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Re: [PATCH v4 21/24] openrisc: head: Move init strings to rodata section

From Stafford Horne <shorne@gmail.com>
Newsgroups linux.kernel
Subject Re: [PATCH v4 21/24] openrisc: head: Move init strings to rodata section
Date 2017-02-24 21:20 +0100
Message-ID <teuvn-5m8-3@gated-at.bofh.it> (permalink)
References <tefPH-3gU-5@gated-at.bofh.it> <tefPI-3gU-41@gated-at.bofh.it> <tekPo-6Kt-21@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Fri, Feb 24, 2017 at 10:28:46AM +0100, Jonas Bonn wrote:
> On 02/24/2017 05:32 AM, Stafford Horne wrote:
> > The strings used during the head/init phase of openrisc bootup were
> > stored in the executable section of the binary.
> > 
> > This causes compilation to fail when using CONFIG_DEBUG_INFO with
> > error:
> >   Error: unaligned opcodes detected in executable segment
> > 
> > Also, this patch removes unused strings.
> This should be two patches:  one that removes unused strings and one that
> switches the data section.
> 
> Works like "Also" usually indicate that you are doing too much in your patch
> and you need to split it up.

Hi Jonas,

Right, I'll split this one.  I was debating that due to the size. But
it would be right in this case.

Also, I use the word also a lot :)

-Stafford

> > 
> > Signed-off-by: Stafford Horne <shorne@gmail.com>
> > ---
> >   arch/openrisc/kernel/head.S | 12 +-----------
> >   1 file changed, 1 insertion(+), 11 deletions(-)
> > 
> > diff --git a/arch/openrisc/kernel/head.S b/arch/openrisc/kernel/head.S
> > index a22f1fc..573e131 100644
> > --- a/arch/openrisc/kernel/head.S
> > +++ b/arch/openrisc/kernel/head.S
> > @@ -1530,11 +1530,7 @@ ENTRY(_early_uart_init)
> >   	l.jr	r9
> >   	l.nop
> > -_string_copying_linux:
> > -	.string "\n\n\n\n\n\rCopying Linux... \0"
> > -
> > -_string_ok_booting:
> > -	.string "Ok, booting the kernel.\n\r\0"
> > +	.section .rodata
> >   _string_unhandled_exception:
> >   	.string "\n\rRunarunaround: Unhandled exception 0x\0"
> > @@ -1545,12 +1541,6 @@ _string_epc_prefix:
> >   _string_nl:
> >   	.string "\n\r\0"
> > -	.global	_string_esr_irq_bug
> > -_string_esr_irq_bug:
> > -	.string "\n\rESR external interrupt bug, for details look into entry.S\n\r\0"
> > -
> > -
> > -
> >   /* ========================================[ page aligned structures ]=== */
> >   /*
> 
> 

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Thread

[PATCH v4 00/24] OpenRISC patches for 4.11 Stafford Horne <shorne@gmail.com> - 2017-02-24 05:40 +0100
  [PATCH v4 23/24] openrisc: Export ioremap symbols used by modules Stafford Horne <shorne@gmail.com> - 2017-02-24 05:40 +0100
  [PATCH v4 13/24] openrisc: Initial support for the idle state Stafford Horne <shorne@gmail.com> - 2017-02-24 05:40 +0100
  [PATCH v4 18/24] scripts/checkstack.pl: Add openrisc support Stafford Horne <shorne@gmail.com> - 2017-02-24 05:40 +0100
    Re: [PATCH v4 18/24] scripts/checkstack.pl: Add openrisc support Tobias Klauser <tklauser@distanz.ch> - 2017-02-24 16:00 +0100
      Re: [PATCH v4 18/24] scripts/checkstack.pl: Add openrisc support Stafford Horne <shorne@gmail.com> - 2017-02-24 20:40 +0100
  [PATCH v4 22/24] arch/openrisc/lib/memcpy.c: use correct OR1200 option Stafford Horne <shorne@gmail.com> - 2017-02-24 05:40 +0100
    Re: [PATCH v4 22/24] arch/openrisc/lib/memcpy.c: use correct OR1200  option Jonas Bonn <jonas@southpole.se> - 2017-02-24 10:50 +0100
      Re: [PATCH v4 22/24] arch/openrisc/lib/memcpy.c: use correct OR1200  option Stafford Horne <shorne@gmail.com> - 2017-02-24 21:00 +0100
  [PATCH v4 08/24] openrisc: add cmpxchg and xchg implementations Stafford Horne <shorne@gmail.com> - 2017-02-24 05:40 +0100
  [PATCH v4 20/24] openrisc: entry: Fix delay slot detection Stafford Horne <shorne@gmail.com> - 2017-02-24 05:40 +0100
    Re: [PATCH v4 20/24] openrisc: entry: Fix delay slot detection Jonas Bonn <jonas@southpole.se> - 2017-02-24 11:00 +0100
      Re: [PATCH v4 20/24] openrisc: entry: Fix delay slot detection Stafford Horne <shorne@gmail.com> - 2017-02-24 21:20 +0100
  [PATCH v4 09/24] openrisc: add optimized atomic operations Stafford Horne <shorne@gmail.com> - 2017-02-24 05:40 +0100
  [PATCH v4 04/24] openrisc: head: use THREAD_SIZE instead of magic constant Stafford Horne <shorne@gmail.com> - 2017-02-24 05:40 +0100
  [PATCH v4 07/24] openrisc: add atomic bitops Stafford Horne <shorne@gmail.com> - 2017-02-24 05:40 +0100
    Re: [PATCH v4 07/24] openrisc: add atomic bitops Peter Zijlstra <peterz@infradead.org> - 2017-02-24 12:00 +0100
      Re: [PATCH v4 07/24] openrisc: add atomic bitops Stafford Horne <shorne@gmail.com> - 2017-02-24 20:30 +0100
  [PATCH v4 11/24] openrisc: remove unnecessary stddef.h include Stafford Horne <shorne@gmail.com> - 2017-02-24 05:40 +0100
  [PATCH v4 01/24] openrisc: use SPARSE_IRQ Stafford Horne <shorne@gmail.com> - 2017-02-24 05:40 +0100
  [PATCH v4 21/24] openrisc: head: Move init strings to rodata section Stafford Horne <shorne@gmail.com> - 2017-02-24 05:40 +0100
    Re: [PATCH v4 21/24] openrisc: head: Move init strings to rodata  section Jonas Bonn <jonas@southpole.se> - 2017-02-24 11:00 +0100
      Re: [PATCH v4 21/24] openrisc: head: Move init strings to rodata  section Stafford Horne <shorne@gmail.com> - 2017-02-24 21:20 +0100
  [PATCH v4 05/24] openrisc: head: refactor out tlb flush into it's own function Stafford Horne <shorne@gmail.com> - 2017-02-24 05:40 +0100
    Re: [PATCH v4 05/24] openrisc: head: refactor out tlb flush into it's  own function Jonas Bonn <jonas@southpole.se> - 2017-02-24 11:00 +0100
      Re: [PATCH v4 05/24] openrisc: head: refactor out tlb flush into  it's own function Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> - 2017-02-24 12:10 +0100
        Re: [PATCH v4 05/24] openrisc: head: refactor out tlb flush into it's  own function Jonas Bonn <jonas@southpole.se> - 2017-02-24 13:50 +0100
          Re: [PATCH v4 05/24] openrisc: head: refactor out tlb flush into  it's own function Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> - 2017-02-24 15:00 +0100
            Re: [PATCH v4 05/24] openrisc: head: refactor out tlb flush into  it's own function Stafford Horne <shorne@gmail.com> - 2017-02-24 20:30 +0100
  [PATCH v4 24/24] openrisc: head: Init r0 to 0 on start Stafford Horne <shorne@gmail.com> - 2017-02-24 05:40 +0100
    Re: [PATCH v4 24/24] openrisc: head: Init r0 to 0 on start Jonas Bonn <jonas@southpole.se> - 2017-02-24 11:10 +0100
      Re: [PATCH v4 24/24] openrisc: head: Init r0 to 0 on start Stafford Horne <shorne@gmail.com> - 2017-02-24 20:40 +0100
  [PATCH v4 17/24] MAINTAINERS: Add the openrisc official repository Stafford Horne <shorne@gmail.com> - 2017-02-24 05:40 +0100
  [PATCH v4 12/24] openrisc: Fix the bitmask for the unit present register Stafford Horne <shorne@gmail.com> - 2017-02-24 05:40 +0100
  [PATCH v4 06/24] openrisc: add l.lwa/l.swa emulation Stafford Horne <shorne@gmail.com> - 2017-02-24 05:40 +0100
    Re: [PATCH v4 06/24] openrisc: add l.lwa/l.swa emulation Jonas Bonn <jonas@southpole.se> - 2017-02-24 10:50 +0100
      Re: [PATCH v4 06/24] openrisc: add l.lwa/l.swa emulation Stafford Horne <shorne@gmail.com> - 2017-02-24 21:00 +0100
  [PATCH v4 10/24] openrisc: add futex_atomic_* implementations Stafford Horne <shorne@gmail.com> - 2017-02-24 05:40 +0100
  [PATCH v4 03/24] openrisc: tlb miss handler optimizations Stafford Horne <shorne@gmail.com> - 2017-02-24 05:40 +0100
  [PATCH v4 19/24] openrisc: entry: Whitespace and comment cleanups Stafford Horne <shorne@gmail.com> - 2017-02-24 05:40 +0100
    Re: [PATCH v4 19/24] openrisc: entry: Whitespace and comment cleanups Jonas Bonn <jonas@southpole.se> - 2017-02-24 10:50 +0100
      Re: [PATCH v4 19/24] openrisc: entry: Whitespace and comment cleanups Stafford Horne <shorne@gmail.com> - 2017-02-24 21:40 +0100
  [PATCH v4 15/24] openrisc: Add optimized memcpy routine Stafford Horne <shorne@gmail.com> - 2017-02-24 05:50 +0100
  [PATCH v4 16/24] openrisc: Add .gitignore Stafford Horne <shorne@gmail.com> - 2017-02-24 05:50 +0100
  [PATCH v4 14/24] openrisc: Add optimized memset Stafford Horne <shorne@gmail.com> - 2017-02-24 05:50 +0100

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