Commit b09049c5 authored by Christophe Leroy's avatar Christophe Leroy Committed by Michael Ellerman
Browse files

powerpc: Only pad struct pt_regs when needed 



If neither KUAP nor PPC64 is selected, there is nothing in the second
union of struct pt_regs, so the alignment padding is waste of memory.

Signed-off-by: default avatarChristophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/d536bbc46094f66b24d3017343be25164f232933.1620307840.git.christophe.leroy@csgroup.eu
parent 8af8d72d

arch/powerpc/include/asm/ptrace.h

+2 −1
Original line number Diff line number Diff line
@@ -47,7 +47,7 @@ struct pt_regs 
			unsigned long result;

		};

	};



#if defined(CONFIG_PPC64) || defined(CONFIG_PPC_KUAP)

	union {

		struct {

#ifdef CONFIG_PPC64
@@ -67,6 +67,7 @@ struct pt_regs 
		};

		unsigned long __pad[4];	/* Maintain 16 byte interrupt stack alignment */

	};

#endif

};

#endif