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| author | Ahmad Fatoum <ahmad@a3f.at> | 2021-02-23 08:24:27 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2021-03-17 09:29:33 +0100 |
| commit | 18e0d8bb177d6fe70b79a97c3bbe25b7cf6ba864 (patch) | |
| tree | 006b5426c10860c8939bd2d9597e6b4421f53da0 /arch | |
| parent | a1c1b4353c261d427b7a0d88ceccd61718f2031c (diff) | |
| download | barebox-18e0d8bb177d6fe70b79a97c3bbe25b7cf6ba864.tar.gz barebox-18e0d8bb177d6fe70b79a97c3bbe25b7cf6ba864.tar.xz | |
kbuild: add '-fcf-protection=none' to barebox build options
Ubuntu 19.10 enables this by default for x86 architectures. The option
instructs the compiler to generate special nop instruction at all places
where execution may jump to. This not only means the incoming setjmp
implementations will need to be adjusted[1], but in case the option is
extended to expose similar features of other microarches, this could
lead to breakages there with newer compilers. Only safe way to use it
seems to disable it wholesale and enable it selectively for platforms that
are aware of it. So do the disabling part.
[1]: https://github.com/ipxe/ipxe/commit/e8393c372
Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions