linux_dsm_epyc7002/arch/x86
Ard Biesheuvel e79a317151 crypto: x86/chacha-sse3 - use unaligned loads for state array
Due to the fact that the x86 port does not support allocating objects
on the stack with an alignment that exceeds 8 bytes, we have a rather
ugly hack in the x86 code for ChaCha to ensure that the state array is
aligned to 16 bytes, allowing the SSE3 implementation of the algorithm
to use aligned loads.

Given that the performance benefit of using of aligned loads appears to
be limited (~0.25% for 1k blocks using tcrypt on a Corei7-8650U), and
the fact that this hack has leaked into generic ChaCha code, let's just
remove it.

Cc: Martin Willi <martin@strongswan.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Martin Willi <martin@strongswan.org>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-07-16 21:49:04 +10:00
..
boot Rebase locking/kcsan to locking/urgent 2020-06-11 20:02:46 +02:00
configs compiler: remove CONFIG_OPTIMIZE_INLINING entirely 2020-04-07 10:43:42 -07:00
crypto crypto: x86/chacha-sse3 - use unaligned loads for state array 2020-07-16 21:49:04 +10:00
entry The X86 entry, exception and interrupt code rework 2020-06-13 10:05:47 -07:00
events treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
hyperv x86/entry: Convert various hypervisor vectors to IDTENTRY_SYSVEC 2020-06-11 15:15:15 +02:00
ia32 Merge branch 'exec-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2020-06-04 14:07:08 -07:00
include RAS updates from Borislav Petkov: 2020-06-13 10:21:00 -07:00
kernel RAS updates from Borislav Petkov: 2020-06-13 10:21:00 -07:00
kvm Kbuild updates for v5.8 (2nd) 2020-06-13 13:29:16 -07:00
lib Rebase locking/kcsan to locking/urgent 2020-06-11 20:02:46 +02:00
math-emu
mm The X86 entry, exception and interrupt code rework 2020-06-13 10:05:47 -07:00
net bpf, i386: Remove unneeded conversion to bool 2020-05-07 16:29:14 +02:00
oprofile
pci Merge branch 'pci/virtualization' 2020-06-04 12:59:13 -05:00
platform x86/entry: Convert various system vectors 2020-06-11 15:15:14 +02:00
power mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
purgatory Merge branch 'x86/kdump' into locking/kcsan, to resolve conflicts 2020-03-21 09:24:41 +01:00
ras treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
realmode Rebase locking/kcsan to locking/urgent 2020-06-11 20:02:46 +02:00
tools .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
um mmap locking API: use coccinelle to convert mmap_sem rwsem call sites 2020-06-09 09:39:14 -07:00
video
xen xen: Move xen_setup_callback_vector() definition to include/xen/hvm.h 2020-06-11 15:15:19 +02:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
Kbuild
Kconfig Kbuild updates for v5.8 (2nd) 2020-06-13 13:29:16 -07:00
Kconfig.assembler x86/delay: Introduce TPAUSE delay 2020-05-07 16:06:20 +02:00
Kconfig.cpu treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
Kconfig.debug treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
Makefile x86/boot/build: Make 'make bzlilo' not depend on vmlinux or $(obj)/bzImage 2020-04-21 18:10:28 +02:00
Makefile_32.cpu
Makefile.um