Adapt the OpenBSD hvt tender to the new vmm(4)#600
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dinosaure merged 3 commits intoSolo5:masterfrom Sep 23, 2025
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- VM memory allocation is now handled by vmm(4) - VMM_IOC_MPROTECT_EPT has been dropped some time ago, vmm(4) handles this now This commit breaks releases of OpenBSD (7.7 and before)
Contributor
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I wonder if there's anything we can have the conditional on, e.g. if we're <= 7.7 retain the current code, otherwise use this new code? |
Collaborator
I will agree with that. |
Contributor
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See omegametabroccolo#1 (which should work since openbsd/src@ca6cf18) EDIT: please note I didn't compile that commit, please check if it works :) |
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Thanks, if @omegametabroccolo is happy, I can cherry-pick the commit and merge it. |
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Yes that works, thanks! |
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Thanks both! |
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- Fix `test_ssp` on OpenBSD (@omegametabroccolo, Solo5/solo5#599) - Fix build of hvt on aarch64 (Solo5/solo5#601, @cmainas) - Adapt OpenBSD hvt tender with the new `vmm(4)` (@omegametabroccolo, @hannesm, Solo5/solo5#600)
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- Fix `test_ssp` on OpenBSD (@omegametabroccolo, Solo5/solo5#599) - Fix build of hvt on aarch64 (Solo5/solo5#601, @cmainas) - Adapt OpenBSD hvt tender with the new `vmm(4)` (@omegametabroccolo, @hannesm, Solo5/solo5#600)
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- Fix compilation on OpenBSD about `#ifdef` (@omegametabroccolo, @hannesm, @reynir, Solo5/solo5#614, related with Solo5/solo5#600) - Add GitHub actions to test Solo5 on different platforms (@hannesm, Solo5/solo5#616, Solo5/solo5#617 & Solo5/solo5#540) - Do not use `-Wstringopt-overflow` when we use `clang` for `test_ssp` (@hannesm, Solo5/solo5#607) - Show errors and exit instead of `assert false` (@shym, @edwintorok, @hannesm, @reynir, Solo5/solo5#613 & Solo5/solo5#612) - Define `.note.GNU-stack` when it's needed (@shym, @Kensan, @hannesm, @palainp, @dinosaure, Solo5/solo5#619, Solo5/solo5#570 & Solo5/solo5#562) - Detect MTU on TAP interface for hvt, spt and virtio (@reynir, @hannesm, @dinosaure, Solo5/solo5#605 & Solo5/solo5#606)
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For now, this PR only works on -current and breaks released versions of OpenBSD. AFAICT there is no way to know at compile time if we're on -current or not, but we can check the latest released version with the
OpenBSDmacro from<sys/param.h>. We could wait until OpenBSD 7.8 is released to add some#if OpenBSD >= [7.8 version number]and support both 7.8 and earlier releases, as suggested in #598.