From: Haren Myneni <haren@linux.ibm.com> To: linuxppc-dev@lists.ozlabs.org, linux-crypto@vger.kernel.org, mpe@ellerman.id.au, herbert@gondor.apana.org.au, npiggin@gmail.com Cc: hbabu@us.ibm.com, haren@us.ibm.com Subject: [PATCH v5 09/17] powerpc/vas: Define QoS credit flag to allocate window Date: Sun, 13 Jun 2021 04:00:24 -0700 [thread overview] Message-ID: <64c8e95b25f58c5e05c98765dab2bc8eb9b1483d.camel@linux.ibm.com> (raw) In-Reply-To: <ed7a09822cf3a2e463f942e5a37309a2365c9d79.camel@linux.ibm.com> PowerVM introduces two different type of credits: Default and Quality of service (QoS). The total number of default credits available on each LPAR depends on CPU resources configured. But these credits can be shared or over-committed across LPARs in shared mode which can result in paste command failure (RMA_busy). To avoid NX HW contention, the hypervisor ntroduces QoS credit type which makes sure guaranteed access to NX esources. The system admins can assign QoS credits or each LPAR via HMC. Default credit type is used to allocate a VAS window by default as on PowerVM implementation. But the process can pass VAS_TX_WIN_FLAG_QOS_CREDIT flag with VAS_TX_WIN_OPEN ioctl to open QoS type window. Signed-off-by: Haren Myneni <haren@linux.ibm.com> --- arch/powerpc/include/uapi/asm/vas-api.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/include/uapi/asm/vas-api.h b/arch/powerpc/include/uapi/asm/vas-api.h index ebd4b2424785..7c81301ecdba 100644 --- a/arch/powerpc/include/uapi/asm/vas-api.h +++ b/arch/powerpc/include/uapi/asm/vas-api.h @@ -13,11 +13,15 @@ #define VAS_MAGIC 'v' #define VAS_TX_WIN_OPEN _IOW(VAS_MAGIC, 0x20, struct vas_tx_win_open_attr) +/* Flags to VAS TX open window ioctl */ +/* To allocate a window with QoS credit, otherwise use default credit */ +#define VAS_TX_WIN_FLAG_QOS_CREDIT 0x0000000000000001 + struct vas_tx_win_open_attr { __u32 version; __s16 vas_id; /* specific instance of vas or -1 for default */ __u16 reserved1; - __u64 flags; /* Future use */ + __u64 flags; __u64 reserved2[6]; }; -- 2.18.2
WARNING: multiple messages have this Message-ID (diff)
From: Haren Myneni <haren@linux.ibm.com> To: linuxppc-dev@lists.ozlabs.org, linux-crypto@vger.kernel.org, mpe@ellerman.id.au, herbert@gondor.apana.org.au, npiggin@gmail.com Subject: [PATCH v5 09/17] powerpc/vas: Define QoS credit flag to allocate window Date: Sun, 13 Jun 2021 04:00:24 -0700 [thread overview] Message-ID: <64c8e95b25f58c5e05c98765dab2bc8eb9b1483d.camel@linux.ibm.com> (raw) In-Reply-To: <ed7a09822cf3a2e463f942e5a37309a2365c9d79.camel@linux.ibm.com> PowerVM introduces two different type of credits: Default and Quality of service (QoS). The total number of default credits available on each LPAR depends on CPU resources configured. But these credits can be shared or over-committed across LPARs in shared mode which can result in paste command failure (RMA_busy). To avoid NX HW contention, the hypervisor ntroduces QoS credit type which makes sure guaranteed access to NX esources. The system admins can assign QoS credits or each LPAR via HMC. Default credit type is used to allocate a VAS window by default as on PowerVM implementation. But the process can pass VAS_TX_WIN_FLAG_QOS_CREDIT flag with VAS_TX_WIN_OPEN ioctl to open QoS type window. Signed-off-by: Haren Myneni <haren@linux.ibm.com> --- arch/powerpc/include/uapi/asm/vas-api.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/include/uapi/asm/vas-api.h b/arch/powerpc/include/uapi/asm/vas-api.h index ebd4b2424785..7c81301ecdba 100644 --- a/arch/powerpc/include/uapi/asm/vas-api.h +++ b/arch/powerpc/include/uapi/asm/vas-api.h @@ -13,11 +13,15 @@ #define VAS_MAGIC 'v' #define VAS_TX_WIN_OPEN _IOW(VAS_MAGIC, 0x20, struct vas_tx_win_open_attr) +/* Flags to VAS TX open window ioctl */ +/* To allocate a window with QoS credit, otherwise use default credit */ +#define VAS_TX_WIN_FLAG_QOS_CREDIT 0x0000000000000001 + struct vas_tx_win_open_attr { __u32 version; __s16 vas_id; /* specific instance of vas or -1 for default */ __u16 reserved1; - __u64 flags; /* Future use */ + __u64 flags; __u64 reserved2[6]; }; -- 2.18.2
next prev parent reply other threads:[~2021-06-13 11:00 UTC|newest] Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-06-13 10:53 [PATCH v5 00/17] Enable VAS and NX-GZIP support on PowerVM Haren Myneni 2021-06-13 10:53 ` Haren Myneni 2021-06-13 10:54 ` [PATCH v5 01/17] powerpc/powernv/vas: Release reference to tgid during window close Haren Myneni 2021-06-13 10:54 ` Haren Myneni 2021-06-14 2:11 ` Nicholas Piggin 2021-06-14 2:11 ` Nicholas Piggin 2021-06-13 10:55 ` [PATCH v5 02/17] powerpc/vas: Move VAS API to book3s common platform Haren Myneni 2021-06-13 10:55 ` Haren Myneni 2021-06-14 2:10 ` Nicholas Piggin 2021-06-14 2:10 ` Nicholas Piggin 2021-06-13 10:56 ` [PATCH v5 03/17] powerpc/powernv/vas: Rename register/unregister functions Haren Myneni 2021-06-13 10:56 ` Haren Myneni 2021-06-13 10:57 ` [PATCH v5 04/17] powerpc/vas: Add platform specific user window operations Haren Myneni 2021-06-13 10:57 ` Haren Myneni 2021-06-14 2:24 ` Nicholas Piggin 2021-06-14 2:24 ` Nicholas Piggin 2021-06-15 6:37 ` Haren Myneni 2021-06-15 6:37 ` Haren Myneni 2021-06-16 9:11 ` Nicholas Piggin 2021-06-16 9:11 ` Nicholas Piggin 2021-06-13 10:57 ` [PATCH v5 05/17] powerpc/vas: Create take/drop pid and mm reference functions Haren Myneni 2021-06-13 10:57 ` Haren Myneni 2021-06-14 2:26 ` Nicholas Piggin 2021-06-14 2:26 ` Nicholas Piggin 2021-06-13 10:58 ` [PATCH v5 06/17] powerpc/vas: Move update_csb/dump_crb to common book3s platform Haren Myneni 2021-06-13 10:58 ` Haren Myneni 2021-06-14 3:34 ` Nicholas Piggin 2021-06-14 3:34 ` Nicholas Piggin 2021-06-13 10:58 ` [PATCH v5 07/17] powerpc/vas: Define and use common vas_window struct Haren Myneni 2021-06-13 10:58 ` Haren Myneni 2021-06-14 2:28 ` Nicholas Piggin 2021-06-14 2:28 ` Nicholas Piggin 2021-06-13 10:59 ` [PATCH v5 08/17] powerpc/pseries/vas: Define VAS/NXGZIP hcalls and structs Haren Myneni 2021-06-13 10:59 ` Haren Myneni 2021-06-14 2:32 ` Nicholas Piggin 2021-06-14 2:32 ` Nicholas Piggin 2021-06-13 11:00 ` Haren Myneni [this message] 2021-06-13 11:00 ` [PATCH v5 09/17] powerpc/vas: Define QoS credit flag to allocate window Haren Myneni 2021-06-14 2:32 ` Nicholas Piggin 2021-06-14 2:32 ` Nicholas Piggin 2021-06-13 11:00 ` [PATCH v5 10/17] powerpc/pseries/vas: Add hcall wrappers for VAS handling Haren Myneni 2021-06-13 11:00 ` Haren Myneni 2021-06-13 11:01 ` [PATCH v5 11/17] powerpc/pseries/vas: Implement getting capabilities from hypervisor Haren Myneni 2021-06-13 11:01 ` Haren Myneni 2021-06-14 2:35 ` Nicholas Piggin 2021-06-14 2:35 ` Nicholas Piggin 2021-06-13 11:02 ` [PATCH v5 12/17] powerpc/pseries/vas: Integrate API with open/close windows Haren Myneni 2021-06-13 11:02 ` Haren Myneni 2021-06-14 2:55 ` Nicholas Piggin 2021-06-14 2:55 ` Nicholas Piggin 2021-06-15 6:51 ` Haren Myneni 2021-06-15 6:51 ` Haren Myneni 2021-06-15 7:26 ` Haren Myneni 2021-06-15 7:26 ` Haren Myneni 2021-06-16 9:38 ` Nicholas Piggin 2021-06-16 9:38 ` Nicholas Piggin 2021-06-13 11:02 ` [PATCH v5 13/17] powerpc/pseries/vas: Setup IRQ and fault handling Haren Myneni 2021-06-13 11:02 ` Haren Myneni 2021-06-14 3:07 ` Nicholas Piggin 2021-06-14 3:07 ` Nicholas Piggin 2021-06-15 9:01 ` Haren Myneni 2021-06-15 9:01 ` Haren Myneni 2021-06-16 9:40 ` Nicholas Piggin 2021-06-16 9:40 ` Nicholas Piggin 2021-06-13 11:03 ` [PATCH v5 14/17] crypto/nx: Rename nx-842-pseries file name to nx-common-pseries Haren Myneni 2021-06-13 11:03 ` Haren Myneni 2021-06-14 3:07 ` Nicholas Piggin 2021-06-14 3:07 ` Nicholas Piggin 2021-06-13 11:04 ` [PATCH v5 15/17] crypto/nx: Register and unregister VAS interface on PowerVM Haren Myneni 2021-06-13 11:04 ` Haren Myneni 2021-06-14 3:35 ` Nicholas Piggin 2021-06-14 3:35 ` Nicholas Piggin 2021-06-13 11:04 ` [PATCH v5 16/17] crypto/nx: Get NX capabilities for GZIP coprocessor type Haren Myneni 2021-06-13 11:04 ` Haren Myneni 2021-06-14 3:39 ` Nicholas Piggin 2021-06-14 3:39 ` Nicholas Piggin 2021-06-15 0:01 ` Haren Myneni 2021-06-15 0:01 ` Haren Myneni 2021-06-13 11:05 ` [PATCH v5 17/17] crypto/nx: Add sysfs interface to export NX capabilities Haren Myneni 2021-06-13 11:05 ` Haren Myneni 2021-06-14 3:46 ` Nicholas Piggin 2021-06-14 3:46 ` Nicholas Piggin
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=64c8e95b25f58c5e05c98765dab2bc8eb9b1483d.camel@linux.ibm.com \ --to=haren@linux.ibm.com \ --cc=haren@us.ibm.com \ --cc=hbabu@us.ibm.com \ --cc=herbert@gondor.apana.org.au \ --cc=linux-crypto@vger.kernel.org \ --cc=linuxppc-dev@lists.ozlabs.org \ --cc=mpe@ellerman.id.au \ --cc=npiggin@gmail.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: linkBe 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.