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hv: vlapic: EOI exit bitmap should set or clear atomically

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For per-vCPU, EOI exit bitmap is a global parameter which should set or clear
atomically since there's no lock to protect this critical variable.

Tracked-On: #1842
Signed-off-by: Li, Fei1 <fei1.li@intel.com>
Reviewed-by: Yin Fengwei <fengwei.yin@intel.com>
This commit is contained in:
Li, Fei1 2019-07-15 17:55:42 +08:00 committed by ACRN System Integration
parent 0eb0854858
commit 540841ac5d
1 changed files with 2 additions and 2 deletions
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4
hypervisor/arch/x86/guest/vcpu.c
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@ -168,7 +168,7 @@ void vcpu_set_eoi_exit_bitmap(struct acrn_vcpu *vcpu, uint32_t vector)
{
pr_dbg("%s", __func__);
if (!bitmap_test_and_set_nolock((uint16_t)(vector & 0x3fU),
if (!bitmap_test_and_set_lock((uint16_t)(vector & 0x3fU),
&(vcpu->arch.eoi_exit_bitmap[(vector & 0xffU) >> 6U]))) {
vcpu_make_request(vcpu, ACRN_REQUEST_EOI_EXIT_BITMAP_UPDATE);
}
@ -178,7 +178,7 @@ void vcpu_clear_eoi_exit_bitmap(struct acrn_vcpu *vcpu, uint32_t vector)
{
pr_dbg("%s", __func__);
if (bitmap_test_and_clear_nolock((uint16_t)(vector & 0x3fU),
if (bitmap_test_and_clear_lock((uint16_t)(vector & 0x3fU),
&(vcpu->arch.eoi_exit_bitmap[(vector & 0xffU) >> 6U]))) {
vcpu_make_request(vcpu, ACRN_REQUEST_EOI_EXIT_BITMAP_UPDATE);
}