[PATCH v9 02/17] x86_64: add KASan support

This patch adds arch specific code for kernel address sanitizer. 16TB of virtual addressed used for shadow memory. It's located in range [ec00 - fc00] between vmemmap and %esp fixup stacks. At early stage we map whole shadow region with zero page. Latter, after pages

[PATCH v9 02/17] x86_64: add KASan support

This patch adds arch specific code for kernel address sanitizer. 16TB of virtual addressed used for shadow memory. It's located in range [ec00 - fc00] between vmemmap and %esp fixup stacks. At early stage we map whole shadow region with zero page. Latter, after pages