From: David Gibson <david@gibson.dropbear.id.au>
To: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Cc: paulus@samba.org, mpe@ellerman.id.au, benh@kernel.crashing.org,
aik@ozlabs.ru, lvivier@redhat.com, thuth@redhat.com,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [RFCv2 6/9] pseries: Add hypercall wrappers for hash page table resizing
Date: Tue, 2 Feb 2016 11:58:20 +1100 [thread overview]
Message-ID: <20160202005820.GB15080@voom.fritz.box> (raw)
In-Reply-To: <56AF0523.60902@linux.vnet.ibm.com>
[-- Attachment #1: Type: text/plain, Size: 2911 bytes --]
On Mon, Feb 01, 2016 at 12:41:31PM +0530, Anshuman Khandual wrote:
> On 01/29/2016 10:54 AM, David Gibson wrote:
> > This adds the hypercall numbers and wrapper functions for the hash page
> > table resizing hypercalls.
> >
> > These are experimental "platform specific" values for now, until we have a
> > formal PAPR update.
> >
> > It also adds a new firmware feature flat to track the presence of the
> > HPT resizing calls.
>
> Its a flag ....................... ^^^^^^^ here.
Oops, thanks.
>
> >
> > Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
> > ---
> > arch/powerpc/include/asm/firmware.h | 5 +++--
> > arch/powerpc/include/asm/hvcall.h | 2 ++
> > arch/powerpc/include/asm/plpar_wrappers.h | 12 ++++++++++++
> > arch/powerpc/platforms/pseries/firmware.c | 1 +
> > 4 files changed, 18 insertions(+), 2 deletions(-)
> >
> > diff --git a/arch/powerpc/include/asm/firmware.h b/arch/powerpc/include/asm/firmware.h
> > index b062924..32435d2 100644
> > --- a/arch/powerpc/include/asm/firmware.h
> > +++ b/arch/powerpc/include/asm/firmware.h
> > @@ -42,7 +42,7 @@
> > #define FW_FEATURE_SPLPAR ASM_CONST(0x0000000000100000)
> > #define FW_FEATURE_LPAR ASM_CONST(0x0000000000400000)
> > #define FW_FEATURE_PS3_LV1 ASM_CONST(0x0000000000800000)
> > -/* Free ASM_CONST(0x0000000001000000) */
> > +#define FW_FEATURE_HPT_RESIZE ASM_CONST(0x0000000001000000)
> > #define FW_FEATURE_CMO ASM_CONST(0x0000000002000000)
> > #define FW_FEATURE_VPHN ASM_CONST(0x0000000004000000)
> > #define FW_FEATURE_XCMO ASM_CONST(0x0000000008000000)
> > @@ -66,7 +66,8 @@ enum {
> > FW_FEATURE_MULTITCE | FW_FEATURE_SPLPAR | FW_FEATURE_LPAR |
> > FW_FEATURE_CMO | FW_FEATURE_VPHN | FW_FEATURE_XCMO |
> > FW_FEATURE_SET_MODE | FW_FEATURE_BEST_ENERGY |
> > - FW_FEATURE_TYPE1_AFFINITY | FW_FEATURE_PRRN,
> > + FW_FEATURE_TYPE1_AFFINITY | FW_FEATURE_PRRN |
> > + FW_FEATURE_HPT_RESIZE,
> > FW_FEATURE_PSERIES_ALWAYS = 0,
> > FW_FEATURE_POWERNV_POSSIBLE = FW_FEATURE_OPAL,
> > FW_FEATURE_POWERNV_ALWAYS = 0,
> > diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h
> > index e3b54dd..195e080 100644
> > --- a/arch/powerpc/include/asm/hvcall.h
> > +++ b/arch/powerpc/include/asm/hvcall.h
> > @@ -293,6 +293,8 @@
> >
> > /* Platform specific hcalls, used by KVM */
> > #define H_RTAS 0xf000
> > +#define H_RESIZE_HPT_PREPARE 0xf003
> > +#define H_RESIZE_HPT_COMMIT 0xf004
>
> This sound better and matches FW_FEATURE_HPT_RESIZE ?
I'm not quite sure what you're suggesting here.
> #define H_HPT_RESIZE_PREPARE 0xf003
> #define H_HPT_RESIZE_COMMIT 0xf004
>
>
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 819 bytes --]
next prev parent reply other threads:[~2016-02-02 1:08 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-29 5:23 [RFCv2 0/9] PAPR hash page table resizing (guest side) David Gibson
2016-01-29 5:23 ` [RFCv2 1/9] memblock: Don't mark memblock_phys_mem_size() as __init David Gibson
2016-02-01 5:50 ` Anshuman Khandual
2016-02-08 2:46 ` Paul Mackerras
2016-01-29 5:23 ` [RFCv2 2/9] arch/powerpc: Clean up error handling for htab_remove_mapping David Gibson
2016-02-01 5:54 ` Anshuman Khandual
2016-02-08 2:48 ` Paul Mackerras
2016-01-29 5:23 ` [RFCv2 3/9] arch/powerpc: Handle removing maybe-present bolted HPTEs David Gibson
2016-02-01 5:58 ` Anshuman Khandual
2016-02-02 1:08 ` David Gibson
2016-02-02 13:49 ` Denis Kirjanov
2016-02-08 2:54 ` Paul Mackerras
2016-02-09 0:43 ` David Gibson
2016-01-29 5:23 ` [RFCv2 4/9] arch/powerpc: Clean up memory hotplug failure paths David Gibson
2016-02-01 6:29 ` Anshuman Khandual
2016-02-02 15:04 ` Nathan Fontenot
2016-02-03 4:31 ` David Gibson
2016-02-08 5:47 ` Paul Mackerras
2016-01-29 5:23 ` [RFCv2 5/9] arch/powerpc: Split hash page table sizing heuristic into a helper David Gibson
2016-02-01 7:04 ` Anshuman Khandual
2016-02-02 1:04 ` David Gibson
2016-02-04 10:56 ` Anshuman Khandual
2016-02-08 5:57 ` Paul Mackerras
2016-01-29 5:24 ` [RFCv2 6/9] pseries: Add hypercall wrappers for hash page table resizing David Gibson
2016-02-01 7:11 ` Anshuman Khandual
2016-02-02 0:58 ` David Gibson [this message]
2016-02-04 11:11 ` Anshuman Khandual
2016-02-07 22:33 ` David Gibson
2016-02-08 5:58 ` Paul Mackerras
2016-01-29 5:24 ` [RFCv2 7/9] pseries: Add support for hash " David Gibson
2016-02-01 8:31 ` Anshuman Khandual
2016-02-01 11:04 ` David Gibson
2016-02-08 5:59 ` Paul Mackerras
2016-01-29 5:24 ` [RFCv2 8/9] pseries: Advertise HPT resizing support via CAS David Gibson
2016-02-01 8:36 ` Anshuman Khandual
2016-02-08 6:00 ` Paul Mackerras
2016-01-29 5:24 ` [RFCv2 9/9] pseries: Automatically resize HPT for memory hot add/remove David Gibson
2016-02-01 8:51 ` Anshuman Khandual
2016-02-01 10:55 ` David Gibson
2016-02-08 6:01 ` Paul Mackerras
2016-02-01 5:50 ` [RFCv2 0/9] PAPR hash page table resizing (guest side) Anshuman Khandual
2016-02-02 0:57 ` David Gibson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20160202005820.GB15080@voom.fritz.box \
--to=david@gibson.dropbear.id.au \
--cc=aik@ozlabs.ru \
--cc=benh@kernel.crashing.org \
--cc=khandual@linux.vnet.ibm.com \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=lvivier@redhat.com \
--cc=mpe@ellerman.id.au \
--cc=paulus@samba.org \
--cc=thuth@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.