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Diffstat (limited to 'arch/s390/Kconfig')
| -rw-r--r-- | arch/s390/Kconfig | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 9515d4bf1683..df6b371ed214 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -614,6 +614,25 @@ config RANDOMIZE_BASE as a security feature that deters exploit attempts relying on knowledge of the location of kernel internals. +config KERNEL_IMAGE_BASE + hex "Kernel image base address" + range 0x100000 0x1FFFFFE0000000 if !KASAN + range 0x100000 0x1BFFFFE0000000 if KASAN + default 0x3FFE0000000 if !KASAN + default 0x7FFFE0000000 if KASAN + help + This is the address at which the kernel image is loaded in case + Kernel Address Space Layout Randomization (KASLR) is disabled. + + In case the Protected virtualization guest support is enabled the + Ultravisor imposes a virtual address limit. If the value of this + option leads to the kernel image exceeding the Ultravisor limit, + this option is ignored and the image is loaded below the limit. + + If the value of this option leads to the kernel image overlapping + the virtual memory where other data structures are located, this + option is ignored and the image is loaded above the structures. + endmenu menu "Memory setup" |