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Date:   Tue, 21 Aug 2018 17:19:38 +0200
From:   Borislav Petkov <>
To:     Brijesh Singh <>
Cc:     "" <>,
        "" <>,
        "" <>,
        "Lendacky, Thomas" <>,
        Thomas Gleixner <>,
        Paolo Bonzini <>,
        Pavel Tatashin <>
Subject: Re: SEV guest regression in 4.18

On Tue, Aug 21, 2018 at 09:37:56AM -0500, Brijesh Singh wrote:
> Those variables are accessed immediately by the tsc calibration code
> path hence we will not able to delay the allocation.

If you mean, check_tsc_sync_source/_target(), those are called pretty
late, AFAICT.

And I see a setup_arch() -> init_mem_mapping -> ... ->
kernel_physical_mapping_init() call which happens much earlier.

Again, AFAICT. You probably should try it though, to make sure.


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