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| author |   Jason A. Donenfeld <Jason@zx2c4.com> | 2021-05-19 18:01:40 +0200 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2021-05-19 18:05:56 +0200 |
| commit | 6e08a8bed59ed29f8343644fbd00579981326719 (patch) | |
| tree | 680b56effac622aa4367b91ced5e70859abbea2e | |
| parent | wireguard: use synchronize_net rather than synchronize_rcu (diff) | |
| download | wireguard-linux-6e08a8bed59ed29f8343644fbd00579981326719.tar.xz wireguard-linux-6e08a8bed59ed29f8343644fbd00579981326719.zip | |
wireguard: do not use -O3
Apparently, various versions of gcc have O3-related miscompiles. Looking
at the difference between -O2 and -O3 for gcc 11 doesn't indicate
miscompiles, but the difference also doesn't seem so significant for
performance that it's worth risking.
Link: https://lore.kernel.org/lkml/CAHk-=wjuoGyxDhAF8SsrTkN0-YfCx7E6jUN3ikC_tn2AKWTTsA@mail.gmail.com/
Link: https://lore.kernel.org/lkml/CAHmME9otB5Wwxp7H8bR_i2uH2esEMvoBMC8uEXBMH9p0q1s6Bw@mail.gmail.com/
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes: e7096c131e51 ("net: WireGuard secure network tunnel")
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
| -rw-r--r-- | drivers/net/wireguard/Makefile | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/net/wireguard/Makefile b/drivers/net/wireguard/Makefile index fc52b2cb500b..dbe1f8514efc 100644 --- a/drivers/net/wireguard/Makefile +++ b/drivers/net/wireguard/Makefile @@ -1,5 +1,4 @@ -ccflags-y := -O3 -ccflags-y += -D'pr_fmt(fmt)=KBUILD_MODNAME ": " fmt' +ccflags-y := -D'pr_fmt(fmt)=KBUILD_MODNAME ": " fmt' ccflags-$(CONFIG_WIREGUARD_DEBUG) += -DDEBUG wireguard-y := main.o wireguard-y += noise.o |