From: Maarten Lankhorst <maarten.lankhorst@canonical.com>
To: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Matt Fleming <matt@console-pimps.org>,
Ulf Winkelvos <ulf@winkelvos.de>,
Matt Fleming <matt.fleming@intel.com>,
LKML <linux-kernel@vger.kernel.org>,
"x86@kernel.org" <x86@kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>,
"linux-efi@vger.kernel.org" <linux-efi@vger.kernel.org>,
Seth Forshee <seth.forshee@canonical.com>,
Matthew Garrett <mjg59@srcf.ucam.org>
Subject: Re: [REGRESSION] "efi: efistub: Convert into static library" and preparation patches
Date: Wed, 03 Sep 2014 17:30:17 +0200 [thread overview]
Message-ID: <54073409.6030004@canonical.com> (raw)
In-Reply-To: <CAKv+Gu8OD3p+GSwB+SPRf3pKwZB2R1t6x1zK7czGCXj1QhB7_g@mail.gmail.com>
Hey,
Op 03-09-14 om 14:18 schreef Ard Biesheuvel:
> Could you please try adding the visibility attribute lik this instead?
>
> diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
> index 044a2fd3c5fe..8725d85f1903 100644
> --- a/arch/x86/include/asm/efi.h
> +++ b/arch/x86/include/asm/efi.h
> @@ -178,7 +178,7 @@ struct efi_config {
> bool is64;
> } __packed;
>
> -extern struct efi_config *efi_early;
> +extern __attribute__((visibility("hidden"))) struct efi_config *efi_early;
>
> #define efi_call_early(f, ...) \
> efi_early->call(efi_early->f, __VA_ARGS__);
>
> Before this change, I get 18 R_X86_64_GOTPCREL relocations pointing to
> efi_early, both in efi-stub-helper.c and eboot.c.
> After the change, I get 0, using 'readelf -a
> drivers/firmware/efi/libstub/efi-stub-helper.o
> arch/x86/boot/compressed/eboot.o|grep GOTPCREL|wc -l'
>
Yeah that fixes things!
Feel free to slap on a reported-reviewed-and-tested-by on your patch. :-)
~Maarten
next prev parent reply other threads:[~2014-09-03 15:30 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-02 15:25 [REGRESSION] "efi: efistub: Convert into static library" and preparation patches Maarten Lankhorst
2014-09-02 19:29 ` Matt Fleming
2014-09-03 6:06 ` Ard Biesheuvel
2014-09-03 8:27 ` Maarten Lankhorst
2014-09-03 12:18 ` Ard Biesheuvel
2014-09-03 15:30 ` Maarten Lankhorst [this message]
2014-09-03 15:37 ` Ard Biesheuvel
2014-09-03 17:59 ` Matt Fleming
2014-09-03 19:57 ` Ard Biesheuvel
2014-09-03 21:28 ` H. Peter Anvin
2014-09-04 10:48 ` Maarten Lankhorst
2014-09-04 11:19 ` Ard Biesheuvel
2014-09-04 11:24 ` Maarten Lankhorst
2014-09-04 12:54 ` Michael Brown
2014-09-04 19:12 ` Ard Biesheuvel
2014-09-04 21:25 ` Ard Biesheuvel
2014-09-04 21:37 ` Matt Fleming
2014-09-05 20:27 ` Matt Fleming
2014-09-08 12:55 ` Ard Biesheuvel
2014-09-08 13:01 ` Maarten Lankhorst
2014-09-08 13:16 ` Matt Fleming
2014-09-22 18:44 ` Josh Boyer
2014-09-22 21:07 ` Matt Fleming
2014-09-22 21:24 ` Josh Boyer
2014-09-03 21:47 ` H. Peter Anvin
2014-09-04 6:47 ` Ard Biesheuvel
2014-09-04 7:40 ` Matt Fleming
2014-09-04 7:50 ` Maarten Lankhorst
2014-09-04 7:29 ` Matt Fleming
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