Messages in this thread | | | Date | Mon, 9 Jan 2023 18:23:44 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH v3 0/2] x86/boot: fix relying on link order |
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* Alexander Lobakin <alexandr.lobakin@intel.com> wrote:
> Currently, the x86 decompressor code expects the kernel entry point to be > exactly at the beginning of the kernel image. It's always been true, but > is hacky in multiple ways: special .head.text section and linking certain > object files first to have them at the beginning. > Make the code independent from the link order and then kill the latter. > The former is to be resolved a bit later. > > I didn't put any "Fixes:" tag since it's not linear. The lines changed > with 0001 came from the initial x86 KASLR series, but that unconditional > jump to the kernel beginning already was there. It goes at least from the > set that brought relocatable kernel support to x86, but this is quite > prehistoric already and might not look really relatable. > > Alexander Lobakin (2): > x86/boot: robustify calling startup_{32,64}() from the decompressor > code > scripts/head-object-list: remove x86 from the list > > arch/x86/boot/compressed/head_32.S | 2 +- > arch/x86/boot/compressed/head_64.S | 2 +- > arch/x86/boot/compressed/misc.c | 18 +++++++++++------- > scripts/head-object-list.txt | 6 ------ > 4 files changed, 13 insertions(+), 15 deletions(-)
That's a really nice fix/robustification improvement - I've applied your series to tip:x86/boot and will push it out after some testing.
Thanks,
Ingo
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