[PATCH] arm64: KVM: Avoid setting the upper 32 bits of TCR_EL2 and CPTR_EL2 to 1

[Marc Zyngier]

On Thu, 25 Nov 2021 15:20:14 +0000, Catalin Marinas wrote:
> Having a signed (1 << 31) constant for TCR_EL2_RES1 and CPTR_EL2_TCPAC
> causes the upper 32-bit to be set to 1 when assigning them to a 64-bit
> variable. Bit 32 in TCR_EL2 is no longer RES0 in ARMv8.7: with FEAT_LPA2
> it changes the meaning of bits 49:48 and 9:8 in the stage 1 EL2 page
> table entries. As a result of the sign-extension, a non-VHE kernel can
> no longer boot on a model with ARMv8.7 enabled.
> 
> [...]

Applied to fixes, thanks!

[1/1] arm64: KVM: Avoid setting the upper 32 bits of TCR_EL2 and CPTR_EL2 to 1
      commit: 1f80d15020d7f130194821feb1432b67648c632d

Cheers,

	M.
-- 
Without deviation from the norm, progress is not possible.