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From: Yang Weijiang <weijiang.yang@intel.com>
To: pbonzini@redhat.com, seanjc@google.com, qemu-devel@nongnu.org
Cc: Yang Weijiang <weijiang.yang@intel.com>
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	[thread overview]
Message-ID: <20210113090430.26394-1-weijiang.yang@intel.com> (raw)

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 **errp)
                 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 &&
-- 
2.17.2



             reply	other threads:[~2021-01-13  8:54 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-13  9:04 Yang Weijiang [this message]
2021-01-13 10:06 ` [Qemu-devel][PATCH] x86/cpu: Use max host physical address if -cpu max option is applied Paolo Bonzini
2021-01-13 15:04   ` Yang Weijiang
2021-01-13 15:41     ` Paolo Bonzini
2021-01-24 21:08 ` Nathan Chancellor
2021-01-25  5:41   ` Yang Weijiang
2021-01-25  7:10     ` Nathan Chancellor
2021-01-25 10:42       ` Paolo Bonzini
2021-01-25 18:19         ` Nathan Chancellor

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