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Differential D9372

Reimplement linux_arch_prctl() as a wrapper around sysarch().
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Authored by trasz on Jan 29 2017, 2:56 PM.
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dchagin
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rS313993: Reimplement linux_arch_prctl() as a wrapper around sysarch(2).
Summary

Reimplement linux_arch_prctl() as a wrapper around sysarch().
It also adds support for LINUX_ARCH_SET_GS.

Dmitri, could you test it? Thanks!

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trasz updated this revision to Diff 24536.Jan 29 2017, 2:56 PM
trasz retitled this revision from to Reimplement linux_arch_prctl() as a wrapper around sysarch()..
trasz updated this object.
trasz edited the test plan for this revision. (Show Details)
Herald added a subscriber: imp. · View Herald TranscriptJan 29 2017, 2:56 PM
trasz added reviewers: dchagin, kib.Jan 29 2017, 2:57 PM

Forgot to mention - it changes the ordering in the case() statement to match the order of declarations of contants.

kib added inline comments.Jan 29 2017, 3:17 PM
sys/amd64/linux/linux_machdep.c
250 ↗(On Diff #24536)

Shouldn't you reimplement linux_set_cloned_tls() using sysarch() as well ?

trasz added a comment.Feb 11 2017, 3:25 PM

I should, but it's called from entirely different codepaths, and I'd prefer to not mix things at this point, since it makes debugging regressions harder.

dchagin accepted this revision.Feb 18 2017, 5:02 PM
dchagin edited edge metadata.

I did not this because I was planning to change the test of user supplied addr value against VM_MAXUSER_ADDRESS as since vdso the upper limit of address space is less than VM_MAXUSER_ADDRESS

sys/amd64/linux/linux_machdep.c
68 ↗(On Diff #24536)

garbage?

This revision is now accepted and ready to land.Feb 18 2017, 5:02 PM
Closed by commit rS313993: Reimplement linux_arch_prctl() as a wrapper around sysarch(2). (authored by trasz). · Explain WhyFeb 20 2017, 4:13 PM
This revision was automatically updated to reflect the committed changes.

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sys/
amd64/
linux/
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head/sys/amd64/linux/linux_machdep.c

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