Re: git: e66390736613 - main - Define _NPCM and the last PC_FREEn constant in terms of _NPCPV.
Date: Mon, 29 Aug 2022 16:31:23 UTC
On 8/26/22 2:27 PM, Warner Losh wrote: > Hey John, > > On Fri, Aug 26, 2022 at 12:10 PM John Baldwin <jhb@freebsd.org> wrote: > >> On 8/23/22 1:31 PM, John Baldwin wrote: >>> The branch main has been updated by jhb: >>> >>> URL: >> https://cgit.FreeBSD.org/src/commit/?id=e66390736613a452238531f64bb9f674ebd4c3a6 >>> >>> commit e66390736613a452238531f64bb9f674ebd4c3a6 >>> Author: John Baldwin <jhb@FreeBSD.org> >>> AuthorDate: 2022-08-23 20:31:02 +0000 >>> Commit: John Baldwin <jhb@FreeBSD.org> >>> CommitDate: 2022-08-23 20:31:02 +0000 >>> >>> Define _NPCM and the last PC_FREEn constant in terms of _NPCPV. >>> >>> This applies one of the changes from >>> 5567d6b4419b02a2099527228b1a51cc55a5b47d to other architectures >>> besides arm64. >>> >>> Reviewed by: kib >>> Sponsored by: DARPA >>> Differential Revision: https://reviews.freebsd.org/D36263 >> >> So this actually broke emulators/qemu because <machine/pmap.h> now >> requires <sys/param.h>. I have a patch to fix the port available at >> https://reviews.freebsd.org/D36362. What I don't know is if there are >> other ports broken by this that might change how to address this? I >> would mostly hope that <machine/pmap.h> wouldn't be a header that userland >> would need to use and that adding <sys/param.h> in a few places would >> be the end of it. However, if there's wider-spread breakage then I >> would hack on this to avoid the need for <sys/param.h>. >> > > This will break qemu building on FreeBSD in the 7.1 release. It's almost > out (last > rc is out and that's expected to be the actual release). Any chance we can > fix > this in our sources? Humm, maybe. I have a followup change I need to runtime test (it passes tinderbox) to add a <sys/_pv_entry.h> that deduplicates much of this such that the 'howmany' is now in a single place and could perhaps be worked around more centrally. The new patch file I have would also apply to 7.1 and could eventually be dropped in the future if 7.2 adds <sys/param.h>? For now, I'm more trying to understand how many ports are affected. -- John Baldwin