| Message ID | 20200916061130.723411-1-sathnaga@linux.vnet.ibm.com |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | Doc: admin-guide: Add entry for kvm_cma_resv_ratio kernel param | expand |
On 9/15/20 11:11 PM, sathnaga@linux.vnet.ibm.com wrote: > 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> > Signed-off-by: Satheesh Rajendran <sathnaga@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] You can put [PPC] on the line above. > + Reserves given percentage from system memory area for > + contiguous memory allocation for KVM hash pagetable > + allocation. > + Bydefault it reserves 5% of total system memory. By default > + Format: <integer> > + Default: 5 > + and please use tabs for indentation, not all spaces. > 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 > Entries in kernel-parameters.txt should be sorted into dictionary order, so please put that with the other kvm parameters. thanks.
Hi Randy, Thanks for the comments, will send a V2 fixing them. On Tue, Sep 15, 2020 at 11:18:52PM -0700, Randy Dunlap wrote: > On 9/15/20 11:11 PM, sathnaga@linux.vnet.ibm.com wrote: > > 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> > > Signed-off-by: Satheesh Rajendran <sathnaga@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] > > You can put [PPC] on the line above. > sure > > + Reserves given percentage from system memory area for > > + contiguous memory allocation for KVM hash pagetable > > + allocation. > > + Bydefault it reserves 5% of total system memory. > > By default > > > + Format: <integer> > > + Default: 5 > > + > > and please use tabs for indentation, not all spaces. > sure > > 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 > > > > Entries in kernel-parameters.txt should be sorted into dictionary order, > so please put that with the other kvm parameters. > sure. > thanks. > -- > ~Randy > Thanks! -Satheesh.
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