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https://sysdig.com/blog/troubleshooting-containers/
Jan 16, 2018 · This time, I’m running the test inside the Redis container, so it will be using an old libc version without vDSO support for time(). The kernel is configured with native vsyscall support: root@249d40385d6f:/# ./stress 8.4M evt/s The throughput is much lower in this scenario, more similar to a typical system call invocation.
https://lore.kernel.org/linux-hyperv/
Linux-HyperV Archive on lore.kernel.org Archives are clonable: git clone --mirror https://lore.kernel.org/linux-hyperv/0 linux-hyperv/git/0.git # If you have public ...
https://github.com/golang/go/issues/33574
Aug 09, 2019 · The current kernels used on both the linux-arm and linux-arm64 builders do not use VDSO for the time functions. The purpose of this issue is upgrade the kernel so that it uses VDSO on both kinds of systems. It is of course fine to split the issue in two.
http://lkml.iu.edu/hypermail/linux/kernel/1207.0/03003.html
From: Will Deacon <will.deacon@xxxxxxx> This patch adds VDSO support for 64-bit applications. The VDSO code is currently used for sys_rt_sigreturn() and optimised gettimeofday()
https://www.kernel.org/doc/html/latest/kbuild/reproducible-builds.html
The kernel embeds the building user and host names in /proc/version. ... The build processes for some programs under the tools/ subdirectory do not completely support out-of-tree builds. ... you can make the vDSO different for different kernel versions by including an arbitrary string of “salt” in it.
https://github.com/torvalds/linux/blob/master/arch/arm64/Makefile
Linux kernel source tree. Contribute to torvalds/linux development by creating an account on GitHub.
http://maemo.org/development/sdks/maemo_5-0_installation/
The following document describes the installation of the Maemo SDK. ... Scratchbox does not work when VDSO support is enabled in the host's kernel. We're working on making it possible, but at the moment there are some workarounds, which are presented here.
https://patchwork.kernel.org/cover/10914161/
The new vDSO API is to support data exchange on stack. It has nothing to do with debugging. BTW, the community has closed on this. The CFI directives are for stack unwinding. They don't affect what the code does so you can just treat them as NOPs if you don't understand what they do.
http://man7.org/linux/man-pages/man7/vdso.7.html
vdso - overview of the virtual ELF dynamic shared object SYNOPSIS top #include <sys/auxv.h> void *vdso = (uintptr_t) getauxval(AT_SYSINFO_EHDR); DESCRIPTION top The "vDSO" (virtual dynamic shared object) is a small shared library that the kernel automatically maps into the address space of all user-space applications.
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