Messages in this thread | | | From | Maarten ter Huurne <> | Subject | Re: MIPS: bug: gettimeofday syscall broken on CI20 board | Date | Thu, 28 Nov 2019 14:29:45 +0100 |
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On Thursday, 28 November 2019 13:33:17 CET H. Nikolaus Schaller wrote: > Hi Vincenzo, > > > Am 28.11.2019 um 13:21 schrieb Vincenzo Frascino > > <vincenzo.frascino@arm.com>:> > > [...] > > The the lib that provides the gettimeofday() changes accordingly > > with vdso_data. 5.4 and 4.19 have 2 different vdso libraries as > > well. > > Yes, that is what I have assumed what happens. How do these libs go > into an existing and working root-file-system with Debian Stretch?
I'm a novice when it comes to vDSO, so someone please correct me if I'm wrong.
From what I read vDSO is a library in the sense that it exports ELF symbols that applications and other libraries (libc in particular) can use, but it is not a file on disk.
As such, which rootfs you use shouldn't matter, since the vDSO is not in the rootfs. Instead, it is contained in the kernel image. Searching for "linux-vdso.so.1" on packages.debian.org indeed returns no hits.
There is a check in arch/mips/vdso/Makefile that disables vDSO on MIPS when building the kernel with binutils < 2.25. I don't know if that is in any way related to this issue.
Bye, Maarten
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