[PATCH v5 1/7] powerpc/64: Add INTERRUPT_SANITIZE_REGISTERS Kconfig

[Michael Ellerman]

On Thu, 1 Dec 2022 18:10:13 +1100, Rohan McLure wrote:
> Add Kconfig option for enabling clearing of registers on arrival in an
> interrupt handler. This reduces the speculation influence of registers
> on kernel internals. The option will be consumed by 64-bit systems that
> feature speculation and wish to implement this mitigation.
> 
> This patch only introduces the Kconfig option, no actual mitigations.
> 
> [...]

Applied to powerpc/next.

[1/7] powerpc/64: Add INTERRUPT_SANITIZE_REGISTERS Kconfig
      https://git.kernel.org/powerpc/c/0e23347f1e0f2b1c98f87a4088231d0d6f59b962
[2/7] powerpc/64: Add interrupt register sanitisation macros
      https://git.kernel.org/powerpc/c/cbf892ba56677b942020d2bc7ca9b79281fa0bcc
[3/7] powerpc/64: Sanitise common exit code for interrupts
      https://git.kernel.org/powerpc/c/75c5d6b1e194c341371639469fcb8691afa0e254
[4/7] powerpc/64s: IOption for MSR stored in r12
      https://git.kernel.org/powerpc/c/2487fd2e6d61b5293eed8ecd25add3cc78593d38
[5/7] powerpc/64s: Zeroise gprs on interrupt routine entry on Book3S
      https://git.kernel.org/powerpc/c/1df45d78b8a89da6544fab5267e8f5da15073d28
[6/7] powerpc/64e: Clear gprs on interrupt routine entry on Book3E
      https://git.kernel.org/powerpc/c/efe1691ac814e4cf3653538b701662cbd905bddc
[7/7] powerpc/64: Sanitise user registers on interrupt in pseries, POWERNV
      https://git.kernel.org/powerpc/c/7cd882df9485988f7d9b3fae04fde4e95a4c7a74

cheers