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hv: fix pcpu_id mask issue in smp_call_function() 

INVALID_BIT_INDEX has 16 bits only, which removes all pcpu_id that
is >= 16 from the destination mask.

Tracked-On: #4354
Signed-off-by: Zide Chen <zide.chen@intel.com>
This commit is contained in:
Zide Chen 2020-01-09 15:17:02 -08:00 committed by wenlingz
parent a631c94c10
commit 086e0f19d8
1 changed files with 1 additions and 1 deletions
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2
hypervisor/arch/x86/notify.c
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@ -43,7 +43,7 @@ void smp_call_function(uint64_t mask, smp_call_func_t func, void *data)
struct smp_call_info_data *smp_call;
/* wait for previous smp call complete, which may run on other cpus */
while (atomic_cmpxchg64(&smp_call_mask, 0UL, mask & INVALID_BIT_INDEX) != 0UL);
while (atomic_cmpxchg64(&smp_call_mask, 0UL, mask) != 0UL);
pcpu_id = ffs64(mask);
while (pcpu_id < MAX_PCPU_NUM) {
bitmap_clear_nolock(pcpu_id, &mask);