From: Thiago Jung Bauermann <bauerman@linux.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
Alexey Kardashevskiy <aik@ozlabs.ru>,
Anshuman Khandual <anshuman.linux@gmail.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Christoph Hellwig <hch@lst.de>,
Michael Ellerman <mpe@ellerman.id.au>,
Mike Anderson <andmike@linux.ibm.com>,
Paul Mackerras <paulus@samba.org>, Ram Pai <linuxram@us.ibm.com>,
Thiago Jung Bauermann <bauerman@linux.ibm.com>
Subject: [RFC PATCH 08/11] powerpc: Add and use LPPACA_SIZE constant
Date: Thu, 23 Aug 2018 23:59:30 -0300 [thread overview]
Message-ID: <20180824025933.24319-9-bauerman@linux.ibm.com> (raw)
In-Reply-To: <20180824025933.24319-1-bauerman@linux.ibm.com>
Helps document what the hard-coded number means.
Suggested-by: Alexey Kardashevskiy <aik@linux.ibm.com>
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com>
---
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;
next prev parent reply other threads:[~2018-08-24 2:59 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-24 2:59 [RFC PATCH 00/11] Secure Virtual Machine Enablement Thiago Jung Bauermann
2018-08-24 2:59 ` [RFC PATCH 01/11] powerpc/svm: Detect Secure Virtual Machine (SVM) platform Thiago Jung Bauermann
2018-08-24 2:59 ` [RFC PATCH 02/11] powerpc/svm: Select CONFIG_DMA_DIRECT_OPS and CONFIG_SWIOTLB Thiago Jung Bauermann
2018-08-24 2:59 ` [RFC PATCH 03/11] powerpc/svm: Add memory conversion (shared/secure) helper functions Thiago Jung Bauermann
2018-08-24 2:59 ` [RFC PATCH 04/11] powerpc/svm: Convert SWIOTLB buffers to shared memory Thiago Jung Bauermann
2018-08-24 2:59 ` [RFC PATCH 05/11] powerpc/svm: Don't release SWIOTLB buffers on secure guests Thiago Jung Bauermann
2018-08-24 2:59 ` [RFC PATCH 06/11] powerpc/svm: Use SWIOTLB DMA API for all virtio devices Thiago Jung Bauermann
2018-08-24 2:59 ` [RFC PATCH 07/11] powerpc/svm: Use shared memory for Debug Trace Log (DTL) Thiago Jung Bauermann
2018-08-24 2:59 ` Thiago Jung Bauermann [this message]
2018-08-24 2:59 ` [RFC PATCH 09/11] powerpc/svm: Use shared memory for LPPACA structures Thiago Jung Bauermann
2018-08-24 2:59 ` [RFC PATCH 10/11] powerpc/svm: Force the use of bounce buffers Thiago Jung Bauermann
[not found] ` <20180824025933.24319-11-bauerman-tEXmvtCZX7AybS5Ee8rs3A@public.gmane.org>
2018-08-24 6:00 ` Christoph Hellwig
2018-08-24 23:38 ` Thiago Jung Bauermann
2018-08-24 2:59 ` [RFC PATCH 11/11] powerpc/svm: Increase SWIOTLB buffer size Thiago Jung Bauermann
[not found] ` <20180824025933.24319-12-bauerman-tEXmvtCZX7AybS5Ee8rs3A@public.gmane.org>
2018-08-25 8:55 ` Christoph Hellwig
[not found] ` <20180824025933.24319-1-bauerman-tEXmvtCZX7AybS5Ee8rs3A@public.gmane.org>
2018-08-24 6:00 ` [RFC PATCH 00/11] Secure Virtual Machine Enablement Christoph Hellwig
2018-08-24 16:25 Thiago Jung Bauermann
2018-08-24 16:25 ` [RFC PATCH 08/11] powerpc: Add and use LPPACA_SIZE constant Thiago Jung Bauermann
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