Nicholas Piggin 66f93c5a02 powerpc/64: Fix kernel stack 16-byte alignment ... Commit 4c2de74cc8 ("powerpc/64: Interrupts save PPR on stack rather than thread_struct") changed sizeof(struct pt_regs) % 16 from 0 to 8, which causes the interrupt frame allocation on kernel entry to put the kernel stack out of alignment. Quadword (16-byte) alignment for the stack is required by both the 64-bit v1 ABI (v1.9 § 3.2.2) and the 64-bit v2 ABI (v1.1 § 2.2.2.1). Add a pad field to fix alignment, and add a BUILD_BUG_ON to catch this in future. Fixes: 4c2de74cc8 ("powerpc/64: Interrupts save PPR on stack rather than thread_struct") Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2018-11-15 14:48:43 +11:00
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asm	powerpc/64: Fix kernel stack 16-byte alignment	2018-11-15 14:48:43 +11:00
uapi/asm	TTY/Serial patches for 4.20-rc1	2018-10-29 10:42:20 -07:00