diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2021-06-18 01:51:06 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-06-25 00:06:56 +1000 |
| commit | dd152f70bdc1b91445b10c65ac874b90c93fb3b5 (patch) | |
| tree | cce381803868e5b1053cbc8cd739bc2aeaa6979c /arch | |
| parent | e754f4d13e3919aafa485657599907aa63b9a40c (diff) | |
powerpc/64s: system call avoid setting MSR[RI] until we set MSR[EE]
This extends the MSR[RI]=0 window a little further into the system
call in order to pair RI and EE enabling with a single mtmsrd.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210617155116.2167984-8-npiggin@gmail.com
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64s.S | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/interrupt_64.S | 4 |
2 files changed, 2 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 3d238a3b2a24..18c96df269c0 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -1861,8 +1861,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_REAL_LE) mtctr r10 bctr .else - li r10,MSR_RI - mtmsrd r10,1 /* Set RI (EE=0) */ #ifdef CONFIG_RELOCATABLE __LOAD_HANDLER(r10, system_call_common) mtctr r10 diff --git a/arch/powerpc/kernel/interrupt_64.S b/arch/powerpc/kernel/interrupt_64.S index e17a77a2c1a1..ab6b99609d0e 100644 --- a/arch/powerpc/kernel/interrupt_64.S +++ b/arch/powerpc/kernel/interrupt_64.S @@ -283,9 +283,9 @@ END_BTB_FLUSH_SECTION * trace_hardirqs_off(). */ li r11,IRQS_ALL_DISABLED - li r12,PACA_IRQ_HARD_DIS + li r12,-1 /* Set MSR_EE and MSR_RI */ stb r11,PACAIRQSOFTMASK(r13) - stb r12,PACAIRQHAPPENED(r13) + mtmsrd r12,1 /* Calling convention has r9 = orig r0, r10 = regs */ mr r9,r0 |