Re: [PATCH] Re: [XenPPC] current crash

[Orran Y Krieger <okrieg@xxxxxxxxxx>]

worked, thanks!!!

Jimi Xenidis <jimix@xxxxxxxxxxxxxx> wrote on 08/25/2006 08:22:27 AM:

>
>
> Orran || Maria, please test and ack the following patch.
> BTW: Thanks to Jonathan Wildstrom for pointing the H_READ_4 error in
> the rhype code.
>
> --
> diff -r d87d602408d5 xen/arch/powerpc/papr/xlate.c
> --- a/xen/arch/powerpc/papr/xlate.c   Thu Aug 24 21:07:46 2006 -0400
> +++ b/xen/arch/powerpc/papr/xlate.c   Fri Aug 25 08:13:12 2006 -0400
> @@ -30,12 +30,6 @@
>  #include <asm/papr.h>
>  #include <asm/hcalls.h>
>
> -static void not_yet(struct cpu_user_regs *regs)
> -{
> -    printk("not implemented yet: 0x%lx\n", regs->gprs[3]);
> -    for (;;);
> -}
> -
>  #ifdef USE_PTE_INSERT
>  static inline void pte_insert(union pte volatile *pte,
>          ulong vsid, ulong rpn, ulong lrpn)
> @@ -493,8 +487,42 @@ static void h_remove(struct cpu_user_reg
>      pte_tlbie(&lpte, ptex);
>  }
>
> +static void h_read(struct cpu_user_regs *regs)
> +{
> +    ulong flags = regs->gprs[4];
> +    ulong ptex = regs->gprs[5];
> +    struct vcpu *v = get_current();
> +    struct domain *d = v->domain;
> +    struct domain_htab *htab = &d->arch.htab;
> +    union pte volatile *pte;
> +
> +   if (flags & H_READ_4)
> +        ptex &= ~0x3UL;
> +
> +    if (ptex > (1UL << htab->log_num_ptes)) {
> +        regs->gprs[3] = H_Parameter;
> +        printk("%s: bad ptex: 0x%lx\n", __func__, ptex);
> +        return;
> +    }
> +    pte = &htab->map[ptex];
> +    regs->gprs[4] = pte[0].words.vsid;
> +    regs->gprs[5] = pte[0].words.rpn;
> +
> +    if (!(flags & H_READ_4)) {
> +        /* dump another 3 PTEs */
> +        regs->gprs[6] = pte[1].words.vsid;
> +        regs->gprs[7] = pte[1].words.rpn;
> +        regs->gprs[8] = pte[2].words.vsid;
> +        regs->gprs[9] = pte[2].words.rpn;
> +        regs->gprs[10] = pte[3].words.vsid;
> +        regs->gprs[11] = pte[3].words.rpn;
> +    }
> +
> +    regs->gprs[3] = H_Success;
> +}
> +
>  __init_papr_hcall(H_ENTER, h_enter);
> -__init_papr_hcall(H_READ, not_yet);
> +__init_papr_hcall(H_READ, h_read);
>  __init_papr_hcall(H_REMOVE, h_remove);
>  __init_papr_hcall(H_CLEAR_MOD, h_clear_mod);
>  __init_papr_hcall(H_CLEAR_REF, h_clear_ref);


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