Patch "kvm: arm: don't treat unavailable HYP mode as an error" has been added to the 4.14-stable tree

Patch "kvm: arm: don't treat unavailable HYP mode as an error" has been added to the 4.14-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    kvm: arm: don't treat unavailable HYP mode as an error

to the 4.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     kvm-arm-don-t-treat-unavailable-hyp-mode-as-an-error.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Fri Feb 23 11:45:09 CET 2018
From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date: Tue, 28 Nov 2017 15:18:19 +0000
Subject: kvm: arm: don't treat unavailable HYP mode as an error

From: Ard Biesheuvel <ard.biesheuvel@linaro.org>


[ Upstream commit 58d0d19a204604ca0da26058828a53558b265da3 ]

Since it is perfectly legal to run the kernel at EL1, it is not
actually an error if HYP mode is not available when attempting to
initialize KVM, given that KVM support cannot be built as a module.
So demote the kvm_err() to kvm_info(), which prevents the error from
appearing on an otherwise 'quiet' console.

Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 virt/kvm/arm/arm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/virt/kvm/arm/arm.c
+++ b/virt/kvm/arm/arm.c
@@ -1453,7 +1453,7 @@ int kvm_arch_init(void *opaque)
 	bool in_hyp_mode;
 
 	if (!is_hyp_mode_available()) {
-		kvm_err("HYP mode not available\n");
+		kvm_info("HYP mode not available\n");
 		return -ENODEV;
 	}
 


Patches currently in stable-queue which might be from ard.biesheuvel@linaro.org are

queue-4.14/kvm-arm-don-t-treat-unavailable-hyp-mode-as-an-error.patch