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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-01-25 11:23:27 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-01-25 11:23:27 +0100
commit1d6a81519d9d27b99bca638d14eca63c31111afd (patch)
tree8063d42442b46bac5e3defa59de277fecc524ad6 /arch/x86/hyperv/mmu.c
parent386ce1d748edfdf57f21310647e2d42dd5f737f2 (diff)
parent6ee1d745b7c9fd573fba142a2efdad76a9f1cb04 (diff)
Merge v5.11-rc5 into usb-next
We need the fixes in here and this resolves a merge issue with drivers/usb/gadget/udc/bdc/Kconfig. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86/hyperv/mmu.c')
-rw-r--r--arch/x86/hyperv/mmu.c12
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);