From: Anshuman Khandual <khandual@linux.vnet.ibm.com>
To: David Gibson <david@gibson.dropbear.id.au>,
paulus@samba.org, mpe@ellerman.id.au, benh@kernel.crashing.org
Cc: 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: Mon, 01 Feb 2016 12:41:31 +0530 [thread overview]
Message-ID: <56AF0523.60902@linux.vnet.ibm.com> (raw)
In-Reply-To: <1454045043-25545-7-git-send-email-david@gibson.dropbear.id.au>
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.
>
> 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 ?
#define H_HPT_RESIZE_PREPARE 0xf003
#define H_HPT_RESIZE_COMMIT 0xf004
next prev parent reply other threads:[~2016-02-01 7:12 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 [this message]
2016-02-02 0:58 ` David Gibson
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
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