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Diffstat (limited to 'Documentation/powerpc/elfnote.rst')
| -rw-r--r-- | Documentation/powerpc/elfnote.rst | 29 |
1 files changed, 14 insertions, 15 deletions
diff --git a/Documentation/powerpc/elfnote.rst b/Documentation/powerpc/elfnote.rst index 2a5c4beeb809..06602248621c 100644 --- a/Documentation/powerpc/elfnote.rst +++ b/Documentation/powerpc/elfnote.rst @@ -8,8 +8,7 @@ capabilities and information which can be used by a bootloader or userland. Types and Descriptors --------------------- -The types to be used with the "PowerPC" namesapce are defined in the -include/uapi/asm/elfnote.h +The types to be used with the "PowerPC" namesapce are defined in [#f1]_. 1) PPC_ELFNOTE_CAPABILITIES @@ -18,25 +17,25 @@ bitmap as "descriptor" field. Each bit is described below: - Ultravisor-capable bit (PowerNV only). +.. code-block:: c + #define PPCCAP_ULTRAVISOR_BIT (1 << 0) - Indicate that the powerpc kernel binary knows how to run in an - ultravisor-enabled system. +Indicate that the powerpc kernel binary knows how to run in an +ultravisor-enabled system. - In an ultravisor-enabled system, some machine resources are now controlled - by the ultravisor. If the kernel is not ultravisor-capable, but it ends up - being run on a machine with ultravisor, the kernel will probably crash - trying to access ultravisor resources. For instance, it may crash in early - boot trying to set the partition table entry 0. +In an ultravisor-enabled system, some machine resources are now controlled +by the ultravisor. If the kernel is not ultravisor-capable, but it ends up +being run on a machine with ultravisor, the kernel will probably crash +trying to access ultravisor resources. For instance, it may crash in early +boot trying to set the partition table entry 0. - In an ultravisor-enabled system, a bootloader could warn the user or prevent - the kernel from being run if the PowerPC ultravisor capability doesn't exist - or the Ultravisor-capable bit is not set. +In an ultravisor-enabled system, a bootloader could warn the user or prevent +the kernel from being run if the PowerPC ultravisor capability doesn't exist +or the Ultravisor-capable bit is not set. References ---------- -arch/powerpc/include/asm/elfnote.h -arch/powerpc/kernel/note.S - +.. [#f1] arch/powerpc/include/asm/elfnote.h |