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| author | Brian Gerst <brgerst@gmail.com> | 2020-06-17 18:56:24 -0400 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-06-18 13:09:17 +0200 |
| commit | c9a1ff316bc9b1d1806a4366d0aef6e18833ba52 (patch) | |
| tree | f2dae0b0a21105a645d90444b3effddc06504c94 /arch/s390/kernel/entry.S | |
| parent | a5ce9f2bb665d1d2b31f139a02dbaa2dfbb62fa6 (diff) | |
x86/stackprotector: Pre-initialize canary for secondary CPUs
The idle tasks created for each secondary CPU already have a random stack
canary generated by fork(). Copy the canary to the percpu variable before
starting the secondary CPU which removes the need to call
boot_init_stack_canary().
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200617225624.799335-1-brgerst@gmail.com
Diffstat (limited to 'arch/s390/kernel/entry.S')
0 files changed, 0 insertions, 0 deletions