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> Reviewed-by: Randy Dunlap <rdun...@infradead.org> Signed-off-by: Satheesh Rajendran <sathn...@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
