151323.74473-8-mohamed@unpredictable.fr
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---

diff --git a/target/i386/whpx/whpx-all.c b/target/i386/whpx/whpx-all.c
index 69d141e7cce..b97dc9fd514 100644
--- a/target/i386/whpx/whpx-all.c
+++ b/target/i386/whpx/whpx-all.c
@@ -885,10 +885,32 @@ static void read_segment_descriptor(CPUState *cpu,
     }
 }
 
+static bool is_protected_mode(CPUState *cpu)
+{
+    AccelCPUState *vcpu = cpu->accel;
+
+    return vcpu->exit_ctx.VpContext.ExecutionState.Cr0Pe == 1;
+}
+
+static bool is_long_mode(CPUState *cpu)
+{
+    AccelCPUState *vcpu = cpu->accel;
+
+    return vcpu->exit_ctx.VpContext.ExecutionState.EferLma == 1;
+}
+
+static bool is_user_mode(CPUState *cpu)
+{
+    AccelCPUState *vcpu = cpu->accel;
+    return vcpu->exit_ctx.VpContext.ExecutionState.Cpl == 3;
+}
 
 static const struct x86_emul_ops whpx_x86_emul_ops = {
     .read_segment_descriptor = read_segment_descriptor,
-    .handle_io = handle_io
+    .handle_io = handle_io,
+    .is_protected_mode = is_protected_mode,
+    .is_long_mode = is_long_mode,
+    .is_user_mode = is_user_mode
 };
 
 static void whpx_init_emu(void)