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[Qemu-devel][PATCH] x86/cpu: Use max host physical address if -cpu max o

From: Yang Weijiang
Subject: [Qemu-devel][PATCH] x86/cpu: Use max host physical address if -cpu max option is applied
Date: Wed, 13 Jan 2021 17:04:30 +0800

QEMU option -cpu max(max_features) means "Enables all features supported by
the accelerator in the current host", this looks true for all the features
except guest max physical address width, so add this patch to enable it.

Signed-off-by: Yang Weijiang <weijiang.yang@intel.com>
 target/i386/cpu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 35459a38bb..b5943406f7 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -6673,7 +6673,7 @@ static void x86_cpu_realizefn(DeviceState *dev, Error 
                 warned = true;
-            if (cpu->host_phys_bits) {
+            if (cpu->host_phys_bits || cpu->max_features) {
                 /* The user asked for us to use the host physical bits */
                 cpu->phys_bits = host_phys_bits;
                 if (cpu->host_phys_bits_limit &&

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