qemu-kvm/SOURCES/kvm-target-ppc-Factor-out-the-parsing-in-kvmppc_get_cpu_.patch

From e4af250e57428a1a29b8f18c4ceaeb6be3d1eff6 Mon Sep 17 00:00:00 2001
From: Suraj Jitindar Singh <sursingh@redhat.com>
Date: Thu, 21 Jun 2018 06:56:47 +0200
Subject: [PATCH 060/268] target/ppc: Factor out the parsing in
 kvmppc_get_cpu_characteristics()

RH-Author: Suraj Jitindar Singh <sursingh@redhat.com>
Message-id: <1529564209-30369-2-git-send-email-sursingh@redhat.com>
Patchwork-id: 80927
O-Subject: [RHEL-7.6 qemu-kvm-rhev PATCH 1/3] target/ppc: Factor out the parsing in kvmppc_get_cpu_characteristics()
Bugzilla: 1560847
RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
RH-Acked-by: David Gibson <dgibson@redhat.com>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>

From: Suraj Jitindar Singh <sjitindarsingh@gmail.com>

Factor out the parsing of struct kvm_ppc_cpu_char in
kvmppc_get_cpu_characteristics() into a separate function for each cap
for simplicity.

Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
(cherry picked from commit 8fea70440eb0d095442de7e80d586a285cf96be5)

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1560847

Signed-off-by: Suraj Jitindar Singh <sursingh@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 target/ppc/kvm.c | 59 +++++++++++++++++++++++++++++++++++++-------------------
 1 file changed, 39 insertions(+), 20 deletions(-)

diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c
index 79a436a..d787032 100644
--- a/target/ppc/kvm.c
+++ b/target/ppc/kvm.c
@@ -2461,6 +2461,41 @@ bool kvmppc_has_cap_mmu_hash_v3(void)
     return cap_mmu_hash_v3;
 }
 
+static int parse_cap_ppc_safe_cache(struct kvm_ppc_cpu_char c)
+{
+    if (~c.behaviour & c.behaviour_mask & H_CPU_BEHAV_L1D_FLUSH_PR) {
+        return 2;
+    } else if ((c.character & c.character_mask & H_CPU_CHAR_L1D_THREAD_PRIV) &&
+               (c.character & c.character_mask
+                & (H_CPU_CHAR_L1D_FLUSH_ORI30 | H_CPU_CHAR_L1D_FLUSH_TRIG2))) {
+        return 1;
+    }
+
+    return 0;
+}
+
+static int parse_cap_ppc_safe_bounds_check(struct kvm_ppc_cpu_char c)
+{
+    if (~c.behaviour & c.behaviour_mask & H_CPU_BEHAV_BNDS_CHK_SPEC_BAR) {
+        return 2;
+    } else if (c.character & c.character_mask & H_CPU_CHAR_SPEC_BAR_ORI31) {
+        return 1;
+    }
+
+    return 0;
+}
+
+static int parse_cap_ppc_safe_indirect_branch(struct kvm_ppc_cpu_char c)
+{
+    if (c.character & c.character_mask & H_CPU_CHAR_CACHE_COUNT_DIS) {
+        return  SPAPR_CAP_FIXED_CCD;
+    } else if (c.character & c.character_mask & H_CPU_CHAR_BCCTRL_SERIALISED) {
+        return SPAPR_CAP_FIXED_IBS;
+    }
+
+    return 0;
+}
+
 static void kvmppc_get_cpu_characteristics(KVMState *s)
 {
     struct kvm_ppc_cpu_char c;
@@ -2479,26 +2514,10 @@ static void kvmppc_get_cpu_characteristics(KVMState *s)
     if (ret < 0) {
         return;
     }
-    /* Parse and set cap_ppc_safe_cache */
-    if (~c.behaviour & c.behaviour_mask & H_CPU_BEHAV_L1D_FLUSH_PR) {
-        cap_ppc_safe_cache = 2;
-    } else if ((c.character & c.character_mask & H_CPU_CHAR_L1D_THREAD_PRIV) &&
-               (c.character & c.character_mask
-                & (H_CPU_CHAR_L1D_FLUSH_ORI30 | H_CPU_CHAR_L1D_FLUSH_TRIG2))) {
-        cap_ppc_safe_cache = 1;
-    }
-    /* Parse and set cap_ppc_safe_bounds_check */
-    if (~c.behaviour & c.behaviour_mask & H_CPU_BEHAV_BNDS_CHK_SPEC_BAR) {
-        cap_ppc_safe_bounds_check = 2;
-    } else if (c.character & c.character_mask & H_CPU_CHAR_SPEC_BAR_ORI31) {
-        cap_ppc_safe_bounds_check = 1;
-    }
-    /* Parse and set cap_ppc_safe_indirect_branch */
-    if (c.character & c.character_mask & H_CPU_CHAR_CACHE_COUNT_DIS) {
-        cap_ppc_safe_indirect_branch = SPAPR_CAP_FIXED_CCD;
-    } else if (c.character & c.character_mask & H_CPU_CHAR_BCCTRL_SERIALISED) {
-        cap_ppc_safe_indirect_branch = SPAPR_CAP_FIXED_IBS;
-    }
+
+    cap_ppc_safe_cache = parse_cap_ppc_safe_cache(c);
+    cap_ppc_safe_bounds_check = parse_cap_ppc_safe_bounds_check(c);
+    cap_ppc_safe_indirect_branch = parse_cap_ppc_safe_indirect_branch(c);
 }
 
 int kvmppc_get_cap_safe_cache(void)
-- 
1.8.3.1