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Re: [Qemu-devel] [PATCH v4 2/7] Move CONFIG_KVM related definitions to k


From: Philippe Mathieu-Daudé
Subject: Re: [Qemu-devel] [PATCH v4 2/7] Move CONFIG_KVM related definitions to kvm_i386.h
Date: Mon, 26 Jun 2017 08:12:34 -0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.0

On 06/26/2017 02:22 AM, Thomas Huth wrote:
pc.h and sysemu/kvm.h are also included from common code (where
CONFIG_KVM is not available), so the #defines that depend on CONFIG_KVM
should not be declared here to avoid that anybody is using them in a
wrong way. Since we're also going to poison CONFIG_KVM for common code,
let's move them to kvm_i386.h instead. Most of the dummy definitions
from sysemu/kvm.h are also unused since the code that uses them is
only compiled for CONFIG_KVM (e.g. target/i386/kvm.c), so the unused
defines are also simply dropped here instead of being moved.

Signed-off-by: Thomas Huth <address@hidden>

Reviewed-by: Philippe Mathieu-Daudé <address@hidden>

---
  hw/i386/pc_q35.c       |  1 +
  include/hw/i386/pc.h   | 13 -------------
  include/sysemu/kvm.h   | 15 ---------------
  target/i386/kvm_i386.h | 23 +++++++++++++++++++++++
  4 files changed, 24 insertions(+), 28 deletions(-)

diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 1523ef3..8f696b7 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -36,6 +36,7 @@
  #include "hw/timer/mc146818rtc.h"
  #include "hw/xen/xen.h"
  #include "sysemu/kvm.h"
+#include "kvm_i386.h"
  #include "hw/kvm/clock.h"
  #include "hw/pci-host/q35.h"
  #include "exec/address-spaces.h"
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 233216a..f48d167 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -20,19 +20,6 @@
#define HPET_INTCAP "hpet-intcap" -#ifdef CONFIG_KVM
-#define kvm_pit_in_kernel() \
-    (kvm_irqchip_in_kernel() && !kvm_irqchip_is_split())
-#define kvm_pic_in_kernel()  \
-    (kvm_irqchip_in_kernel() && !kvm_irqchip_is_split())
-#define kvm_ioapic_in_kernel() \
-    (kvm_irqchip_in_kernel() && !kvm_irqchip_is_split())
-#else
-#define kvm_pit_in_kernel()      0
-#define kvm_pic_in_kernel()      0
-#define kvm_ioapic_in_kernel()   0
-#endif
-
  /**
   * PCMachineState:
   * @acpi_dev: link to ACPI PM device that performs ACPI hotplug handling
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index 1e91613..ca40b6e 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -22,21 +22,6 @@
  #ifdef CONFIG_KVM
  #include <linux/kvm.h>
  #include <linux/kvm_para.h>
-#else
-/* These constants must never be used at runtime if kvm_enabled() is false.
- * They exist so we don't need #ifdefs around KVM-specific code that already
- * checks kvm_enabled() properly.
- */
-#define KVM_CPUID_SIGNATURE      0
-#define KVM_CPUID_FEATURES       0
-#define KVM_FEATURE_CLOCKSOURCE  0
-#define KVM_FEATURE_NOP_IO_DELAY 0
-#define KVM_FEATURE_MMU_OP       0
-#define KVM_FEATURE_CLOCKSOURCE2 0
-#define KVM_FEATURE_ASYNC_PF     0
-#define KVM_FEATURE_STEAL_TIME   0
-#define KVM_FEATURE_PV_EOI       0
-#define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT 0
  #endif
extern bool kvm_allowed;
diff --git a/target/i386/kvm_i386.h b/target/i386/kvm_i386.h
index bfce427..1de9876 100644
--- a/target/i386/kvm_i386.h
+++ b/target/i386/kvm_i386.h
@@ -15,6 +15,29 @@
#define kvm_apic_in_kernel() (kvm_irqchip_in_kernel()) +#ifdef CONFIG_KVM
+
+#define kvm_pit_in_kernel() \
+    (kvm_irqchip_in_kernel() && !kvm_irqchip_is_split())
+#define kvm_pic_in_kernel()  \
+    (kvm_irqchip_in_kernel() && !kvm_irqchip_is_split())
+#define kvm_ioapic_in_kernel() \
+    (kvm_irqchip_in_kernel() && !kvm_irqchip_is_split())
+
+#else
+
+#define kvm_pit_in_kernel()      0
+#define kvm_pic_in_kernel()      0
+#define kvm_ioapic_in_kernel()   0
+
+/* These constants must never be used at runtime if kvm_enabled() is false.
+ * They exist so we don't need #ifdefs around KVM-specific code that already
+ * checks kvm_enabled() properly.
+ */
+#define KVM_CPUID_FEATURES       0
+
+#endif  /* CONFIG_KVM */
+
  bool kvm_allows_irq0_override(void);
  bool kvm_has_smm(void);
  bool kvm_has_adjust_clock_stable(void);




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