Commit 933abb9c authored by Suraj Jitindar Singh's avatar Suraj Jitindar Singh Committed by David Gibson
Browse files

target/ppc: Enforce that the root page directory size must be at least 5 



According to the ISA the root page directory size of a radix tree for
either process- or partition-scoped translation must be >= 5.

Thus add this to the list of conditions checked when validating the
partition table entry in validate_pate();

Signed-off-by: default avatarSuraj Jitindar Singh <sjitindarsingh@gmail.com>
Reviewed-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: default avatarCédric Le Goater <clg@kaod.org>
Message-Id: <20200330094946.24678-2-clg@kaod.org>
Reviewed-by: default avatarGreg Kurz <groug@kaod.org>
Signed-off-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
parent 087820e3

target/ppc/mmu-radix64.c

+3 −0
Original line number Diff line number Diff line
@@ -212,6 +212,9 @@ static bool validate_pate(PowerPCCPU *cpu, uint64_t lpid, ppc_v3_pate_t *pate) 
    if (lpid == 0 && !msr_hv) {

        return false;

    }

    if ((pate->dw0 & PATE1_R_PRTS) < 5) {

        return false;

    }

    /* More checks ... */

    return true;

}