* [PATCH] glibc: Enable memory tagging for aarch64
@ 2021-05-23 4:30 Khem Raj
2021-05-23 10:38 ` [OE-core] " Richard Purdie
0 siblings, 1 reply; 3+ messages in thread
From: Khem Raj @ 2021-05-23 4:30 UTC (permalink / raw)
To: openembedded-core; +Cc: Khem Raj
Glibc on aarch64 has a memory tagging option that can be enabled
via GLIBC_TUNABLES="glibc.mem.tagging=$SOMETHING" when glibc
is built with memory tagging support and the kernel/HW supports
MTE. There should be no side effects unless the user turns it
on with approprate HW support
Linux 5.4 headers and binutils 2.33.1 or newer is needed.
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
meta/recipes-core/glibc/glibc_2.34.bb | 1 +
1 file changed, 1 insertion(+)
diff --git a/meta/recipes-core/glibc/glibc_2.34.bb b/meta/recipes-core/glibc/glibc_2.34.bb
index 0deb727ae4..37cf8ed85f 100644
--- a/meta/recipes-core/glibc/glibc_2.34.bb
+++ b/meta/recipes-core/glibc/glibc_2.34.bb
@@ -91,6 +91,7 @@ EXTRA_OECONF += "${@get_libc_fpu_setting(bb, d)}"
EXTRA_OECONF_append_x86 = " --enable-cet"
EXTRA_OECONF_append_x86-64 = " --enable-cet"
+EXTRA_OECONF_append_aarch64 = " --enable-memory-tagging"
PACKAGECONFIG ??= "nscd"
PACKAGECONFIG[nscd] = "--enable-nscd,--disable-nscd"
--
2.31.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [OE-core] [PATCH] glibc: Enable memory tagging for aarch64
2021-05-23 4:30 [PATCH] glibc: Enable memory tagging for aarch64 Khem Raj
@ 2021-05-23 10:38 ` Richard Purdie
2021-05-23 14:44 ` Khem Raj
0 siblings, 1 reply; 3+ messages in thread
From: Richard Purdie @ 2021-05-23 10:38 UTC (permalink / raw)
To: Khem Raj, openembedded-core
On Sat, 2021-05-22 at 21:30 -0700, Khem Raj wrote:
> Glibc on aarch64 has a memory tagging option that can be enabled
> via GLIBC_TUNABLES="glibc.mem.tagging=$SOMETHING" when glibc
> is built with memory tagging support and the kernel/HW supports
> MTE. There should be no side effects unless the user turns it
> on with approprate HW support
>
> Linux 5.4 headers and binutils 2.33.1 or newer is needed.
>
> Signed-off-by: Khem Raj <raj.khem@gmail.com>
> ---
> meta/recipes-core/glibc/glibc_2.34.bb | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/meta/recipes-core/glibc/glibc_2.34.bb b/meta/recipes-core/glibc/glibc_2.34.bb
> index 0deb727ae4..37cf8ed85f 100644
> --- a/meta/recipes-core/glibc/glibc_2.34.bb
> +++ b/meta/recipes-core/glibc/glibc_2.34.bb
> @@ -91,6 +91,7 @@ EXTRA_OECONF += "${@get_libc_fpu_setting(bb, d)}"
>
>
>
>
> EXTRA_OECONF_append_x86 = " --enable-cet"
> EXTRA_OECONF_append_x86-64 = " --enable-cet"
> +EXTRA_OECONF_append_aarch64 = " --enable-memory-tagging"
>
>
>
>
> PACKAGECONFIG ??= "nscd"
> PACKAGECONFIG[nscd] = "--enable-nscd,--disable-nscd"
glibc 2.34 doesn't exist in master? :)
Cheers,
Richard
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [OE-core] [PATCH] glibc: Enable memory tagging for aarch64
2021-05-23 10:38 ` [OE-core] " Richard Purdie
@ 2021-05-23 14:44 ` Khem Raj
0 siblings, 0 replies; 3+ messages in thread
From: Khem Raj @ 2021-05-23 14:44 UTC (permalink / raw)
To: Richard Purdie; +Cc: Patches and discussions about the oe-core layer
On Sun, May 23, 2021 at 3:38 AM Richard Purdie
<richard.purdie@linuxfoundation.org> wrote:
>
> On Sat, 2021-05-22 at 21:30 -0700, Khem Raj wrote:
> > Glibc on aarch64 has a memory tagging option that can be enabled
> > via GLIBC_TUNABLES="glibc.mem.tagging=$SOMETHING" when glibc
> > is built with memory tagging support and the kernel/HW supports
> > MTE. There should be no side effects unless the user turns it
> > on with approprate HW support
> >
> > Linux 5.4 headers and binutils 2.33.1 or newer is needed.
> >
> > Signed-off-by: Khem Raj <raj.khem@gmail.com>
> > ---
> > meta/recipes-core/glibc/glibc_2.34.bb | 1 +
> > 1 file changed, 1 insertion(+)
> >
> > diff --git a/meta/recipes-core/glibc/glibc_2.34.bb b/meta/recipes-core/glibc/glibc_2.34.bb
> > index 0deb727ae4..37cf8ed85f 100644
> > --- a/meta/recipes-core/glibc/glibc_2.34.bb
> > +++ b/meta/recipes-core/glibc/glibc_2.34.bb
> > @@ -91,6 +91,7 @@ EXTRA_OECONF += "${@get_libc_fpu_setting(bb, d)}"
> >
> >
> >
> >
> > EXTRA_OECONF_append_x86 = " --enable-cet"
> > EXTRA_OECONF_append_x86-64 = " --enable-cet"
> > +EXTRA_OECONF_append_aarch64 = " --enable-memory-tagging"
> >
> >
> >
> >
> > PACKAGECONFIG ??= "nscd"
> > PACKAGECONFIG[nscd] = "--enable-nscd,--disable-nscd"
>
> glibc 2.34 doesn't exist in master? :)
ah I should have rebased
>
> Cheers,
>
> Richard
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2021-05-23 4:30 [PATCH] glibc: Enable memory tagging for aarch64 Khem Raj
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2021-05-23 14:44 ` Khem Raj
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