On Wed, Jun 24, 2020 at 02:09:40PM -0700, Nick Desaulniers wrote:

On Wed, Jun 24, 2020 at 1:58 PM Nick Desaulniers
[off-list ref] wrote:

quoted

On Wed, Jun 24, 2020 at 1:33 PM Sami Tolvanen [off-list ref] wrote:

quoted

Filter out CC_FLAGS_LTO for the vDSO.

Just curious about this patch (and the following one for x86's vdso),
do you happen to recall specifically what the issues with the vdso's
are?

+ Andi (tangential, I actually have a bunch of tabs open with slides
from http://halobates.de/ right now)
58edae3aac9f2
67424d5a22124
$ git log -S DISABLE_LTO

I think I did it originally because the vDSO linker step didn't do
all the magic needed for gcc LTO. But it also doesn't seem to be
very useful for just a few functions that don't have complex
interactions, and somewhat risky for violating some assumptions.

-Andi

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