From: jeffy <jeffy.chen@rock-chips.com>
To: Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Russell King - ARM Linux <linux@armlinux.org.uk>
Cc: Ingo Molnar <mingo@kernel.org>,
Chris Zhong <chris.zhong@rock-chips.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH] ARM: Fix zImage file size not aligned with CONFIG_EFI_STUB enabled
Date: Tue, 24 Oct 2017 17:16:02 +0800 [thread overview]
Message-ID: <59EF04D2.20102@rock-chips.com> (raw)
In-Reply-To: <CAKv+Gu_R+OfHMxcZEJML4Pm54DyOji6S42LihMgi6+vxi9LOAQ@mail.gmail.com>
Hi guys,
On 10/24/2017 04:09 PM, Ard Biesheuvel wrote:
> The following patch appears to fix the issue as well:
>
> diff --git a/arch/arm/boot/compressed/vmlinux.lds.S
> b/arch/arm/boot/compressed/vmlinux.lds.S
> index 7a4c59154361..0e0f504e256e 100644
> --- a/arch/arm/boot/compressed/vmlinux.lds.S
> +++ b/arch/arm/boot/compressed/vmlinux.lds.S
> @@ -83,7 +83,9 @@ SECTIONS
> __pecoff_data_rawsize = . - ADDR(.data);
> #endif
>
> - _edata = .;
> + .edata (NOLOAD) : {
> + _edata = .;
> + }
>
> _magic_sig = ZIMAGE_MAGIC(0x016f2818);
> _magic_start = ZIMAGE_MAGIC(_start);
>
> because the NOLOAD triggers the linker to emit all PROGBITS sections
> before _edata, including unknown ones.
>
> E.g., in my binary, it gives me
>
> 00798020 D __pecoff_data_end
> 00798200 d __ksymtab_sort
> 00798208 B __bss_start
> 00798208 D _edata
this works too:
+++ b/arch/arm/boot/compressed/vmlinux.lds.S
@@ -70,10 +70,6 @@ SECTIONS
.got : { *(.got) }
_got_end = .;
- /* ensure the zImage file size is always a multiple of 64 bits */
- /* (without a dummy byte, ld just ignores the empty section) */
- .pad : { BYTE(0); . = ALIGN(8); }
-
#ifdef CONFIG_EFI_STUB
.data : ALIGN(4096) {
__pecoff_data_start = .;
@@ -93,7 +89,10 @@ SECTIONS
__pecoff_data_rawsize = . - ADDR(.data);
#endif
- _edata = .;
+ /* ensure the zImage file size is always a multiple of 64 bits */
+ .edata : ALIGN(8) {
+ _edata = .;
+ }
339: 006cf200 8 OBJECT LOCAL DEFAULT 9 __ksymtab_sort
...
528: 006cf208 0 NOTYPE GLOBAL DEFAULT 9 _edata
WARNING: multiple messages have this Message-ID (diff)
From: jeffy.chen@rock-chips.com (jeffy)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: Fix zImage file size not aligned with CONFIG_EFI_STUB enabled
Date: Tue, 24 Oct 2017 17:16:02 +0800 [thread overview]
Message-ID: <59EF04D2.20102@rock-chips.com> (raw)
In-Reply-To: <CAKv+Gu_R+OfHMxcZEJML4Pm54DyOji6S42LihMgi6+vxi9LOAQ@mail.gmail.com>
Hi guys,
On 10/24/2017 04:09 PM, Ard Biesheuvel wrote:
> The following patch appears to fix the issue as well:
>
> diff --git a/arch/arm/boot/compressed/vmlinux.lds.S
> b/arch/arm/boot/compressed/vmlinux.lds.S
> index 7a4c59154361..0e0f504e256e 100644
> --- a/arch/arm/boot/compressed/vmlinux.lds.S
> +++ b/arch/arm/boot/compressed/vmlinux.lds.S
> @@ -83,7 +83,9 @@ SECTIONS
> __pecoff_data_rawsize = . - ADDR(.data);
> #endif
>
> - _edata = .;
> + .edata (NOLOAD) : {
> + _edata = .;
> + }
>
> _magic_sig = ZIMAGE_MAGIC(0x016f2818);
> _magic_start = ZIMAGE_MAGIC(_start);
>
> because the NOLOAD triggers the linker to emit all PROGBITS sections
> before _edata, including unknown ones.
>
> E.g., in my binary, it gives me
>
> 00798020 D __pecoff_data_end
> 00798200 d __ksymtab_sort
> 00798208 B __bss_start
> 00798208 D _edata
this works too:
+++ b/arch/arm/boot/compressed/vmlinux.lds.S
@@ -70,10 +70,6 @@ SECTIONS
.got : { *(.got) }
_got_end = .;
- /* ensure the zImage file size is always a multiple of 64 bits */
- /* (without a dummy byte, ld just ignores the empty section) */
- .pad : { BYTE(0); . = ALIGN(8); }
-
#ifdef CONFIG_EFI_STUB
.data : ALIGN(4096) {
__pecoff_data_start = .;
@@ -93,7 +89,10 @@ SECTIONS
__pecoff_data_rawsize = . - ADDR(.data);
#endif
- _edata = .;
+ /* ensure the zImage file size is always a multiple of 64 bits */
+ .edata : ALIGN(8) {
+ _edata = .;
+ }
339: 006cf200 8 OBJECT LOCAL DEFAULT 9 __ksymtab_sort
...
528: 006cf208 0 NOTYPE GLOBAL DEFAULT 9 _edata
next prev parent reply other threads:[~2017-10-24 9:16 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-18 5:01 [PATCH] ARM: Fix zImage file size not aligned with CONFIG_EFI_STUB enabled Jeffy Chen
2017-10-18 5:01 ` Jeffy Chen
2017-10-18 6:19 ` Chris Zhong
2017-10-18 6:19 ` Chris Zhong
2017-10-22 11:01 ` Ard Biesheuvel
2017-10-22 11:01 ` Ard Biesheuvel
2017-10-22 12:47 ` Russell King - ARM Linux
2017-10-22 12:47 ` Russell King - ARM Linux
2017-10-22 13:01 ` Ard Biesheuvel
2017-10-22 13:01 ` Ard Biesheuvel
2017-10-23 3:26 ` jeffy
2017-10-23 3:26 ` jeffy
2017-10-23 8:50 ` Russell King - ARM Linux
2017-10-23 8:50 ` Russell King - ARM Linux
2017-10-23 10:24 ` jeffy
2017-10-23 10:24 ` jeffy
2017-10-23 10:50 ` Russell King - ARM Linux
2017-10-23 10:50 ` Russell King - ARM Linux
2017-10-23 11:45 ` Russell King - ARM Linux
2017-10-23 11:45 ` Russell King - ARM Linux
2017-10-24 8:09 ` Ard Biesheuvel
2017-10-24 8:09 ` Ard Biesheuvel
2017-10-24 9:09 ` Russell King - ARM Linux
2017-10-24 9:09 ` Russell King - ARM Linux
2017-10-24 9:13 ` Ard Biesheuvel
2017-10-24 9:13 ` Ard Biesheuvel
2017-10-24 9:22 ` Russell King - ARM Linux
2017-10-24 9:22 ` Russell King - ARM Linux
2017-10-24 9:26 ` Ard Biesheuvel
2017-10-24 9:26 ` Ard Biesheuvel
2017-10-24 9:30 ` Ard Biesheuvel
2017-10-24 9:30 ` Ard Biesheuvel
2017-10-24 9:38 ` Russell King - ARM Linux
2017-10-24 9:38 ` Russell King - ARM Linux
2017-10-24 9:44 ` Ard Biesheuvel
2017-10-24 9:44 ` Ard Biesheuvel
2017-10-24 9:54 ` Russell King - ARM Linux
2017-10-24 9:54 ` Russell King - ARM Linux
2017-10-24 10:03 ` Ard Biesheuvel
2017-10-24 10:03 ` Ard Biesheuvel
2017-10-24 9:16 ` jeffy [this message]
2017-10-24 9:16 ` jeffy
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