Re: [PATCH 18/18] powerpc/fault: Use analyse_instr() to check for store with updates to sp

On Fri, Feb 7, 2020 at 7:16 PM Greg Kurz wrote: > > On Thu, 19 Dec 2019 01:11:33 +1100 > Daniel Axtens wrote: > > > Jordan Niethe writes: > > > > > A user-mode access to an address a long way below the stack pointer is > > > only valid if the instruction is one that would update the stack pointe

Re: [PATCH 18/18] powerpc/fault: Use analyse_instr() to check for store with updates to sp

On Thu, 19 Dec 2019 01:11:33 +1100 Daniel Axtens wrote: > Jordan Niethe writes: > > > A user-mode access to an address a long way below the stack pointer is > > only valid if the instruction is one that would update the stack pointer > > to the address accessed. This is checked by directly look

Re: [PATCH 18/18] powerpc/fault: Use analyse_instr() to check for store with updates to sp

Jordan Niethe writes: > A user-mode access to an address a long way below the stack pointer is > only valid if the instruction is one that would update the stack pointer > to the address accessed. This is checked by directly looking at the > instructions op-code. As a result is does not take into

[PATCH 18/18] powerpc/fault: Use analyse_instr() to check for store with updates to sp

A user-mode access to an address a long way below the stack pointer is only valid if the instruction is one that would update the stack pointer to the address accessed. This is checked by directly looking at the instructions op-code. As a result is does not take into account prefixed instructions.