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| author |   James Morse <james.morse@arm.com> | 2021-11-18 13:16:23 +0000 |
|---|---|---|
| committer | James Morse <james.morse@arm.com> | 2022-02-15 17:40:16 +0000 |
| commit | c47e4d04ba0f1ea17353d85d45f611277507e07a (patch) | |
| tree | 4d27a89b64dc825a3b6e359487ee437c32a60c77 /arch/arm64/kernel/vmlinux.lds.S | |
| parent | arm64: entry: Move trampoline macros out of ifdef'd section (diff) | |
| download | linux-dev-c47e4d04ba0f1ea17353d85d45f611277507e07a.tar.xz linux-dev-c47e4d04ba0f1ea17353d85d45f611277507e07a.zip | |
arm64: entry: Make the kpti trampoline's kpti sequence optional
Spectre-BHB needs to add sequences to the vectors. Having one global
set of vectors is a problem for big/little systems where the sequence
is costly on cpus that are not vulnerable.
Making the vectors per-cpu in the style of KVM's bh_harden_hyp_vecs
requires the vectors to be generated by macros.
Make the kpti re-mapping of the kernel optional, so the macros can be
used without kpti.
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: James Morse <james.morse@arm.com>
Diffstat (limited to 'arch/arm64/kernel/vmlinux.lds.S')
0 files changed, 0 insertions, 0 deletions