Hi Sasha,
We need to keep track of which Spectre patches have been backported and which haven't. David Long has been doing the backport work, which doesn't include all the patches in my present spectre branch. You've picked up the last five, meaning there's a bunch in the middle of the entire series which haven't yet been considered - for example, the Spectre variant 1.1 patches.
The entire series of 32-bit ARM Spectre patches can be listed in mainline via:
$ git log v4.16..383fb3ee8024
where almost all of those need to be applied to stable kernels, with possible manual back-porting where they don't apply.
On Thu, Nov 22, 2018 at 02:54:41PM -0500, Sasha Levin wrote:
From: Russell King rmk+kernel@armlinux.org.uk
[ 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