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target-arm: Refactor CPU affinity handling

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Introduces reusable definitions for CPU affinity masks/shifts and gets rid
of hardcoded magic numbers.

Backports commit 0f4a9e45ec35811ee250ac232d84d3c6d4fcd7fc from qemu
This commit is contained in:
Lioncash 2018-02-15 11:04:41 -05:00
parent 02ace69c9d
commit 2a6b6c1082
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GPG key ID: 4E3C3CC1031BA9C7
2 changed files with 14 additions and 1 deletions
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13
qemu/target-arm/cpu-qom.h
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@ -223,6 +223,19 @@ void arm_gt_vtimer_cb(void *opaque);
void arm_gt_htimer_cb(void *opaque);
void arm_gt_stimer_cb(void *opaque);
#define ARM_AFF0_SHIFT 0
#define ARM_AFF0_MASK (0xFFULL << ARM_AFF0_SHIFT)
#define ARM_AFF1_SHIFT 8
#define ARM_AFF1_MASK (0xFFULL << ARM_AFF1_SHIFT)
#define ARM_AFF2_SHIFT 16
#define ARM_AFF2_MASK (0xFFULL << ARM_AFF2_SHIFT)
#define ARM_AFF3_SHIFT 32
#define ARM_AFF3_MASK (0xFFULL << ARM_AFF3_SHIFT)
#define ARM32_AFFINITY_MASK (ARM_AFF0_MASK|ARM_AFF1_MASK|ARM_AFF2_MASK)
#define ARM64_AFFINITY_MASK \
(ARM_AFF0_MASK|ARM_AFF1_MASK|ARM_AFF2_MASK|ARM_AFF3_MASK)
#ifdef TARGET_AARCH64
int aarch64_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg);
int aarch64_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);

2
qemu/target-arm/cpu.c
View file

@ -367,7 +367,7 @@ static void arm_cpu_initfn(struct uc_struct *uc, Object *obj, void *opaque)
*/
Aff1 = cs->cpu_index / ARM_CPUS_PER_CLUSTER;
Aff0 = cs->cpu_index % ARM_CPUS_PER_CLUSTER;
cpu->mp_affinity = (Aff1 << 8) | Aff0;
cpu->mp_affinity = (Aff1 << ARM_AFF1_SHIFT) | Aff0;
#if 0
#ifndef CONFIG_USER_ONLY