x86/mtrr: Add get_effective_type() service function

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Add a service function for obtaining the effective cache mode of
overlapping MTRR registers.

Make use of that function in check_type_overlap().

Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20230502120931.20719-11-jgross@suse.com
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>

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Juergen Gross 2023-05-02 14:09:25 +02:00 • committed by Borislav Petkov (AMD)

parent 961c6a4326

commit 1ca1209904

1 changed files with 19 additions and 20 deletions

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arch/x86/kernel/cpu/mtrr/generic.c

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