whpx: i386: warn on unsupported MSR access instead of failing silently

Signed-off-by: Mohamed Mediouni <mohamed@unpredictable.fr>
Link: https://lore.kernel.org/r/20260228214704.19048-5-mohamed@unpredictable.fr
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

target/i386/whpx/whpx-all.c

@@ -1819,6 +1819,9 @@ int whpx_vcpu_run(CPUState *cpu)
             reg_count = vcpu->exit_ctx.MsrAccess.AccessInfo.IsWrite ?
                         1 : 3;
 
+            warn_report("WHPX: Unsupported MSR access (0x%x), IsWrite=%i", 
+                vcpu->exit_ctx.MsrAccess.MsrNumber, vcpu->exit_ctx.MsrAccess.AccessInfo.IsWrite);
+
             hr = whp_dispatch.WHvSetVirtualProcessorRegisters(
                 whpx->partition,
                 cpu->cpu_index,