Commit fc8562c9 authored by Nicholas Piggin's avatar Nicholas Piggin Committed by Michael Ellerman
Browse files

powerpc/32: Remove sync from _switch 



64-bit has removed the sync from _switch since commit 9145effd
("powerpc/64: Drop explicit hwsync in context switch"). The same
logic there should apply to 32-bit. Remove the sync and replace with
a placeholder comment (32 and 64 will be merged with a later change).

Signed-off-by: default avatarNicholas Piggin <npiggin@gmail.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230606132447.315714-4-npiggin@gmail.com
parent 0eb8088b

arch/powerpc/kernel/entry_32.S

+1 −7
Original line number Diff line number Diff line
@@ -243,13 +243,7 @@ _GLOBAL(_switch) 
	stw	r10,_CCR(r1)

	stw	r1,KSP(r3)	/* Set old stack pointer */



#ifdef CONFIG_SMP

	/* We need a sync somewhere here to make sure that if the

	 * previous task gets rescheduled on another CPU, it sees all

	 * stores it has performed on this one.

	 */

	sync

#endif /* CONFIG_SMP */

	/* The sync for SMP migration is taken care of, see entry_64.S */



	tophys(r0,r4)

	mtspr	SPRN_SPRG_THREAD,r0	/* Update current THREAD phys addr */