leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

powerpc: Decode the pte-lp-encoding bits correctly.

Browse Source 
We look at both the segment base page size and actual page size and store
the pte-lp-encodings in an array per base page size.

We also update all relevant functions to take actual page size argument
so that we can use the correct PTE LP encoding in HPTE. This should also
get the basic Multiple Page Size per Segment (MPSS) support. This is needed
to enable THP on ppc64.

[Fixed PR KVM build --BenH]

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Aneesh Kumar K.V
2013-04-28 09:37:35 +00:00
committed by Benjamin Herrenschmidt
parent 74f227b228
commit b1022fbd29
10 changed files with 235 additions and 119 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
arch/powerpc/kvm/book3s_hv.c
View File

@@ -1515,7 +1515,13 @@ static void kvmppc_add_seg_page_size(struct kvm_ppc_one_seg_page_size **sps,
(*sps)->page_shift = def->shift;
(*sps)->slb_enc = def->sllp;
(*sps)->enc[0].page_shift = def->shift;
(*sps)->enc[0].pte_enc = def->penc;
/*
* Only return base page encoding. We don't want to return
* all the supporting pte_enc, because our H_ENTER doesn't
* support MPSS yet. Once they do, we can start passing all
* support pte_enc here
*/
(*sps)->enc[0].pte_enc = def->penc[linux_psize];
(*sps)++;
}