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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>
This commit is contained in:
Satheesh Rajendran 2020-09-21 14:32:20 +05:30 committed by Jonathan Corbet
parent 73589a78b8
commit aed26eebf5
1 changed files with 8 additions and 0 deletions
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8
Documentation/admin-guide/kernel-parameters.txt
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@ -2261,6 +2261,14 @@
[KVM,ARM] Allow use of GICv4 for direct injection of [KVM,ARM] Allow use of GICv4 for direct injection of
LPIs. 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 kvm-intel.ept= [KVM,Intel] Disable extended page tables
(virtualized MMU) support on capable Intel chips. (virtualized MMU) support on capable Intel chips.
Default is 1 (enabled) Default is 1 (enabled)