diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2021-01-14 18:34:50 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-01-14 18:34:50 -0800 |
| commit | 1d9f03c0a15fa01aa14fb295cbc1236403fceb0b (patch) | |
| tree | 2161a4e17f383a14e1e235e2deed7142733aca9b /arch/x86/hyperv/mmu.c | |
| parent | e4abfd88c78105069eef627e04ef9413746bab7b (diff) | |
| parent | 146620506274bd24d52fb1c589110a30eed8240b (diff) | |
| download | lwn-1d9f03c0a15fa01aa14fb295cbc1236403fceb0b.tar.gz lwn-1d9f03c0a15fa01aa14fb295cbc1236403fceb0b.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'arch/x86/hyperv/mmu.c')
| -rw-r--r-- | arch/x86/hyperv/mmu.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/arch/x86/hyperv/mmu.c b/arch/x86/hyperv/mmu.c index 5208ba49c89a..2c87350c1fb0 100644 --- a/arch/x86/hyperv/mmu.c +++ b/arch/x86/hyperv/mmu.c @@ -66,11 +66,17 @@ static void hyperv_flush_tlb_others(const struct cpumask *cpus, if (!hv_hypercall_pg) goto do_native; - if (cpumask_empty(cpus)) - return; - local_irq_save(flags); + /* + * Only check the mask _after_ interrupt has been disabled to avoid the + * mask changing under our feet. + */ + if (cpumask_empty(cpus)) { + local_irq_restore(flags); + return; + } + flush_pcpu = (struct hv_tlb_flush **) this_cpu_ptr(hyperv_pcpu_input_arg); |