From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
Paul Mackerras <paulus@ozlabs.org>
Cc: mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v5 1/7] powerpc/mm: update ptep_set_access_flag to not do full mm tlb flush
Date: Fri, 25 Nov 2016 19:22:47 +1100 [thread overview]
Message-ID: <1480062167.11342.2.camel@kernel.crashing.org> (raw)
In-Reply-To: <87d1hkjaya.fsf@linux.vnet.ibm.com>
On Fri, 2016-11-25 at 12:35 +0530, Aneesh Kumar K.V wrote:
> Now the question will be how will we support _PAGE_DEVMAP (for
> nvidmm).
> We don't have free software pte bits after we make the above change.
>
> NOTE: We do have 3 reserved bits(ppc bit 4-6 ) can we use that ?
Yes, I think we can, at least as long as it's a DD1 thing only, future
processors might re-use these.
Cheers,
Ben.
prev parent reply other threads:[~2016-11-25 8:23 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-23 11:09 [PATCH v5 1/7] powerpc/mm: update ptep_set_access_flag to not do full mm tlb flush Aneesh Kumar K.V
2016-11-23 11:09 ` [PATCH v5 2/7] powerpc/mm: Rename hugetlb-radix.h to hugetlb.h Aneesh Kumar K.V
2016-11-23 11:09 ` [PATCH v5 3/7] powerpc/mm/hugetlb: Handle hugepage size supported by hash config Aneesh Kumar K.V
2016-11-23 14:08 ` Balbir Singh
2016-11-23 14:30 ` Aneesh Kumar K.V
2016-11-23 11:10 ` [PATCH v5 4/7] powerpc/mm/hugetlb: Make copy of huge_ptep_get_and_clear to different platform headers Aneesh Kumar K.V
2016-11-23 11:10 ` [PATCH v5 5/7] powerpc/mm/hugetlb: Switch hugetlb update to use huge_pte_update Aneesh Kumar K.V
2016-11-23 11:10 ` [PATCH v5 6/7] powerpc/mm: update pte_update to not do full mm tlb flush Aneesh Kumar K.V
2016-11-23 11:10 ` [PATCH v5 7/7] powerpc/mm: Batch tlb flush when invalidating pte entries Aneesh Kumar K.V
2016-11-23 11:23 ` [PATCH v5 1/7] powerpc/mm: update ptep_set_access_flag to not do full mm tlb flush Balbir Singh
2016-11-23 11:53 ` Aneesh Kumar K.V
2016-11-23 14:05 ` Balbir Singh
2016-11-23 14:36 ` Aneesh Kumar K.V
2016-11-23 15:21 ` Balbir Singh
2016-11-25 2:48 ` Paul Mackerras
2016-11-25 4:19 ` Aneesh Kumar K.V
2016-11-25 7:05 ` Aneesh Kumar K.V
2016-11-25 8:22 ` Benjamin Herrenschmidt [this message]
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