linux-kernel - Re: [PATCH] powerpc/pseries: Remove confusing warning message.

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Message-Id: <46qLXX4HkYz9sP6@ozlabs.org>
Date:   Fri, 11 Oct 2019 19:22:04 +1100 (AEDT)
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Laurent Dufour <ldufour@...ux.ibm.com>, sfr@...ux.ibm.com,
        benh@...nel.crashing.org, paulus@...ba.org,
        aneesh.kumar@...ux.ibm.com, npiggin@...il.com,
        linuxppc-dev@...ts.ozlabs.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc/pseries: Remove confusing warning message.

On Tue, 2019-10-01 at 13:29:28 UTC, Laurent Dufour wrote:
> Since the commit 1211ee61b4a8 ("powerpc/pseries: Read TLB Block Invalidate
> Characteristics"), a warning message is displayed when booting a guest on
> top of KVM:
> 
> lpar: arch/powerpc/platforms/pseries/lpar.c pseries_lpar_read_hblkrm_characteristics Error calling get-system-parameter (0xfffffffd)
> 
> This message is displayed because this hypervisor is not supporting the
> H_BLOCK_REMOVE hcall and thus is not exposing the corresponding feature.
> 
> Reading the TLB Block Invalidate Characteristics should not be done if the
> feature is not exposed.
> 
> Fixes: 1211ee61b4a8 ("powerpc/pseries: Read TLB Block Invalidate Characteristics")
> Reported-by: Stephen Rothwell <sfr@...ux.ibm.com>
> Signed-off-by: Laurent Dufour <ldufour@...ux.ibm.com>

Reapplied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/4ab8a485f7bc69e04e3e8d75f62bdcac5f4ed02e

cheers