From: "Ard Biesheuvel" <ardb@kernel.org>
To: "Mingcong Bai" <jeffbai@aosc.io>, linux-kernel@vger.kernel.org
Cc: "Kexy Biscuit" <kexybiscuit@aosc.io>,
"Xi Ruoyao" <xry111@xry111.site>,
"Thomas Gleixner" <tglx@kernel.org>,
"Ingo Molnar" <mingo@redhat.com>,
"Borislav Petkov" <bp@alien8.de>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
x86@kernel.org, "H . Peter Anvin" <hpa@zytor.com>,
"Nathan Chancellor" <nathan@kernel.org>,
"Nicolas Schier" <nsc@kernel.org>,
"Nick Terrell" <terrelln@fb.com>,
"David Sterba" <dsterba@suse.com>,
"Jan Stancek" <jstancek@redhat.com>,
"Josh Poimboeuf" <jpoimboe@kernel.org>,
"Petr Mladek" <pmladek@suse.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Thomas Weißschuh" <thomas.weissschuh@linutronix.de>,
"Simon Glass" <sjg@chromium.org>,
"Marco Elver" <elver@google.com>,
linux-kbuild@vger.kernel.org
Subject: Re: [RFC PATCH] x86/boot: use zstd -19 if building for 32-bit
Date: Tue, 28 Jul 2026 18:58:17 +0300 [thread overview]
Message-ID: <f833d263-9f47-454e-bc64-818ac42d63dd@app.fastmail.com> (raw)
In-Reply-To: <20260728143141.2870515-1-jeffbai@aosc.io>
On Tue, 28 Jul 2026, at 17:31, Mingcong Bai wrote:
> When using native build environments (that is, 32-bit x86 chroot/container
> as build environment for 32-bit x86 binaries), `zstd -22' requests more
> virtual memory than that could be allowed on 32-bit hosts.
>
> Introduce `cmd_zstd_with_size' for CONFIG_X86_32 builds.
>
> This is quite possibly just stupid... But there doesn't seem to be a way
> to detect the host environment. So I'm sending this patch as a means to
> ask for your opinions.
>
> Any help would be greated appreciated.
>
> Signed-off-by: Mingcong Bai <jeffbai@aosc.io>
> ---
> arch/x86/boot/compressed/Makefile | 5 +++++
> scripts/Makefile.lib | 3 +++
> 2 files changed, 8 insertions(+)
>
Doesn't this mean ZSTD -22 is generally broken on 32-bit? How is this
specific to the kernel?
next prev parent reply other threads:[~2026-07-28 15:58 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-28 14:31 Mingcong Bai
2026-07-28 14:42 ` Xi Ruoyao
2026-07-28 15:58 ` Ard Biesheuvel [this message]
2026-07-29 1:44 ` Mingcong Bai
2026-07-28 16:05 ` H. Peter Anvin
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