From: Balbir Singh <bsingharora@gmail.com>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH for-4.8 07/12] powerpc/mm/hash: Update SDR1 size encoding as documented in ISA 3.0
Date: Thu, 14 Jul 2016 14:29:02 +1000 [thread overview]
Message-ID: <20160714042902.GH18277@balbir.ozlabs.ibm.com> (raw)
In-Reply-To: <1468402531-4914-8-git-send-email-aneesh.kumar@linux.vnet.ibm.com>
On Wed, Jul 13, 2016 at 03:05:26PM +0530, Aneesh Kumar K.V wrote:
> ISA 3.0 document hash table size in bytes = 2^(HTABSIZE + 18)
>
> No functionality change by this patch.
>
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
> ---
> arch/powerpc/mm/hash_utils_64.c | 9 ++++-----
> 1 file changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
> index b90fe2480089..47d59a1f12f1 100644
> --- a/arch/powerpc/mm/hash_utils_64.c
> +++ b/arch/powerpc/mm/hash_utils_64.c
> @@ -714,10 +714,9 @@ int remove_section_mapping(unsigned long start, unsigned long end)
> #endif /* CONFIG_MEMORY_HOTPLUG */
>
> static void __init hash_init_partition_table(phys_addr_t hash_table,
> - unsigned long pteg_count)
> + unsigned long htab_size)
> {
> unsigned long ps_field;
> - unsigned long htab_size;
> unsigned long patb_size = 1UL << PATB_SIZE_SHIFT;
>
> /*
> @@ -725,7 +724,7 @@ static void __init hash_init_partition_table(phys_addr_t hash_table,
> * We can ignore that for lpid 0
> */
> ps_field = 0;
> - htab_size = __ilog2(pteg_count) - 11;
> + htab_size = __ilog2(htab_size) - 18;
I was wondering if we should just do
#define HPT_MIN_SIZE_SHIFT 18
and then use it instead?
next prev parent reply other threads:[~2016-07-14 4:29 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-13 9:35 [PATCH for-4.8_set1 00/12] Radix fixes for 4.8 Aneesh Kumar K.V
2016-07-13 9:35 ` [PATCH for-4.8 01/12] Fix .long's in mm/tlb-radix.c to more meaningful Aneesh Kumar K.V
2016-07-17 10:28 ` [for-4.8,01/12] " Michael Ellerman
2016-07-13 9:35 ` [PATCH for-4.8 02/12] powerpc/mm/radix: Update LPCR HR bit as per ISA Aneesh Kumar K.V
2016-07-14 3:30 ` Balbir Singh
2016-07-13 9:35 ` [PATCH for-4.8 03/12] powerpc/mm: use _raw variant of page table accessors Aneesh Kumar K.V
2016-07-14 3:42 ` Balbir Singh
2016-07-15 11:42 ` David Laight
2016-07-17 5:22 ` Anton Blanchard
2016-07-13 9:35 ` [PATCH for-4.8 04/12] powerpc/mm: Compile out radix related functions if RADIX_MMU is disabled Aneesh Kumar K.V
2016-07-13 9:35 ` [PATCH for-4.8 05/12] powerpc/mm: Clear top 16 bits of va only on older cpus Aneesh Kumar K.V
2016-07-14 3:50 ` Balbir Singh
2016-07-13 9:35 ` [PATCH for-4.8 06/12] powerpc/mm: Print formation regarding the the MMU mode Aneesh Kumar K.V
2016-07-14 4:03 ` Balbir Singh
2016-07-13 9:35 ` [PATCH for-4.8 07/12] powerpc/mm/hash: Update SDR1 size encoding as documented in ISA 3.0 Aneesh Kumar K.V
2016-07-14 4:29 ` Balbir Singh [this message]
2016-07-13 9:35 ` [PATCH for-4.8 08/12] powerpc/mm/radix: Update PID switch sequence Aneesh Kumar K.V
2016-07-13 9:35 ` [PATCH for-4.8 09/12] powerpc/mm/radix: Update machine call back to support new HCALL Aneesh Kumar K.V
2016-07-13 9:35 ` [PATCH for-4.8 10/12] powerpc/mm/radix: Add LPID based tlb flush helpers Aneesh Kumar K.V
2016-07-14 5:12 ` Balbir Singh
2016-07-13 9:35 ` [PATCH for-4.8 11/12] powerpc/mm: Cleanup LPCR defines Aneesh Kumar K.V
2016-07-13 9:35 ` [PATCH for-4.8 12/12] powerpc/mm/radix: Add a kernel command line to disable radix Aneesh Kumar K.V
2016-07-14 5:02 ` Balbir Singh
2016-07-14 8:43 ` Aneesh Kumar K.V
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