x86/mm/64: Flush global TLB on boot and AP bringup

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The AP bringup code uses the trampoline_pgd page-table which
establishes global mappings in the user range of the address space.
Flush the global TLB entries after the indentity mappings are removed so
no stale entries remain in the TLB.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20211202153226.22946-3-joro@8bytes.org

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Joerg Roedel 2021-12-02 16:32:24 +01:00 • committed by Borislav Petkov

parent 9de4999050

commit f154f29085

4 changed files with 27 additions and 7 deletions

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5

arch/x86/include/asm/tlbflush.h

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2

arch/x86/kernel/head64.c

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19

arch/x86/kernel/head_64.S

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8

arch/x86/mm/tlb.c

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