linux-kernel - linux-next: manual merge of the arm64 tree with Linus' tree

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Date:   Fri, 12 Jan 2018 08:23:59 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Catalin Marinas <catalin.marinas@....com>
Cc:     Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Dave Martin <Dave.Martin@....com>,
        Will Deacon <will.deacon@....com>
Subject: linux-next: manual merge of the arm64 tree with Linus' tree

Hi Catalin,

Today's linux-next merge of the arm64 tree got a conflict in:

  arch/arm64/kernel/cpufeature.c

between commit:

  3fab39997a98 ("arm64/sve: Report SVE to userspace via CPUID only if supported")

from Linus' tree and commits:

  179a56f6f9fb ("arm64: Take into account ID_AA64PFR0_EL1.CSV3")
  0f15adbb2861 ("arm64: Add skeleton to harden the branch predictor against aliasing attacks")

from the arm64 tree.

I fixed it up (see below) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging.  You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.

-- 
Cheers,
Stephen Rothwell

diff --cc arch/arm64/kernel/cpufeature.c
index a73a5928f09b,da6722db50b0..000000000000
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@@ -145,8 -146,9 +146,10 @@@ static const struct arm64_ftr_bits ftr_
  };
  
  static const struct arm64_ftr_bits ftr_id_aa64pfr0[] = {
+ 	ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64PFR0_CSV3_SHIFT, 4, 0),
+ 	ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64PFR0_CSV2_SHIFT, 4, 0),
 -	ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_SVE_SHIFT, 4, 0),
 +	ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_SVE),
 +				   FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_SVE_SHIFT, 4, 0),
  	ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_GIC_SHIFT, 4, 0),
  	S_ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_ASIMD_SHIFT, 4, ID_AA64PFR0_ASIMD_NI),
  	S_ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_FP_SHIFT, 4, ID_AA64PFR0_FP_NI),