[RFC PATCH 08/11] powerpc: Add and use LPPACA_SIZE constant
From: Thiago Jung Bauermann <hidden>
Date: 2018-08-24 16:26:41
Also in:
linux-iommu, lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
Helps document what the hard-coded number means. Suggested-by: Alexey Kardashevskiy <redacted> Signed-off-by: Thiago Jung Bauermann <redacted> --- arch/powerpc/kernel/paca.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c
index 0ee3e6d50f28..1edf8695019d 100644
--- a/arch/powerpc/kernel/paca.c
+++ b/arch/powerpc/kernel/paca.c@@ -24,6 +24,8 @@ #define boot_cpuid 0 #endif +#define LPPACA_SIZE 0x400 + static void *__init alloc_paca_data(unsigned long size, unsigned long align, unsigned long limit, int cpu) {
@@ -70,7 +72,7 @@ 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,
@@ -80,14 +82,13 @@ 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(LPPACA_SIZE < sizeof(struct lppaca)); 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;