[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 17 of 25] libxc: convert mmuext op interface over to hypercall buffers
# HG changeset patch # User Ian Campbell <ian.campbell@xxxxxxxxxx> # Date 1287650255 -3600 # Node ID 0d9e118f705231b0ac88b9ae98f996e0e62152c7 # Parent 38b752b683f3aec13669c1019e6637e3d3aeb434 libxc: convert mmuext op interface over to hypercall buffers Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx> diff -r 38b752b683f3 -r 0d9e118f7052 tools/libxc/xc_private.c --- a/tools/libxc/xc_private.c Thu Oct 21 09:37:35 2010 +0100 +++ b/tools/libxc/xc_private.c Thu Oct 21 09:37:35 2010 +0100 @@ -343,23 +343,24 @@ int xc_mmuext_op( domid_t dom) { DECLARE_HYPERCALL; + DECLARE_HYPERCALL_BOUNCE(op, nr_ops*sizeof(*op), XC_HYPERCALL_BUFFER_BOUNCE_BOTH); long ret = -EINVAL; - if ( hcall_buf_prep(xch, (void **)&op, nr_ops*sizeof(*op)) != 0 ) + if ( xc_hypercall_bounce_pre(xch, op) ) { - PERROR("Could not lock memory for Xen hypercall"); + PERROR("Could not bounce memory for mmuext op hypercall"); goto out1; } hypercall.op = __HYPERVISOR_mmuext_op; - hypercall.arg[0] = (unsigned long)op; + hypercall.arg[0] = HYPERCALL_BUFFER_AS_ARG(op); hypercall.arg[1] = (unsigned long)nr_ops; hypercall.arg[2] = (unsigned long)0; hypercall.arg[3] = (unsigned long)dom; ret = do_xen_hypercall(xch, &hypercall); - hcall_buf_release(xch, (void **)&op, nr_ops*sizeof(*op)); + xc_hypercall_bounce_post(xch, op); out1: return ret; @@ -369,22 +370,23 @@ static int flush_mmu_updates(xc_interfac { int err = 0; DECLARE_HYPERCALL; + DECLARE_NAMED_HYPERCALL_BOUNCE(updates, mmu->updates, mmu->idx*sizeof(*mmu->updates), XC_HYPERCALL_BUFFER_BOUNCE_BOTH); if ( mmu->idx == 0 ) return 0; + if ( xc_hypercall_bounce_pre(xch, updates) ) + { + PERROR("flush_mmu_updates: bounce buffer failed"); + err = 1; + goto out; + } + hypercall.op = __HYPERVISOR_mmu_update; - hypercall.arg[0] = (unsigned long)mmu->updates; + hypercall.arg[0] = HYPERCALL_BUFFER_AS_ARG(updates); hypercall.arg[1] = (unsigned long)mmu->idx; hypercall.arg[2] = 0; hypercall.arg[3] = mmu->subject; - - if ( lock_pages(xch, mmu->updates, sizeof(mmu->updates)) != 0 ) - { - PERROR("flush_mmu_updates: mmu updates lock_pages failed"); - err = 1; - goto out; - } if ( do_xen_hypercall(xch, &hypercall) < 0 ) { @@ -394,7 +396,7 @@ static int flush_mmu_updates(xc_interfac mmu->idx = 0; - unlock_pages(xch, mmu->updates, sizeof(mmu->updates)); + xc_hypercall_bounce_post(xch, updates); out: return err; _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |