Le 19/05/2020 à 21:44, Richard Henderson a écrit : > The subject of AT_SYSINFO came up on launchpad recently. > > There is definite room for improvement in all of this: > > (1) We could build the vdso binary into qemu instead of really > loading it from the file system. This would obviate the > several problems of locating the .so file. It would also > mean that --static builds continue to create a standalone > qemu binary. > > (2) We could use our cross-build system to build the vdso. > Though we'd still likely want to keep the image in git > along side the other rom images for when cross-build is > not available. > > (3) There are some ??? comments where some decisions could be made, > and other ??? that are merely commenting on weirdness. > > (4) It shouldn't take too much effort to create vdsos for the > other architectures. But we should get this one as clean > as we can first. > > Amusingly, this patch set has just turned 10 years old. > First posted April 4, 2010. I don't recall ever seeing > any review on the several postings over the years. > > > r~ > > > Richard Henderson (2): > linux-user: Build vdso for x64. > linux-user: Load a VDSO for x86-64. > > Makefile | 4 +- > linux-user/elfload.c | 203 +++++++++++++++++++++++++++++++++++++- > pc-bios/Makefile | 5 + > pc-bios/vdso-linux-x64.S | 115 +++++++++++++++++++++ > pc-bios/vdso-linux-x64.ld | 81 +++++++++++++++ > pc-bios/vdso-linux-x64.so | Bin 0 -> 7500 bytes > 6 files changed, 401 insertions(+), 7 deletions(-) > create mode 100644 pc-bios/vdso-linux-x64.S > create mode 100644 pc-bios/vdso-linux-x64.ld > create mode 100755 pc-bios/vdso-linux-x64.so >
Applied to my linux-user branch. Thanks, Laurent
