Re: [PATCH v2 10/14] powerpc: Provide syscall wrapper

2022-08-10 Thread Andrew Donnellan
On Mon, 2022-07-25 at 16:30 +1000, Rohan McLure wrote: > Implement syscall wrapper as per s390, x86, arm64. When enabled > cause handlers to accept parameters from a stack frame rather than > from user scratch register state. This allows for user registers to > be > safely cleared in order to reduc

Re: [PATCH v2 10/14] powerpc: Provide syscall wrapper

2022-08-08 Thread Christophe Leroy
Le 25/07/2022 à 08:30, Rohan McLure a écrit : > Implement syscall wrapper as per s390, x86, arm64. When enabled > cause handlers to accept parameters from a stack frame rather than > from user scratch register state. This allows for user registers to be > safely cleared in order to reduce caller

Re: [PATCH v2 10/14] powerpc: Provide syscall wrapper

2022-08-05 Thread Christophe Leroy
Le 25/07/2022 à 08:30, Rohan McLure a écrit : > Implement syscall wrapper as per s390, x86, arm64. When enabled > cause handlers to accept parameters from a stack frame rather than > from user scratch register state. This allows for user registers to be > safely cleared in order to reduce caller

[PATCH v2 10/14] powerpc: Provide syscall wrapper

2022-07-24 Thread Rohan McLure
Implement syscall wrapper as per s390, x86, arm64. When enabled cause handlers to accept parameters from a stack frame rather than from user scratch register state. This allows for user registers to be safely cleared in order to reduce caller influence on speculation within syscall routine. The wra