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Commit e311a92d authored by Thiago Jung Bauermann's avatar Thiago Jung Bauermann Committed by Michael Ellerman
Browse files

powerpc/pseries: Add and use LPPACA_SIZE constant 



Helps document what the hard-coded number means.

Also take the opportunity to fix an #endif comment.

Suggested-by: default avatarAlexey Kardashevskiy <aik@linux.ibm.com>
Signed-off-by: default avatarThiago Jung Bauermann <bauerman@linux.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190820021326.6884-8-bauerman@linux.ibm.com
parent 7f70c381

arch/powerpc/kernel/paca.c

+6 −5
Original line number Diff line number Diff line
@@ -52,6 +52,8 @@ static void *__init alloc_paca_data(unsigned long size, unsigned long align, 


#ifdef CONFIG_PPC_PSERIES



#define LPPACA_SIZE 0x400



/*

 * See asm/lppaca.h for more detail.

 *
@@ -65,7 +67,7 @@ static inline void init_lppaca(struct lppaca *lppaca) 


	*lppaca = (struct lppaca) {

		.desc = cpu_to_be32(0xd397d781),	/* "LpPa" */

		.size = cpu_to_be16(0x400),

		.size = cpu_to_be16(LPPACA_SIZE),

		.fpregs_in_use = 1,

		.slb_count = cpu_to_be16(64),

		.vmxregs_in_use = 0,
@@ -75,19 +77,18 @@ static inline void init_lppaca(struct lppaca *lppaca) 
static struct lppaca * __init new_lppaca(int cpu, unsigned long limit)

{

	struct lppaca *lp;

	size_t size = 0x400;



	BUILD_BUG_ON(size < sizeof(struct lppaca));

	BUILD_BUG_ON(sizeof(struct lppaca) > LPPACA_SIZE);



	if (early_cpu_has_feature(CPU_FTR_HVMODE))

		return NULL;



	lp = alloc_paca_data(size, 0x400, limit, cpu);

	lp = alloc_paca_data(LPPACA_SIZE, 0x400, limit, cpu);

	init_lppaca(lp);



	return lp;

}

#endif /* CONFIG_PPC_BOOK3S */

#endif /* CONFIG_PPC_PSERIES */



#ifdef CONFIG_PPC_BOOK3S_64