Commit c6fd28fd authored by Suraj Jitindar Singh's avatar Suraj Jitindar Singh Committed by David Gibson
Browse files

target/ppc: Update tlbie to check privilege level based on GTSE 



The Guest Translation Shootdown Enable (GTSE) bit in the Logical Partition
Control Register (LPCR) can be set to enable a guest to use the tlbie
instruction directly to invalidate translations.

When the GTSE bit is set then the tlbie instruction is supervisor
privileged, otherwise it is hypervisor privileged.

Add a guest translation shootdown enable (gtse) field to the diassembly
context and use this to check the correct privilege level at code
generation time.

Signed-off-by: default avatarSuraj Jitindar Singh <sjitindarsingh@gmail.com>
Reviewed-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
parent 6de83307

target/ppc/translate.c

+8 −1
Original line number Diff line number Diff line
@@ -218,6 +218,7 @@ struct DisasContext { 
    bool vsx_enabled;

    bool spe_enabled;

    bool tm_enabled;

    bool gtse;

    ppc_spr_t *spr_cb; /* Needed to check rights for mfspr/mtspr */

    int singlestep_enabled;

    uint64_t insns_flags;
@@ -4538,7 +4539,12 @@ static void gen_tlbie(DisasContext *ctx) 
    GEN_PRIV;

#else

    TCGv_i32 t1;

    CHK_HV;



    if (ctx->gtse) {

        CHK_SV; /* If gtse is set then tblie is supervisor privileged */

    } else {

        CHK_HV; /* Else hypervisor privileged */

    }



    if (NARROW_MODE(ctx)) {

        TCGv t0 = tcg_temp_new();
@@ -7252,6 +7258,7 @@ void gen_intermediate_code(CPUPPCState *env, struct TranslationBlock *tb) 
        ctx.tm_enabled = false;

    }

#endif

    ctx.gtse = !!(env->spr[SPR_LPCR] & LPCR_GTSE);

    if ((env->flags & POWERPC_FLAG_SE) && msr_se)

        ctx.singlestep_enabled = CPU_SINGLE_STEP;

    else