On 2021-01-28 17:38, Quentin Perret wrote:
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.
Signed-off-by: Quentin Perret <qperret@xxxxxxxxxx>
---
arch/arm64/kernel/hyp-stub.S | 2 ++
1 file changed, 2 insertions(+)
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
Thanks for tracking this one down, Quentin.
Catalin, Will: should you want to take this one via the arm64 tree,
please add my
Acked-by: Marc Zyngier <maz:kernel.org>
Thanks,
M.
--
Jazz is not dead. It just smells funny...
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