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| author | Quentin Perret <qperret@google.com> | 2021-01-28 17:38:50 +0000 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2021-01-28 20:08:43 +0000 |
| commit | e30be1455bd3b0626602f42725c49200b2b871b4 (patch) | |
| tree | 9217786f14c8e45199138a75a3cbf66004a28c7b /arch/arm64/kernel/hyp-stub.S | |
| parent | c7b9095e87bf81f029fbae2e5d6a8354b6f11987 (diff) | |
| download | linux-e30be1455bd3b0626602f42725c49200b2b871b4.tar.bz2 | |
KVM: arm64: Move __hyp_set_vectors out of .hyp.text
The .hyp.text section is supposed to be reserved for the nVHE EL2 code.
However, there is currently one occurrence of EL1 executing code located
in .hyp.text when calling __hyp_{re}set_vectors(), which happen to sit
next to the EL2 stub vectors. While not a problem yet, such patterns
will cause issues when removing the host kernel from the TCB, so a
cleaner split would be preferable.
Fix this by delimiting the end of the .hyp.text section in hyp-stub.S.
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
Link: https://lore.kernel.org/r/20210128173850.2478161-1-qperret@google.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/kernel/hyp-stub.S')
| -rw-r--r-- | arch/arm64/kernel/hyp-stub.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/kernel/hyp-stub.S b/arch/arm64/kernel/hyp-stub.S index 160f5881a0b7..8a60f9c586bb 100644 --- a/arch/arm64/kernel/hyp-stub.S +++ b/arch/arm64/kernel/hyp-stub.S @@ -85,6 +85,8 @@ SYM_CODE_END(\label) invalid_vector el1_fiq_invalid invalid_vector el1_error_invalid + .popsection + /* * __hyp_set_vectors: Call this after boot to set the initial hypervisor * vectors as part of hypervisor installation. On an SMP system, this should |