Date: Thu, 12 Jun 2025 22:32:59 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: Mark Millard <marklmi@yahoo.com> Cc: dev-commits-src-main@freebsd.org Subject: Re: git: 883596411327 - stable/14 - amd64: switch to amd64_set_tlsbase to set tls base [|| (. . . && osrel >= 1403502) test too?] Message-ID: <aEsra4zbL6_v51xC@kib.kiev.ua> In-Reply-To: <4C483AC0-4082-4EBB-AAC2-01610E0482B3@yahoo.com> References: <4C483AC0-4082-4EBB-AAC2-01610E0482B3.ref@yahoo.com> <4C483AC0-4082-4EBB-AAC2-01610E0482B3@yahoo.com>
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On Thu, Jun 12, 2025 at 12:22:52PM -0700, Mark Millard wrote: > Konstantin Belousov <kib_at_FreeBSD.org> wrote on > Date: Thu, 12 Jun 2025 18:03:03 UTC : > > > The branch stable/14 has been updated by kib: > > > > URL: https://cgit.FreeBSD.org/src/commit/?id=88359641132766cc0a8eed283a7a704595c7c119 > > > > commit 88359641132766cc0a8eed283a7a704595c7c119 > > Author: Konstantin Belousov <kib@FreeBSD.org> > > AuthorDate: 2025-05-22 04:32:25 +0000 > > Commit: Konstantin Belousov <kib@FreeBSD.org> > > CommitDate: 2025-06-12 18:02:50 +0000 > > > > amd64: switch to amd64_set_tlsbase to set tls base > > > > (cherry picked from commit aef025fc9b6c8b06677086a93c866ee09622f6fa) > > --- > > libexec/rtld-elf/amd64/reloc.c | 6 ++++-- > > sys/x86/include/tls.h | 2 +- > > 2 files changed, 5 insertions(+), 3 deletions(-) > > > > diff --git a/libexec/rtld-elf/amd64/reloc.c b/libexec/rtld-elf/amd64/reloc.c > > index 7e7f01a5d186..74693d35ba1d 100644 > > --- a/libexec/rtld-elf/amd64/reloc.c > > +++ b/libexec/rtld-elf/amd64/reloc.c > > @@ -530,10 +530,12 @@ allocate_initial_tls(Obj_Entry *objs) > > addr = allocate_tls(objs, 0, TLS_TCB_SIZE, TLS_TCB_ALIGN); > > > > /* > > - * This does not use _tcb_set() as it calls amd64_set_fsbase() > > + * This does not use _tcb_set() as it calls amd64_set_tlsbase() > > * which is an ifunc and rtld must not use ifuncs. > > */ > > - if (__getosreldate() >= P_OSREL_WRFSBASE && > > + if (__getosreldate() >= P_OSREL_TLSBASE) > > lib/libc/amd64/sys/amd64_set_tlsbase.c has more in its test, > "|| (P_OSREL_MAJOR(osrel) == 14 && osrel >= 1403502)" : > > +DEFINE_UIFUNC(, int, amd64_set_tlsbase, (void *)) > +{ > + int osrel; > + > + osrel = __getosreldate(); > + if (osrel >= P_OSREL_TLSBASE || > + (P_OSREL_MAJOR(osrel) == 14 && osrel >= 1403502)) > + return (amd64_set_tlsbase_syscall); > + return (amd64_set_fsbase); > +} > > Is the difference in libexec/rtld-elf/amd64/reloc.c related > to P_OSREL_TLSBASE like testing deliberate? Thanks, should be fixed.
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