mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2025-02-07 17:45:24 +07:00
eb0dd411bd
When we swtich to direct dma ops, we set the dma data union to have the dma offset. When we switch back to iommu table ops because of a later dma_set_mask, we need to restore the iommu table pointer. Without this change, crashes have been observed on kexec where (for reasons still being investigated) we fall back to a 32-bit dma mask on a particular device and then panic because the table pointer is not valid. The easiset way to find this value is to call pci_dma_dev_setup_pSeriesLP which will search up the pci tree until it finds the node with the table. Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Cc: Milton Miller <miltonm@bga.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Anton Blanchard <anton@samba.org> Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> |
||
|---|---|---|
| .. | ||
| alpha | ||
| arm | ||
| avr32 | ||
| blackfin | ||
| cris | ||
| frv | ||
| h8300 | ||
| ia64 | ||
| m32r | ||
| m68k | ||
| microblaze | ||
| mips | ||
| mn10300 | ||
| parisc | ||
| powerpc | ||
| s390 | ||
| score | ||
| sh | ||
| sparc | ||
| tile | ||
| um | ||
| unicore32 | ||
| x86 | ||
| xtensa | ||
| .gitignore | ||
| Kconfig | ||