Re: [PATCH v3 1/2] x86/boot/64: Make level2_kernel_pgt pages invalid outside kernel area.

On 9/24/19 2:03 PM, Steve Wahl wrote: > The solution is to invalidate the pages of this table outside the > kernel image's space before the page table is activated. This patch > has been validated to fix this problem on our hardware. Looks good, thanks for the changes! For both patches:

Re: [PATCH v3 1/2] x86/boot/64: Make level2_kernel_pgt pages invalid outside kernel area.

On Tue, Sep 24, 2019 at 04:03:55PM -0500, Steve Wahl wrote: > Our hardware (UV aka Superdome Flex) has address ranges marked > reserved by the BIOS. Access to these ranges is caught as an error, > causing the BIOS to halt the system. > > Initial page tables mapped a large range of physical

[PATCH v3 1/2] x86/boot/64: Make level2_kernel_pgt pages invalid outside kernel area.

Our hardware (UV aka Superdome Flex) has address ranges marked reserved by the BIOS. Access to these ranges is caught as an error, causing the BIOS to halt the system. Initial page tables mapped a large range of physical addresses that were not checked against the list of BIOS reserved addresses,