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authorSatheesh Rajendran <sathnaga@linux.vnet.ibm.com>2020-09-21 14:32:20 +0530
committerJonathan Corbet <corbet@lwn.net>2020-09-24 10:36:49 -0600
commitaed26eebf5808168bf6e78231db51df86d94461f (patch)
tree701f3620f2f6a4fa63105b884f55082fe3cf6f0c /Documentation/admin-guide/kernel-parameters.txt
parent73589a78b86db76002b0d9bc78e3f27e9ce4e593 (diff)
Doc: admin-guide: Add entry for kvm_cma_resv_ratio kernel param
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: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com> Link: https://lore.kernel.org/r/20200921090220.14981-1-sathnaga@linux.vnet.ibm.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation/admin-guide/kernel-parameters.txt')
-rw-r--r--Documentation/admin-guide/kernel-parameters.txt8
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index d81d1d8414fb..b1e3d63cdc15 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -2261,6 +2261,14 @@
[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)