[PATCH v4 13/27] target/i386/cpu: Remove CPUX86State::fill_mtrr_mask field

["Philippe Mathieu-Daudé" <philmd@linaro.org>]

The CPUX86State::fill_mtrr_mask boolean was only disabled
for the pc-q35-2.6 and pc-i440fx-2.6 machines, which got
removed. Being now always %true, we can remove it and simplify
kvm_get_msrs().

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 target/i386/cpu.h     |  3 ---
 target/i386/cpu.c     |  1 -
 target/i386/kvm/kvm.c | 10 +++-------
 3 files changed, 3 insertions(+), 11 deletions(-)

diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index 06817a31cf9..7585407da54 100644
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -2253,9 +2253,6 @@ struct ArchCPU {
     /* Enable auto level-increase for Intel Processor Trace leave */
     bool intel_pt_auto_level;
 
-    /* if true fill the top bits of the MTRR_PHYSMASKn variable range */
-    bool fill_mtrr_mask;
-
     /* if true override the phys_bits value with a value read from the host */
     bool host_phys_bits;
 
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 6fe37f71b1e..fb505d13122 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -8810,7 +8810,6 @@ static const Property x86_cpu_properties[] = {
     DEFINE_PROP_UINT32("guest-phys-bits", X86CPU, guest_phys_bits, -1),
     DEFINE_PROP_BOOL("host-phys-bits", X86CPU, host_phys_bits, false),
     DEFINE_PROP_UINT8("host-phys-bits-limit", X86CPU, host_phys_bits_limit, 0),
-    DEFINE_PROP_BOOL("fill-mtrr-mask", X86CPU, fill_mtrr_mask, true),
     DEFINE_PROP_UINT32("level-func7", X86CPU, env.cpuid_level_func7,
                        UINT32_MAX),
     DEFINE_PROP_UINT32("level", X86CPU, env.cpuid_level, UINT32_MAX),
diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c
index c9a3c02e3e3..87edce99e85 100644
--- a/target/i386/kvm/kvm.c
+++ b/target/i386/kvm/kvm.c
@@ -4635,13 +4635,9 @@ static int kvm_get_msrs(X86CPU *cpu)
      * we're migrating to.
      */
 
-    if (cpu->fill_mtrr_mask) {
-        QEMU_BUILD_BUG_ON(TARGET_PHYS_ADDR_SPACE_BITS > 52);
-        assert(cpu->phys_bits <= TARGET_PHYS_ADDR_SPACE_BITS);
-        mtrr_top_bits = MAKE_64BIT_MASK(cpu->phys_bits, 52 - cpu->phys_bits);
-    } else {
-        mtrr_top_bits = 0;
-    }
+    QEMU_BUILD_BUG_ON(TARGET_PHYS_ADDR_SPACE_BITS > 52);
+    assert(cpu->phys_bits <= TARGET_PHYS_ADDR_SPACE_BITS);
+    mtrr_top_bits = MAKE_64BIT_MASK(cpu->phys_bits, 52 - cpu->phys_bits);
 
     for (i = 0; i < ret; i++) {
         uint32_t index = msrs[i].index;
-- 
2.47.1