On Mon, Nov 20, 2017 at 10:55:14AM +0100, Marc-André Lureau wrote: > Hi, > > This series adds DMA operations support to the qemu fw_cfg kernel > module and populates "etc/vmcoreinfo" with vmcoreinfo location > details. > > Note: the support for this entry handling has been merged for upcoming > qemu release (2.11).
Does not help. Still get crashes from ltp. > v7: > - add a patch to fix driver remove() > - remove DMA operatiom timeout (qemu finishes sync today) > - synchronize the DMA transfer before reading from CPU > - removed kmalloc() use static allocation instead > - drop some r-b tags > > v6: > - change acpi_acquire_global_lock() error to return EINVAL > (instead of EBUSY) > - replace 0 as pointer argument for NULL > - add Gabriel r-b/a-b tags > > v5: > - resent to CC kdump people on the paddr_vmcoreinfo_note() export patch > > v4: > - export paddr_vmcoreinfo_note() to fix fw_cfg.ko build > - fix build with !CONFIG_CRASH_CORE > - replace the unbounded yield() loop with a usleep_range() loop and a > 200ms timeout > - do not write vmcoreinfo entry when running the kdump kernel (D. Hatayama) > - drop the experimental sysfs write support patch from this series > > v3: (thanks kbuild) > - add "fw_cfg: fix the command line module name" patch > - fix build of "fw_cfg: add DMA register" with CONFIG_FW_CFG_SYSFS_CMDLINE=y > - fix 'Wshift-count-overflow' > > v2: > - use platform device for dma mapping > - add etc/vmcoreinfo patch > - some code cleanups > > Marc-André Lureau (5): > fw_cfg: fix driver remove > fw_cfg: add DMA register > fw_cfg: do DMA read operation > crash: export paddr_vmcoreinfo_note() > fw_cfg: write vmcoreinfo details > > drivers/firmware/qemu_fw_cfg.c | 276 > ++++++++++++++++++++++++++++++++++++----- > kernel/crash_core.c | 1 + > 2 files changed, 247 insertions(+), 30 deletions(-) > > -- > 2.15.0.277.ga3d2ad2c43
