Date: Tue, 10 Feb 2026 21:38:16 +0000 From: Andrew Turner <andrew@fubar.geek.nz> To: Jessica Clarke <jrtc27@freebsd.org> Cc: "src-committers@freebsd.org" <src-committers@FreeBSD.org>, "dev-commits-src-all@freebsd.org" <dev-commits-src-all@FreeBSD.org>, "dev-commits-src-main@freebsd.org" <dev-commits-src-main@FreeBSD.org>, Sarah Walker <sarah.walker2@arm.com> Subject: Re: git: 2ccbf06c0285 - main - arm64: Add MOPS implementations of memset(), memcpy() and memmove() Message-ID: <B51FC2DF-66DE-4C41-AAA9-C17B75B8A315@fubar.geek.nz> In-Reply-To: <5F843E5F-5827-4AFC-B843-4812C0D907FC@freebsd.org> References: <698b5224.47b1b.86c86bb@gitrepo.freebsd.org> <5F843E5F-5827-4AFC-B843-4812C0D907FC@freebsd.org>
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[-- Attachment #1 --] > On 10 Feb 2026, at 18:12, Jessica Clarke <jrtc27@freebsd.org> wrote: > > On 10 Feb 2026, at 15:43, Andrew Turner <andrew@FreeBSD.org <mailto:andrew@FreeBSD.org>> wrote: > >> The branch main has been updated by andrew: >> >> URL: https://cgit.FreeBSD.org/src/commit/?id=2ccbf06c0285ca1c06681e7212da8e7d1e87fe19 >> >> commit 2ccbf06c0285ca1c06681e7212da8e7d1e87fe19 >> Author: Sarah Walker <sarah.walker2@arm.com> >> AuthorDate: 2026-01-28 16:22:50 +0000 >> Commit: Andrew Turner <andrew@FreeBSD.org> >> CommitDate: 2026-02-10 15:39:56 +0000 >> >> arm64: Add MOPS implementations of memset(), memcpy() and memmove() >> >> Enable the use of MOPS implementations of memset, memcpy and memmove within >> the kernel. Fix pre-ifunc resolution uses of these functions. > > And what happens if the compiler inserts calls to these functions prior > to IFUNC resolution? Probably as well as if the compiler inserted calls to memset/memcpy/memmove before ifunc resolution on amd64 given it has had it for these functions since 2018. Andrew [-- Attachment #2 --] <html><head><meta http-equiv="content-type" content="text/html; charset=us-ascii"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><meta http-equiv="content-type" content="text/html; charset=us-ascii"><div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><br id="lineBreakAtBeginningOfMessage"><div><br><blockquote type="cite"><div>On 10 Feb 2026, at 18:12, Jessica Clarke <jrtc27@freebsd.org> wrote:</div><br class="Apple-interchange-newline"><div><meta charset="UTF-8"><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">On 10 Feb 2026, at 15:43, Andrew Turner <</span><a href="mailto:andrew@FreeBSD.org" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">andrew@FreeBSD.org</a><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">> wrote:</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><blockquote type="cite" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">The branch main has been updated by andrew:<br><br>URL: https://cgit.FreeBSD.org/src/commit/?id=2ccbf06c0285ca1c06681e7212da8e7d1e87fe19<br><br>commit 2ccbf06c0285ca1c06681e7212da8e7d1e87fe19<br>Author: Sarah Walker <sarah.walker2@arm.com><br>AuthorDate: 2026-01-28 16:22:50 +0000<br>Commit: Andrew Turner <andrew@FreeBSD.org><br>CommitDate: 2026-02-10 15:39:56 +0000<br><br> arm64: Add MOPS implementations of memset(), memcpy() and memmove()<br><br> Enable the use of MOPS implementations of memset, memcpy and memmove within<br> the kernel. Fix pre-ifunc resolution uses of these functions.<br></blockquote><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">And what happens if the compiler inserts calls to these functions prior</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">to IFUNC resolution?</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"></div></blockquote></div><br><div>Probably as well as if the compiler inserted calls to memset/memcpy/memmove before ifunc resolution on amd64 given it has had it for these functions since 2018.</div><div><br></div><div>Andrew</div></div></body></html>home | help
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