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Subject[RFC][CFT][PATCHSET v2] saner calling conventions for csum-and-copy primitives
Updated version pushed.  Changes since the first variant:

* xtensa fix from Max Filippov (regression from last cycle, will
send to Linus tonight)
* csum_partial_copy_nocheck() got its default variants consolidated
* sparc64 idiotic typo fixed (along with the broken build script
I'd been using)
* commit messages updated (mostly in "saner calling conventions for
csum_and_copy_..._user()")

The branch is still based at 5.8-rc1 and can be found in
git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git work.csum_and_copy
Individual patches will go in followups.

Shortlog:
Al Viro (19):
skb_copy_and_csum_bits(): don't bother with the last argument
icmp_push_reply(): reorder adding the checksum up
unify generic instances of csum_partial_copy_nocheck()
csum_partial_copy_nocheck(): drop the last argument
csum_and_copy_..._user(): pass 0xffffffff instead of 0 as initial sum
saner calling conventions for csum_and_copy_..._user()
alpha: propagate the calling convention changes down to csum_partial_copy.c helpers
arm: propagate the calling convention changes down to csum_partial_copy_from_user()
m68k: get rid of zeroing destination on error in csum_and_copy_from_user()
sh: propage the calling conventions change down to csum_partial_copy_generic()
i386: propagate the calling conventions change down to csum_partial_copy_generic()
sparc32: propagate the calling conventions change down to __csum_partial_copy_sparc_generic()
mips: csum_and_copy_{to,from}_user() are never called under KERNEL_DS
mips: __csum_partial_copy_kernel() has no users left
mips: propagate the calling convention change down into __csum_partial_copy_..._user()
xtensa: propagate the calling conventions change down into csum_partial_copy_generic()
sparc64: propagate the calling convention changes down to __csum_partial_copy_...()
amd64: switch csum_partial_copy_generic() to new calling conventions
ppc: propagate the calling conventions change down to csum_partial_copy_generic()

Max Filippov (1):
xtensa: fix access check in csum_and_copy_from_user

Diffstat:
arch/alpha/include/asm/checksum.h | 5 +-
arch/alpha/lib/csum_partial_copy.c | 164 ++++++++-----------
arch/arm/include/asm/checksum.h | 17 +-
arch/arm/lib/csumpartialcopy.S | 4 +-
arch/arm/lib/csumpartialcopygeneric.S | 1 +
arch/arm/lib/csumpartialcopyuser.S | 26 +--
arch/c6x/include/asm/checksum.h | 6 +
arch/hexagon/include/asm/checksum.h | 11 --
arch/hexagon/lib/checksum.c | 11 --
arch/ia64/include/asm/checksum.h | 3 -
arch/ia64/lib/csum_partial_copy.c | 15 --
arch/m68k/include/asm/checksum.h | 7 +-
arch/m68k/lib/checksum.c | 88 +++-------
arch/mips/include/asm/checksum.h | 68 ++------
arch/mips/lib/csum_partial.S | 261 ++++++++++--------------------
arch/nios2/include/asm/checksum.h | 5 -
arch/parisc/include/asm/checksum.h | 28 ----
arch/parisc/lib/checksum.c | 17 --
arch/powerpc/include/asm/checksum.h | 13 +-
arch/powerpc/lib/checksum_32.S | 74 ++++-----
arch/powerpc/lib/checksum_64.S | 37 ++---
arch/powerpc/lib/checksum_wrappers.c | 74 ++-------
arch/s390/include/asm/checksum.h | 7 -
arch/sh/include/asm/checksum_32.h | 36 ++---
arch/sh/lib/checksum.S | 119 ++++----------
arch/sparc/include/asm/checksum.h | 2 +
arch/sparc/include/asm/checksum_32.h | 70 ++------
arch/sparc/include/asm/checksum_64.h | 39 +----
arch/sparc/lib/checksum_32.S | 202 +++++------------------
arch/sparc/lib/csum_copy.S | 3 +-
arch/sparc/lib/csum_copy_from_user.S | 4 +-
arch/sparc/lib/csum_copy_to_user.S | 4 +-
arch/sparc/mm/fault_32.c | 6 +-
arch/x86/include/asm/checksum.h | 1 +
arch/x86/include/asm/checksum_32.h | 40 ++---
arch/x86/include/asm/checksum_64.h | 14 +-
arch/x86/lib/checksum_32.S | 117 +++++---------
arch/x86/lib/csum-copy_64.S | 140 +++++++++-------
arch/x86/lib/csum-wrappers_64.c | 86 ++--------
arch/x86/um/asm/checksum.h | 16 --
arch/x86/um/asm/checksum_32.h | 23 ---
arch/xtensa/include/asm/checksum.h | 34 ++--
arch/xtensa/lib/checksum.S | 67 ++------
drivers/net/ethernet/3com/typhoon.c | 3 +-
drivers/net/ethernet/sun/sunvnet_common.c | 2 +-
include/asm-generic/checksum.h | 14 --
include/linux/skbuff.h | 2 +-
include/net/checksum.h | 22 ++-
lib/checksum.c | 11 --
lib/iov_iter.c | 21 ++-
net/core/skbuff.c | 13 +-
net/ipv4/icmp.c | 10 +-
net/ipv4/ip_output.c | 6 +-
net/ipv4/raw.c | 2 +-
net/ipv6/icmp.c | 4 +-
net/ipv6/ip6_output.c | 2 +-
net/ipv6/raw.c | 2 +-
net/sunrpc/socklib.c | 2 +-
58 files changed, 615 insertions(+), 1466 deletions(-)

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