x86/crypto/sha512-avx2: Standardize stack alignment prologue
authorJosh Poimboeuf <jpoimboe@redhat.com>
Wed, 24 Feb 2021 16:29:24 +0000 (10:29 -0600)
committerJosh Poimboeuf <jpoimboe@redhat.com>
Mon, 19 Apr 2021 17:36:36 +0000 (12:36 -0500)
commitec063e090bd6487097d459bb4272508b78448270
tree94479544aca52583ec0ea592342799dea2be7c85
parentd61684b56edf369f0a6d388088d7c9d59f1618d4
x86/crypto/sha512-avx2: Standardize stack alignment prologue

Use a more standard prologue for saving the stack pointer before
realigning the stack.

This enables ORC unwinding by allowing objtool to understand the stack
realignment.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Tested-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Sami Tolvanen <samitolvanen@google.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Link: https://lore.kernel.org/r/b1a7b29fcfc65d60a3b6e77ef75f4762a5b8488d.1614182415.git.jpoimboe@redhat.com
arch/x86/crypto/sha512-avx2-asm.S