Patrick Rudolph has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/35680 )
Change subject: cpu/qemu-x86: Add x86_64 bootblock support
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Patch Set 5:
(1 comment)
https://review.coreboot.org/c/coreboot/+/35680/2/src/cpu/x86/64bit/entry64.i...
File src/cpu/x86/64bit/entry64.inc:
https://review.coreboot.org/c/coreboot/+/35680/2/src/cpu/x86/64bit/entry64.i...
PS2, Line 25: $(CONFIG_ARCH_X86_64_PGTBL_LOC)
Looking at arch/x86/memlayout. […]
It can be located using walkcbfs, but there's no benefit, as the address is always CONFIG_ARCH_X86_64_PGTBL_LOC.
This is due to the fact that the page table contains entries with fixed physical addresses that are within the range
[CONFIG_ARCH_X86_64_PGTBL_LOC+1KiB:CONFIG_ARCH_X86_64_PGTBL_LOC+6KiB).
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