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SubjectRe: [PATCH 3.18 14/83] ARM: make lookup_processor_type() non-__init
Hi,

As I've already fed back to Sascha about this, this patch on its own
does not fix anything, and is not a stable kernel candidate without
a patch that makes use of it (iow, the spectre fixes.) It is a
preparatory patch for mainline commit 383fb3ee8024.

Every commit in:

$ git rev-list v4.16..383fb3ee8024

are the ARM spectre fixes, which are being back-ported by David Long.

Please do not cherry-pick commits from within this series for _any_
stable kernel, but please wait for David to send you the back-ported
patches.

Thanks.

On Thu, Nov 29, 2018 at 03:11:32PM +0100, Greg Kroah-Hartman wrote:
> 3.18-stable review patch. If anyone has any objections, please let me know.
>
> ------------------
>
> [ Upstream commit 899a42f836678a595f7d2bc36a5a0c2b03d08cbc ]
>
> Move lookup_processor_type() out of the __init section so it is callable
> from (eg) the secondary startup code during hotplug.
>
> Reviewed-by: Julien Thierry <julien.thierry@arm.com>
> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
> Signed-off-by: Sasha Levin <sashal@kernel.org>
> ---
> arch/arm/kernel/head-common.S | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/kernel/head-common.S b/arch/arm/kernel/head-common.S
> index 8733012d231f..7e662bdd5cb3 100644
> --- a/arch/arm/kernel/head-common.S
> +++ b/arch/arm/kernel/head-common.S
> @@ -122,6 +122,9 @@ __mmap_switched_data:
> .long init_thread_union + THREAD_START_SP @ sp
> .size __mmap_switched_data, . - __mmap_switched_data
>
> + __FINIT
> + .text
> +
> /*
> * This provides a C-API version of __lookup_processor_type
> */
> @@ -133,9 +136,6 @@ ENTRY(lookup_processor_type)
> ldmfd sp!, {r4 - r6, r9, pc}
> ENDPROC(lookup_processor_type)
>
> - __FINIT
> - .text
> -
> /*
> * Read processor ID register (CP#15, CR0), and look up in the linker-built
> * supported processor list. Note that we can't use the absolute addresses
> --
> 2.17.1
>
>
>

--
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