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| author | Gaurav Batra <gbatra@linux.vnet.ibm.com> | 2023-05-25 09:34:54 -0500 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-05-30 16:33:10 +1000 |
| commit | 9d2ccf00bddc268045e3d65a8108d61ada0e4b4e (patch) | |
| tree | c5910fc79f5efb0cc11c2a285f34dc4d1092cc95 /tools/perf/util/bpf_skel/vmlinux.h | |
| parent | 81d358b118dc364bd147432db569d4d400a5a4f2 (diff) | |
| download | lwn-9d2ccf00bddc268045e3d65a8108d61ada0e4b4e.tar.gz lwn-9d2ccf00bddc268045e3d65a8108d61ada0e4b4e.zip | |
powerpc/iommu: Limit number of TCEs to 512 for H_STUFF_TCE hcall
Currently in tce_freemulti_pSeriesLP() there is no limit on how many
TCEs are passed to the H_STUFF_TCE hcall. This has not caused an issue
until now, but newer firmware releases have started enforcing a limit of
512 TCEs per call.
The limit is correct per the specification (PAPR v2.12 § 14.5.4.2.3).
The code has been in it's current form since it was initially merged.
Cc: stable@vger.kernel.org
Signed-off-by: Gaurav Batra <gbatra@linux.vnet.ibm.com>
Reviewed-by: Brian King <brking@linux.vnet.ibm.com>
[mpe: Tweak change log wording & add PAPR reference]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230525143454.56878-1-gbatra@linux.vnet.ibm.com
Diffstat (limited to 'tools/perf/util/bpf_skel/vmlinux.h')
0 files changed, 0 insertions, 0 deletions