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cleanup spin lock in vtd.c

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move dm_unit->lock into dmar_issue_qi_request

Tracked-On: #4958

Signed-off-by: Mingqiang Chi <mingqiang.chi@intel.com>
This commit is contained in:
Mingqiang Chi 2020-06-18 12:59:20 +08:00 committed by wenlingz
parent 67a7c355ec
commit ac65898f35
1 changed files with 4 additions and 12 deletions
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16
hypervisor/arch/x86/vtd.c
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@ -551,6 +551,8 @@ static void dmar_issue_qi_request(struct dmar_drhd_rt *dmar_unit, struct dmar_en
uint32_t qi_status = 0U; uint32_t qi_status = 0U;
uint64_t start; uint64_t start;
spinlock_obtain(&(dmar_unit->lock));
invalidate_desc_ptr = (struct dmar_entry *)(dmar_unit->qi_queue + dmar_unit->qi_tail); invalidate_desc_ptr = (struct dmar_entry *)(dmar_unit->qi_queue + dmar_unit->qi_tail);
invalidate_desc_ptr->hi_64 = invalidate_desc.hi_64; invalidate_desc_ptr->hi_64 = invalidate_desc.hi_64;
@ -574,6 +576,8 @@ static void dmar_issue_qi_request(struct dmar_drhd_rt *dmar_unit, struct dmar_en
} }
asm_pause(); asm_pause();
} }
spinlock_release(&(dmar_unit->lock));
} }
/* /*
@ -606,11 +610,7 @@ static void dmar_invalid_context_cache(struct dmar_drhd_rt *dmar_unit,
} }
if (invalidate_desc.lo_64 != 0UL) { if (invalidate_desc.lo_64 != 0UL) {
spinlock_obtain(&(dmar_unit->lock));
dmar_issue_qi_request(dmar_unit, invalidate_desc); dmar_issue_qi_request(dmar_unit, invalidate_desc);
spinlock_release(&(dmar_unit->lock));
} }
} }
@ -653,11 +653,7 @@ static void dmar_invalid_iotlb(struct dmar_drhd_rt *dmar_unit, uint16_t did, uin
} }
if (invalidate_desc.lo_64 != 0UL) { if (invalidate_desc.lo_64 != 0UL) {
spinlock_obtain(&(dmar_unit->lock));
dmar_issue_qi_request(dmar_unit, invalidate_desc); dmar_issue_qi_request(dmar_unit, invalidate_desc);
spinlock_release(&(dmar_unit->lock));
} }
} }
@ -708,11 +704,7 @@ static void dmar_invalid_iec(struct dmar_drhd_rt *dmar_unit, uint16_t intr_index
} }
if (invalidate_desc.lo_64 != 0UL) { if (invalidate_desc.lo_64 != 0UL) {
spinlock_obtain(&(dmar_unit->lock));
dmar_issue_qi_request(dmar_unit, invalidate_desc); dmar_issue_qi_request(dmar_unit, invalidate_desc);
spinlock_release(&(dmar_unit->lock));
} }
} }