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From f9867a5df572d3b52fcd08b86878de9426354503 Mon Sep 17 00:00:00 2001
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From: Suraj Jitindar Singh <sursingh@redhat.com>
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Date: Thu, 21 Jun 2018 06:56:47 +0200
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Subject: [PATCH 52/54] target/ppc: Factor out the parsing in
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kvmppc_get_cpu_characteristics()
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RH-Author: Suraj Jitindar Singh <sursingh@redhat.com>
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Message-id: <1529564209-30369-2-git-send-email-sursingh@redhat.com>
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Patchwork-id: 80927
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O-Subject: [RHEL-7.6 qemu-kvm-rhev PATCH 1/3] target/ppc: Factor out the parsing in kvmppc_get_cpu_characteristics()
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Bugzilla: 1560847
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RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
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RH-Acked-by: David Gibson <dgibson@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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From: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
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Factor out the parsing of struct kvm_ppc_cpu_char in
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kvmppc_get_cpu_characteristics() into a separate function for each cap
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for simplicity.
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Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
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Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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(cherry picked from commit 8fea70440eb0d095442de7e80d586a285cf96be5)
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1560847
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Signed-off-by: Suraj Jitindar Singh <sursingh@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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target/ppc/kvm.c | 59 +++++++++++++++++++++++++++++++++++++-------------------
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1 file changed, 39 insertions(+), 20 deletions(-)
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diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c
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index 79a436a..d787032 100644
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--- a/target/ppc/kvm.c
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+++ b/target/ppc/kvm.c
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@@ -2461,6 +2461,41 @@ bool kvmppc_has_cap_mmu_hash_v3(void)
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return cap_mmu_hash_v3;
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}
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+static int parse_cap_ppc_safe_cache(struct kvm_ppc_cpu_char c)
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+{
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+ if (~c.behaviour & c.behaviour_mask & H_CPU_BEHAV_L1D_FLUSH_PR) {
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+ return 2;
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+ } else if ((c.character & c.character_mask & H_CPU_CHAR_L1D_THREAD_PRIV) &&
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+ (c.character & c.character_mask
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+ & (H_CPU_CHAR_L1D_FLUSH_ORI30 | H_CPU_CHAR_L1D_FLUSH_TRIG2))) {
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+ return 1;
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+ }
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+
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+ return 0;
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+}
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+
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+static int parse_cap_ppc_safe_bounds_check(struct kvm_ppc_cpu_char c)
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+{
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+ if (~c.behaviour & c.behaviour_mask & H_CPU_BEHAV_BNDS_CHK_SPEC_BAR) {
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+ return 2;
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+ } else if (c.character & c.character_mask & H_CPU_CHAR_SPEC_BAR_ORI31) {
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+ return 1;
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+ }
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+
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+ return 0;
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+}
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+
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+static int parse_cap_ppc_safe_indirect_branch(struct kvm_ppc_cpu_char c)
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+{
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+ if (c.character & c.character_mask & H_CPU_CHAR_CACHE_COUNT_DIS) {
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+ return SPAPR_CAP_FIXED_CCD;
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+ } else if (c.character & c.character_mask & H_CPU_CHAR_BCCTRL_SERIALISED) {
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+ return SPAPR_CAP_FIXED_IBS;
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+ }
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+
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+ return 0;
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+}
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+
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static void kvmppc_get_cpu_characteristics(KVMState *s)
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{
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struct kvm_ppc_cpu_char c;
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@@ -2479,26 +2514,10 @@ static void kvmppc_get_cpu_characteristics(KVMState *s)
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if (ret < 0) {
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return;
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}
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- /* Parse and set cap_ppc_safe_cache */
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- if (~c.behaviour & c.behaviour_mask & H_CPU_BEHAV_L1D_FLUSH_PR) {
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- cap_ppc_safe_cache = 2;
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- } else if ((c.character & c.character_mask & H_CPU_CHAR_L1D_THREAD_PRIV) &&
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- (c.character & c.character_mask
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- & (H_CPU_CHAR_L1D_FLUSH_ORI30 | H_CPU_CHAR_L1D_FLUSH_TRIG2))) {
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- cap_ppc_safe_cache = 1;
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- }
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- /* Parse and set cap_ppc_safe_bounds_check */
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- if (~c.behaviour & c.behaviour_mask & H_CPU_BEHAV_BNDS_CHK_SPEC_BAR) {
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- cap_ppc_safe_bounds_check = 2;
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- } else if (c.character & c.character_mask & H_CPU_CHAR_SPEC_BAR_ORI31) {
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- cap_ppc_safe_bounds_check = 1;
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- }
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- /* Parse and set cap_ppc_safe_indirect_branch */
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- if (c.character & c.character_mask & H_CPU_CHAR_CACHE_COUNT_DIS) {
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- cap_ppc_safe_indirect_branch = SPAPR_CAP_FIXED_CCD;
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- } else if (c.character & c.character_mask & H_CPU_CHAR_BCCTRL_SERIALISED) {
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- cap_ppc_safe_indirect_branch = SPAPR_CAP_FIXED_IBS;
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- }
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+
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+ cap_ppc_safe_cache = parse_cap_ppc_safe_cache(c);
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+ cap_ppc_safe_bounds_check = parse_cap_ppc_safe_bounds_check(c);
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+ cap_ppc_safe_indirect_branch = parse_cap_ppc_safe_indirect_branch(c);
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}
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int kvmppc_get_cap_safe_cache(void)
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--
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1.8.3.1
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