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| author | Scott Wood <scottwood@freescale.com> | 2015-10-06 22:48:08 -0500 |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2015-10-17 00:36:37 -0500 |
| commit | 1930bb5ccf77da3bf1483e2cd85a12ec9c0ed0f6 (patch) | |
| tree | 478a9ac249f4406466fd20a84ad5de4f4c6f0026 /arch/powerpc/kernel/setup_64.c | |
| parent | 1112450a18dfcc26dd18000e20bf06bda27f2bad (diff) | |
| download | lwn-1930bb5ccf77da3bf1483e2cd85a12ec9c0ed0f6.tar.gz lwn-1930bb5ccf77da3bf1483e2cd85a12ec9c0ed0f6.zip | |
powerpc/fsl_pci: Don't set up inbound windows in kdump crash kernel
Otherwise, because the top end of the crash kernel is treated as the
absolute top of memory rather than the beginning of a reserved region,
in-flight DMA from the previous kernel that targets areas above the
crash kernel can trigger a storm of PCI errors. We only do this for
kdump, not normal kexec, in case kexec is being used to upgrade to a
kernel that wants a different inbound memory map.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Cc: Mingkai Hu <Mingkai.hu@freescale.com>
Diffstat (limited to 'arch/powerpc/kernel/setup_64.c')
0 files changed, 0 insertions, 0 deletions