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From 39ffb75b89ae1a1be6e6ed5c03d4c22cc640e832 Mon Sep 17 00:00:00 2001
From: Eduardo Habkost <ehabkost@redhat.com>
Date: Thu, 25 Jun 2015 19:31:22 +0200
Subject: [PATCH 02/10] target-i386: fix cpuid leaf 0x0d

Message-id: <1435260689-9556-2-git-send-email-ehabkost@redhat.com>
Patchwork-id: 66499
O-Subject: [RHEL-7.2 qemu-kvm PATCH 1/8] target-i386: fix cpuid leaf 0x0d
Bugzilla: 1233350
RH-Acked-by: Igor Mammedov <imammedo@redhat.com>
RH-Acked-by: Bandan Das <bsd@redhat.com>
RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>

From: Liu Jinsong <jinsong.liu@intel.com>

Fix cpuid leaf 0x0d which incorrectly parsed eax and ebx.

However, before this patch the CPUID worked fine -- the .offset
field contained the size _and_ was stored in the register that
is supposed to hold the size (eax), and likewise the .size field
contained the offset _and_ was stored in the register trhat is
supposed to hold the offset (ebx).

Signed-off-by: Liu Jinsong <jinsong.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit 33f373d7c56350fd2ec3e31f4f2c46cb49464911)
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 target-i386/cpu.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index b76719d..0fd100f 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -223,7 +223,7 @@ typedef struct ExtSaveArea {
 
 static const ExtSaveArea ext_save_areas[] = {
     [2] = { .feature = FEAT_1_ECX, .bits = CPUID_EXT_AVX,
-            .offset = 0x100, .size = 0x240 },
+            .offset = 0x240, .size = 0x100 },
 };
 
 const char *get_register_name_32(unsigned int reg)
@@ -2191,8 +2191,8 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
             const ExtSaveArea *esa = &ext_save_areas[count];
             if ((env->features[esa->feature] & esa->bits) == esa->bits &&
                 (kvm_mask & (1 << count)) != 0) {
-                *eax = esa->offset;
-                *ebx = esa->size;
+                *eax = esa->size;
+                *ebx = esa->offset;
             }
         }
         break;
-- 
1.8.3.1