diff options
Diffstat (limited to 'arch/powerpc/kernel/exceptions-64s.S')
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64s.S | 19 |
1 files changed, 3 insertions, 16 deletions
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index b049c0bfa883..ffc15f4f079d 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -1408,22 +1408,9 @@ EXC_VIRT_NONE(0x4b00, 0x100) * * Call convention: * - * syscall register convention is in Documentation/powerpc/syscall64-abi.rst - * - * For hypercalls, the register convention is as follows: - * r0 volatile - * r1-2 nonvolatile - * r3 volatile parameter and return value for status - * r4-r10 volatile input and output value - * r11 volatile hypercall number and output value - * r12 volatile input and output value - * r13-r31 nonvolatile - * LR nonvolatile - * CTR volatile - * XER volatile - * CR0-1 CR5-7 volatile - * CR2-4 nonvolatile - * Other registers nonvolatile + * syscall and hypercalls register conventions are documented in + * Documentation/powerpc/syscall64-abi.rst and + * Documentation/powerpc/papr_hcalls.rst respectively. * * The intersection of volatile registers that don't contain possible * inputs is: cr0, xer, ctr. We may use these as scratch regs upon entry |