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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-30 20:56:12 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-30 20:56:12 +0300 |
| commit | 8bb5021cc2ee5d5dd129a9f2f5ad2bb76eea297d (patch) | |
| tree | b27e97c398add26ab8633b4ba6123657a922115f /Documentation | |
| parent | 6f0306d1bfbc4d3e3fcfb949ee2c4af21071920a (diff) | |
| parent | 4a133eb351ccc275683ad49305d0b04dde903733 (diff) | |
| download | linux-8bb5021cc2ee5d5dd129a9f2f5ad2bb76eea297d.tar.xz | |
Merge tag 'powerpc-5.9-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Revert our removal of PROT_SAO, at least one user expressed an
interest in using it on Power9. Instead don't allow it to be used in
guests unless enabled explicitly at compile time.
- A fix for a crash introduced by a recent change to FP handling.
- Revert a change to our idle code that left Power10 with no idle
support.
- One minor fix for the new scv system call path to set PPR.
- Fix a crash in our "generic" PMU if branch stack events were enabled.
- A fix for the IMC PMU, to correctly identify host kernel samples.
- The ADB_PMU powermac code was found to be incompatible with
VMAP_STACK, so make them incompatible in Kconfig until the code can
be fixed.
- A build fix in drivers/video/fbdev/controlfb.c, and a documentation
fix.
Thanks to Alexey Kardashevskiy, Athira Rajeev, Christophe Leroy,
Giuseppe Sacco, Madhavan Srinivasan, Milton Miller, Nicholas Piggin,
Pratik Rajesh Sampat, Randy Dunlap, Shawn Anastasio, Vaidyanathan
Srinivasan.
* tag 'powerpc-5.9-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/32s: Disable VMAP stack which CONFIG_ADB_PMU
Revert "powerpc/powernv/idle: Replace CPU feature check with PVR check"
powerpc/perf: Fix reading of MSR[HV/PR] bits in trace-imc
powerpc/perf: Fix crashes with generic_compat_pmu & BHRB
powerpc/64s: Fix crash in load_fp_state() due to fpexc_mode
powerpc/64s: scv entry should set PPR
Documentation/powerpc: fix malformed table in syscall64-abi
video: fbdev: controlfb: Fix build for COMPILE_TEST=y && PPC_PMAC=n
selftests/powerpc: Update PROT_SAO test to skip ISA 3.1
powerpc/64s: Disallow PROT_SAO in LPARs by default
Revert "powerpc/64s: Remove PROT_SAO support"
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/powerpc/syscall64-abi.rst | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/powerpc/syscall64-abi.rst b/Documentation/powerpc/syscall64-abi.rst index 46caaadbb029..379817ca64d2 100644 --- a/Documentation/powerpc/syscall64-abi.rst +++ b/Documentation/powerpc/syscall64-abi.rst @@ -49,16 +49,18 @@ Register preservation rules Register preservation rules match the ELF ABI calling sequence with the following differences: -=========== ============= ======================================== --- For the sc instruction, differences with the ELF ABI --- +=========== ============= ======================================== r0 Volatile (System call number.) r3 Volatile (Parameter 1, and return value.) r4-r8 Volatile (Parameters 2-6.) cr0 Volatile (cr0.SO is the return error condition.) cr1, cr5-7 Nonvolatile lr Nonvolatile +=========== ============= ======================================== --- For the scv 0 instruction, differences with the ELF ABI --- +=========== ============= ======================================== r0 Volatile (System call number.) r3 Volatile (Parameter 1, and return value.) r4-r8 Volatile (Parameters 2-6.) |