Messages in this thread | | | Date | Fri, 12 Apr 2013 16:07:27 -0400 | From | Vivek Goyal <> | Subject | Re: [PATCH -v5 0/4] x86, kdump: Fix crashkernel high with old kexec-tools |
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Hi hpa,
Can you please consider including these patches for 3.9. Today, another kdump user ran into issues when he tried to use latest kernel (3.9-rcx) with existing kexec-tools. Obiviously kernel loading failed due to crashkernel memory being reserved too high.
Thanks Vivek
On Thu, Apr 11, 2013 at 11:54:47PM -0700, Yinghai Lu wrote: > Vivek found some problems with old kexec-tools. > > We keep the old crashkernel=X to old behavoir, so it will not break > old kexec-tools. > Add crashkernel=X,high to support new kexec-tools that supports loading high. > when high is used, memblock will search from top to low. > if the allocated one is above 4G, kernel will try to auto allocate > 72M under 4G for swiotlb. > user could crashkernel=Y,low to change 72M to other value. > > -v2: reorder the patch sequences > crashkernel=X,high, crashkernel=Y,low only handle simple form. > crashkernel=X will override crashkernel=X;high crashkernel=Y;low > -v3: update description in kernel-parameters.txt > update get_last_crashkernel and _simple checking about suffix. > -v4: update to use ,high again, and also not abuse parse_crashkernel_simple > -v5: tight checking about crashkernel=X,highextra,high > > Thanks > > Yinghai
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