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target/ppc: Factor out the parsing in kvmppc_get_cpu_characteristics()

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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>
This commit is contained in:
Suraj Jitindar Singh 2018-05-11 16:25:07 +10:00 • committed by David Gibson
parent 7cb00357c1
commit 8fea70440e
1 changed files with 39 additions and 20 deletions
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59
target/ppc/kvm.c
View file

@ -2412,6 +2412,41 @@ bool kvmppc_has_cap_mmu_hash_v3(void)
return cap_mmu_hash_v3; 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) static void kvmppc_get_cpu_characteristics(KVMState *s)
{ {
struct kvm_ppc_cpu_char c; struct kvm_ppc_cpu_char c;
@ -2430,26 +2465,10 @@ static void kvmppc_get_cpu_characteristics(KVMState *s)
if (ret < 0) { if (ret < 0) {
return; return;
} }
/* Parse and set cap_ppc_safe_cache */
if (~c.behaviour & c.behaviour_mask & H_CPU_BEHAV_L1D_FLUSH_PR) { cap_ppc_safe_cache = parse_cap_ppc_safe_cache(c);
cap_ppc_safe_cache = 2; cap_ppc_safe_bounds_check = parse_cap_ppc_safe_bounds_check(c);
} else if ((c.character & c.character_mask & H_CPU_CHAR_L1D_THREAD_PRIV) && cap_ppc_safe_indirect_branch = parse_cap_ppc_safe_indirect_branch(c);
(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;
}
} }
int kvmppc_get_cap_safe_cache(void) int kvmppc_get_cap_safe_cache(void)