From: Satheesh Rajendran <sathn...@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-ker...@vger.kernel.org
Cc: kvm-...@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Paul Mackerras <pau...@samba.org>
Cc: Michael Ellerman <m...@ellerman.id.au>
Cc: Jonathan Corbet <cor...@lwn.net>
Signed-off-by: Satheesh Rajendran <sathn...@linux.vnet.ibm.com>
---
Documentation/admin-guide/kernel-parameters.txt | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/Documentation/admin-guide/kernel-parameters.txt
b/Documentation/admin-guide/kernel-parameters.txt
index a1068742a6df..9cb126573c71 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -599,6 +599,15 @@
altogether. For more information, see
include/linux/dma-contiguous.h
+ kvm_cma_resv_ratio=n
+ [PPC]
+ Reserves given percentage from system memory area for
+ contiguous memory allocation for KVM hash pagetable
+ allocation.
+ Bydefault it reserves 5% of total system memory.
+ Format: <integer>
+ Default: 5
+
cmo_free_hint= [PPC] Format: { yes | no }
Specify whether pages are marked as being inactive
when they are freed. This is used in CMO environments
--
2.26.2
