On 05/06/22 at 07:44pm, Zhen Lei wrote: > Now arm64 has added support for "crashkernel=X,high" and > "crashkernel=Y,low". Unlike x86, crash low memory is not allocated if > "crashkernel=Y,low" is not specified. > > Signed-off-by: Zhen Lei <[email protected]> > --- > Documentation/admin-guide/kernel-parameters.txt | 9 +++++++-- > 1 file changed, 7 insertions(+), 2 deletions(-) > > diff --git a/Documentation/admin-guide/kernel-parameters.txt > b/Documentation/admin-guide/kernel-parameters.txt > index 3f1cc5e317ed4a5..aa44c61114aa4b8 100644 > --- a/Documentation/admin-guide/kernel-parameters.txt > +++ b/Documentation/admin-guide/kernel-parameters.txt > @@ -808,7 +808,7 @@ > Documentation/admin-guide/kdump/kdump.rst for an > example. > > crashkernel=size[KMG],high > - [KNL, X86-64] range could be above 4G. Allow kernel > + [KNL, X86-64, ARM64] range could be above 4G. Allow > kernel > to allocate physical memory region from top, so could > be above 4G if system have more than 4G ram installed. > Otherwise memory region will be allocated below 4G, if > @@ -821,7 +821,7 @@ > that require some amount of low memory, e.g. swiotlb > requires at least 64M+32K low memory, also enough extra > low memory is needed to make sure DMA buffers for 32-bit > - devices won't run out. Kernel would try to allocate at > + devices won't run out. Kernel would try to allocate > at least 256M below 4G automatically. > This one let user to specify own low range under 4G > for second kernel instead. > @@ -829,6 +829,11 @@ > It will be ignored when crashkernel=X,high is not used > or memory reserved is below 4G. > > + [KNL, ARM64] range in low memory. > + This one let user to specify a low range in DMA zone for ^ not needed, Maybe Catalin can fix it when merging.
Other than this, LGTM, Acked-by: Baoquan He <[email protected]> > + crash dump kernel. > + It will be ignored when crashkernel=X,high is not used. > + > cryptomgr.notests > [KNL] Disable crypto self-tests > > -- > 2.25.1 > _______________________________________________ kexec mailing list [email protected] http://lists.infradead.org/mailman/listinfo/kexec
