From: David Gibson <david@gibson.dropbear.id.au>
To: paulus@samba.org, aik@ozlabs.ru, benh@kernel.crashing.org
Cc: bharata@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org,
David Gibson <david@gibson.dropbear.id.au>
Subject: [RFCv2 05/25] pseries: Add hypercall wrappers for hash page table resizing
Date: Tue, 8 Mar 2016 14:08:42 +1100 [thread overview]
Message-ID: <1457406542-6210-6-git-send-email-david@gibson.dropbear.id.au> (raw)
In-Reply-To: <1457406542-6210-1-git-send-email-david@gibson.dropbear.id.au>
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 flag to track the presence of the
HPT resizing calls.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Paul Mackerras <paulus@samba.org>
---
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
/* "Platform specific hcalls", provided by PHYP */
#define H_GET_24X7_CATALOG_PAGE 0xF078
diff --git a/arch/powerpc/include/asm/plpar_wrappers.h b/arch/powerpc/include/asm/plpar_wrappers.h
index 1b39424..b7ee6d9 100644
--- a/arch/powerpc/include/asm/plpar_wrappers.h
+++ b/arch/powerpc/include/asm/plpar_wrappers.h
@@ -242,6 +242,18 @@ static inline long plpar_pte_protect(unsigned long flags, unsigned long ptex,
return plpar_hcall_norets(H_PROTECT, flags, ptex, avpn);
}
+static inline long plpar_resize_hpt_prepare(unsigned long flags,
+ unsigned long shift)
+{
+ return plpar_hcall_norets(H_RESIZE_HPT_PREPARE, flags, shift);
+}
+
+static inline long plpar_resize_hpt_commit(unsigned long flags,
+ unsigned long shift)
+{
+ return plpar_hcall_norets(H_RESIZE_HPT_COMMIT, flags, shift);
+}
+
static inline long plpar_tce_get(unsigned long liobn, unsigned long ioba,
unsigned long *tce_ret)
{
diff --git a/arch/powerpc/platforms/pseries/firmware.c b/arch/powerpc/platforms/pseries/firmware.c
index 8c80588..7b287be 100644
--- a/arch/powerpc/platforms/pseries/firmware.c
+++ b/arch/powerpc/platforms/pseries/firmware.c
@@ -63,6 +63,7 @@ hypertas_fw_features_table[] = {
{FW_FEATURE_VPHN, "hcall-vphn"},
{FW_FEATURE_SET_MODE, "hcall-set-mode"},
{FW_FEATURE_BEST_ENERGY, "hcall-best-energy-1*"},
+ {FW_FEATURE_HPT_RESIZE, "hcall-hpt-resize"},
};
/* Build up the firmware features bitmask using the contents of
--
2.5.0
next prev parent reply other threads:[~2016-03-08 3:09 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-08 3:08 [RFCv2 00/25] PAPR HPT resizing, guest side & host side preliminaries David Gibson
2016-03-08 3:08 ` [RFCv2 01/25] powerpc/mm: Clean up error handling for htab_remove_mapping David Gibson
2016-03-08 3:08 ` [RFCv2 02/25] powerpc/mm: Handle removing maybe-present bolted HPTEs David Gibson
2016-03-08 3:08 ` [RFCv2 03/25] powerpc/mm: Clean up memory hotplug failure paths David Gibson
2016-03-08 3:08 ` [RFCv2 04/25] powerpc/mm: Split hash page table sizing heuristic into a helper David Gibson
2016-03-08 3:08 ` David Gibson [this message]
2016-03-08 3:08 ` [RFCv2 06/25] pseries: Add support for hash table resizing David Gibson
2016-03-08 3:08 ` [RFCv2 07/25] pseries: Advertise HPT resizing support via CAS David Gibson
2016-03-08 3:08 ` [RFCv2 08/25] pseries: Automatically resize HPT for memory hot add/remove David Gibson
2016-03-08 3:08 ` [RFCv2 09/25] powerpc/kvm: Corectly report KVM_CAP_PPC_ALLOC_HTAB David Gibson
2016-03-08 3:08 ` [RFCv2 10/25] powerpc/kvm: Add capability flag for hashed page table resizing David Gibson
2016-03-08 3:08 ` [RFCv2 11/25] powerpc/kvm: Rename kvm_alloc_hpt() for clarity David Gibson
2016-03-08 3:08 ` [RFCv2 12/25] powerpc/kvm: Gather HPT related variables into sub-structure David Gibson
2016-03-08 3:08 ` [RFCv2 13/25] powerpc/kvm: Don't store values derivable from HPT order David Gibson
2016-03-08 3:08 ` [RFCv2 14/25] powerpc/kvm: Split HPT allocation from activation David Gibson
2016-03-08 3:08 ` [RFCv2 15/25] powerpc/kvm: Allow KVM_PPC_ALLOCATE_HTAB ioctl() to change HPT size David Gibson
2016-03-08 3:08 ` [RFCv2 16/25] powerpc/kvm: HPT resizing stub implementation David Gibson
2016-03-08 3:08 ` [RFCv2 17/25] powerpc/kvm: Advertise availablity of HPT resizing on KVM HV David Gibson
2016-03-08 3:08 ` [RFCv2 18/25] powerpc/kvm: Outline of HPT resizing implementation David Gibson
2016-03-08 3:08 ` [RFCv2 19/25] powerpc/kbm: Allocations for HPT resizing David Gibson
2016-03-08 3:08 ` [RFCv2 20/25] powerpc/kvm: Make MMU notifier handlers more flexible David Gibson
2016-03-08 3:08 ` [RFCv2 21/25] powerpc/kvm: Make MMU notifiers HPT resize aware David Gibson
2016-03-08 3:08 ` [RFCv2 22/25] powerpc/kvm: Exclude HPT resizes when collecting the dirty log David Gibson
2016-03-08 3:09 ` [RFCv2 23/25] powerpc/kvm: Rehashing for HPT resizing David Gibson
2016-03-08 3:09 ` [RFCv2 24/25] powerpc/kvm: HPT resize pivot David Gibson
2016-03-08 3:09 ` [RFCv2 25/25] powerpc/kvm: Harvest RC bits from old HPT after HPT resize 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=1457406542-6210-6-git-send-email-david@gibson.dropbear.id.au \
--to=david@gibson.dropbear.id.au \
--cc=aik@ozlabs.ru \
--cc=benh@kernel.crashing.org \
--cc=bharata@linux.vnet.ibm.com \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=paulus@samba.org \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).