forked from Minki/linux
9da5ac236d
When we soft-reboot (eg, kexec) from one kernel into the next, we need to ensure that we enter the new kernel in the same processor mode as when we were entered, so that (eg) the new kernel can install its own hypervisor - the old kernel's hypervisor will have been overwritten. In order to do this, we need to pass a flag to cpu_reset() so it knows what to do, and we need to modify the kernel's own hypervisor stub to allow it to handle a soft-reboot. As we are always guaranteed to install our own hypervisor if we're entered in HYP32 mode, and KVM will have moved itself out of the way on kexec/normal reboot, we can assume that our hypervisor is in place when we want to kexec, so changing our hypervisor API should not be a problem. Tested-by: Keerthy <j-keerthy@ti.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <cdall@linaro.org> |
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| uapi/asm | ||