From: sathnaga@linux.vnet.ibm.com
To: linux-doc@vger.kernel.org
Cc: Jonathan Corbet <corbet@lwn.net>,
Randy Dunlap <rdunlap@infradead.org>,
linux-kernel@vger.kernel.org, kvm-ppc@vger.kernel.org,
Paul Mackerras <paulus@samba.org>,
Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH V2] Doc: admin-guide: Add entry for kvm_cma_resv_ratio kernel param
Date: Mon, 21 Sep 2020 14:32:20 +0530 [thread overview]
Message-ID: <20200921090220.14981-1-sathnaga@linux.vnet.ibm.com> (raw)
From: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Add document entry for kvm_cma_resv_ratio kernel param which
is used to alter the KVM contiguous memory allocation percentage
for hash pagetable allocation used by hash mode PowerPC KVM guests.
Cc: linux-kernel@vger.kernel.org
Cc: kvm-ppc@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Jonathan Corbet <corbet@lwn.net>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
---
V2:
Addressed review comments from Randy.
V1: https://lkml.org/lkml/2020/9/16/72
---
Documentation/admin-guide/kernel-parameters.txt | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index a1068742a6df..932ed45740c9 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -2258,6 +2258,14 @@
[KVM,ARM] Allow use of GICv4 for direct injection of
LPIs.
+ kvm_cma_resv_ratio=n [PPC]
+ Reserves given percentage from system memory area for
+ contiguous memory allocation for KVM hash pagetable
+ allocation.
+ By default it reserves 5% of total system memory.
+ Format: <integer>
+ Default: 5
+
kvm-intel.ept= [KVM,Intel] Disable extended page tables
(virtualized MMU) support on capable Intel chips.
Default is 1 (enabled)
--
2.26.2
next reply other threads:[~2020-09-21 9:05 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-21 9:02 sathnaga [this message]
2020-09-21 15:58 ` [PATCH V2] Doc: admin-guide: Add entry for kvm_cma_resv_ratio kernel param Randy Dunlap
2020-09-21 23:19 ` Paul Mackerras
2020-09-24 16:37 ` Jonathan Corbet
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