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The CPU Measurement Sampling Facility (CPUM_SF) installs large buffers to save samples collected by hardware. These buffers are organized as Sample Data Buffer Tables (SDBT) and Sample Data Buffers (SDB). SDBs contain the samples which are extracted and saved in the perf ring buffer. The SDBTs are chained using real addresses and refer to SDBs using real addresses. Adds proper virtual to phyiscal address translation to the buffer chaining. The current constraint which requires virtual equals real address layout is removed. Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Acked-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> |
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