[PULL,10/49] i386/cpu: Drop the check of phys_bits in host_cpu_realizefn()

Commit Message

Paolo Bonzini Oct. 31, 2024, 5:51 p.m. UTC

From: Xiaoyao Li <[e-mail]>

The check of cpu->phys_bits to be in range between
[32, TARGET_PHYS_ADDR_SPACE_BITS] in host_cpu_realizefn()
is duplicated with check in x86_cpu_realizefn().

Since the ckeck in x86_cpu_realizefn() is called later and can cover all
the x86 cases. Remove the one in host_cpu_realizefn().

Opportunistically adjust cpu->phys_bits directly in
host_cpu_adjust_phys_bits(), which matches more with the function name.

Signed-off-by: Xiaoyao Li <[e-mail]>
Reviewed-by: Igor Mammedov <[e-mail]>
Reviewed-by: Zhao Liu <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Paolo Bonzini <[e-mail]>
---
 target/i386/host-cpu.c | 16 +++-------------
 1 file changed, 3 insertions(+), 13 deletions(-)

Patch

diff --git a/target/i386/host-cpu.c b/target/i386/host-cpu.c
index 8b8bf5afecc..03b9d1b169a 100644
--- a/target/i386/host-cpu.c
+++ b/target/i386/host-cpu.c
@@ -42,7 +42,7 @@  static uint32_t host_cpu_phys_bits(void)
     return host_phys_bits;
 }
 
-static uint32_t host_cpu_adjust_phys_bits(X86CPU *cpu)
+static void host_cpu_adjust_phys_bits(X86CPU *cpu)
 {
     uint32_t host_phys_bits = host_cpu_phys_bits();
     uint32_t phys_bits = cpu->phys_bits;
@@ -66,7 +66,7 @@  static uint32_t host_cpu_adjust_phys_bits(X86CPU *cpu)
         }
     }
 
-    return phys_bits;
+    cpu->phys_bits = phys_bits;
 }
 
 bool host_cpu_realizefn(CPUState *cs, Error **errp)
@@ -75,17 +75,7 @@  bool host_cpu_realizefn(CPUState *cs, Error **errp)
     CPUX86State *env = &cpu->env;
 
     if (env->features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM) {
-        uint32_t phys_bits = host_cpu_adjust_phys_bits(cpu);
-
-        if (phys_bits &&
-            (phys_bits > TARGET_PHYS_ADDR_SPACE_BITS ||
-             phys_bits < 32)) {
-            error_setg(errp, "phys-bits should be between 32 and %u "
-                       " (but is %u)",
-                       TARGET_PHYS_ADDR_SPACE_BITS, phys_bits);
-            return false;
-        }
-        cpu->phys_bits = phys_bits;
+        host_cpu_adjust_phys_bits(cpu);
     }
     return true;
 }