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Diffstat (limited to 'Documentation/arch')
| -rw-r--r-- | Documentation/arch/arm64/booting.rst | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/arch/arm64/booting.rst b/Documentation/arch/arm64/booting.rst index 2f666a7c303c..e4f953839f71 100644 --- a/Documentation/arch/arm64/booting.rst +++ b/Documentation/arch/arm64/booting.rst @@ -466,6 +466,17 @@ Before jumping into the kernel, the following conditions must be met: - HDFGWTR2_EL2.nPMICFILTR_EL0 (bit 3) must be initialised to 0b1. - HDFGWTR2_EL2.nPMUACR_EL1 (bit 4) must be initialised to 0b1. + For CPUs with SPE data source filtering (FEAT_SPE_FDS): + + - If EL3 is present: + + - MDCR_EL3.EnPMS3 (bit 42) must be initialised to 0b1. + + - If the kernel is entered at EL1 and EL2 is present: + + - HDFGRTR2_EL2.nPMSDSFR_EL1 (bit 19) must be initialised to 0b1. + - HDFGWTR2_EL2.nPMSDSFR_EL1 (bit 19) must be initialised to 0b1. + For CPUs with Memory Copy and Memory Set instructions (FEAT_MOPS): - If the kernel is entered at EL1 and EL2 is present: |