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| author | David S. Miller <davem@davemloft.net> | 2020-05-24 13:47:27 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-05-24 13:47:27 -0700 |
| commit | 13209a8f7304a34158f4366e8ea07a1965c05ac7 (patch) | |
| tree | f25ba4846fe02a32d4a14ef1a6be3227363da919 /arch/x86/kernel/smpboot.c | |
| parent | 316107119f473e764cf5e50437333c8b83bec0da (diff) | |
| parent | 98790bbac4db1697212ce9462ec35ca09c4a2810 (diff) | |
| download | lwn-13209a8f7304a34158f4366e8ea07a1965c05ac7.tar.gz lwn-13209a8f7304a34158f4366e8ea07a1965c05ac7.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
The MSCC bug fix in 'net' had to be slightly adjusted because the
register accesses are done slightly differently in net-next.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/x86/kernel/smpboot.c')
| -rw-r--r-- | arch/x86/kernel/smpboot.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 8c89e4d9ad28..2f24c334a938 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -266,6 +266,14 @@ static void notrace start_secondary(void *unused) wmb(); cpu_startup_entry(CPUHP_AP_ONLINE_IDLE); + + /* + * Prevent tail call to cpu_startup_entry() because the stack protector + * guard has been changed a couple of function calls up, in + * boot_init_stack_canary() and must not be checked before tail calling + * another function. + */ + prevent_tail_call_optimization(); } /** |