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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 |
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