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| author |   Laurent Dufour <ldufour@linux.ibm.com> | 2019-10-01 15:29:28 +0200 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-10-09 17:16:59 +1100 |
| commit | 4ab8a485f7bc69e04e3e8d75f62bdcac5f4ed02e (patch) | |
| tree | 8485e7a614bf8aef882cb07f20d2c8fb312d046a /arch/powerpc | |
| parent | powerpc/64s/radix: Fix build failure with RADIX_MMU=n (diff) | |
| download | linux-dev-4ab8a485f7bc69e04e3e8d75f62bdcac5f4ed02e.tar.xz linux-dev-4ab8a485f7bc69e04e3e8d75f62bdcac5f4ed02e.zip | |
powerpc/pseries: Remove confusing warning message.
Since 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@canb.auug.org.au>
Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191001132928.72555-1-ldufour@linux.ibm.com
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/platforms/pseries/lpar.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index b53359258d99..f87a5c64e24d 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -1419,6 +1419,9 @@ void __init pseries_lpar_read_hblkrm_characteristics(void) unsigned char local_buffer[SPLPAR_TLB_BIC_MAXLENGTH]; int call_status, len, idx, bpsize; + if (!firmware_has_feature(FW_FEATURE_BLOCK_REMOVE)) + return; + spin_lock(&rtas_data_buf_lock); memset(rtas_data_buf, 0, RTAS_DATA_BUF_SIZE); call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1, |