diff options
Diffstat (limited to 'fs/proc/Kconfig')
| -rw-r--r-- | fs/proc/Kconfig | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/fs/proc/Kconfig b/fs/proc/Kconfig index d80a1431ef7b..6ae966c561e7 100644 --- a/fs/proc/Kconfig +++ b/fs/proc/Kconfig @@ -61,6 +61,25 @@ config PROC_VMCORE_DEVICE_DUMP as ELF notes to /proc/vmcore. You can still disable device dump using the kernel command line option 'novmcoredd'. +config NEED_PROC_VMCORE_DEVICE_RAM + bool + +config PROC_VMCORE_DEVICE_RAM + def_bool y + depends on PROC_VMCORE && NEED_PROC_VMCORE_DEVICE_RAM + depends on VIRTIO_MEM + help + If the elfcore hdr is allocated and prepared by the dump kernel + ("2nd kernel") instead of the crashed kernel, RAM provided by memory + devices such as virtio-mem will not be included in the dump + image, because only the device driver can properly detect them. + + With this config enabled, these RAM ranges will be queried from the + device drivers once the device gets probed, so they can be included + in the crash dump. + + Relevant architectures should select NEED_PROC_VMCORE_DEVICE_RAM. + config PROC_SYSCTL bool "Sysctl support (/proc/sys)" if EXPERT depends on PROC_FS |