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Re: [PATCH] target/ppc: Add ISA v3.1 LEV indication in SRR1 for system c


From: Cédric Le Goater
Subject: Re: [PATCH] target/ppc: Add ISA v3.1 LEV indication in SRR1 for system call interrupts
Date: Fri, 23 Jun 2023 11:32:01 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.12.0

On 6/20/23 15:13, Nicholas Piggin wrote:
System call interrupts in ISA v3.1 CPUs add a LEV indication in SRR1
that corresponds with the LEV field of the instruction that caused the
interrupt.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>


Applied to ppc-next.

Thanks,

C.



---
This is unchanged, just taken out of the bigger series since it is
independent.

Thanks,
Nick

  target/ppc/excp_helper.c | 4 ++++
  1 file changed, 4 insertions(+)

diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
index 77bfc18734..c7550fea13 100644
--- a/target/ppc/excp_helper.c
+++ b/target/ppc/excp_helper.c
@@ -1591,6 +1591,10 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int excp)
              vhc->hypercall(cpu->vhyp, cpu);
              return;
          }
+        if (env->insns_flags2 & PPC2_ISA310) {
+            /* ISAv3.1 puts LEV into SRR1 */
+            msr |= lev << 20;
+        }
          if (lev == 1) {
              new_msr |= (target_ulong)MSR_HVB;
          }




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