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Date:   Mon, 27 Jul 2020 15:35:10 +1000
From:   Stephen Rothwell <>
To:     Thomas Gleixner <>, Ingo Molnar <>,
        "H. Peter Anvin" <>,
        Peter Zijlstra <>,
        Al Viro <>
Cc:     Linux Next Mailing List <>,
        Linux Kernel Mailing List <>,
        Kan Liang <>
Subject: linux-next: manual merge of the tip tree with the vfs tree

Hi all,

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


between commit:

  c196049cc732 ("x86: switch to ->regset_get()")

from the vfs tree and commit:

  ce711ea3cab9 ("perf/x86/intel/lbr: Support XSAVES/XRSTORS for LBR context switch")

from the tip 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.

Stephen Rothwell

diff --cc arch/x86/include/asm/fpu/xstate.h
index f691ea1bc086,1559554af931..000000000000
--- a/arch/x86/include/asm/fpu/xstate.h
+++ b/arch/x86/include/asm/fpu/xstate.h
@@@ -71,8 -103,9 +103,9 @@@ extern void __init update_regset_xstate
  void *get_xsave_addr(struct xregs_state *xsave, int xfeature_nr);
  const void *get_xsave_field_ptr(int xfeature_nr);
  int using_compacted_format(void);
+ int xfeature_size(int xfeature_nr);
 -int copy_xstate_to_kernel(void *kbuf, struct xregs_state *xsave, unsigned int offset, unsigned int size);
 -int copy_xstate_to_user(void __user *ubuf, struct xregs_state *xsave, unsigned int offset, unsigned int size);
 +struct membuf;
 +void copy_xstate_to_kernel(struct membuf to, struct xregs_state *xsave);
  int copy_kernel_to_xstate(struct xregs_state *xsave, const void *kbuf);
  int copy_user_to_xstate(struct xregs_state *xsave, const void __user *ubuf);
  void copy_supervisor_to_kernel(struct xregs_state *xsave);

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