From 2e68ac5f9753eaf889ac524cc7ee1dd117815ffb Mon Sep 17 00:00:00 2001 From: "kfraser@localhost.localdomain" Date: Fri, 19 Jan 2007 14:41:17 +0000 Subject: [PATCH] [LIBXC] Handle trace-buffer cpumap endianness. Original patch from Jimi Xenidis Signed-off-by: Keir Fraser --- tools/libxc/xc_tbuf.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/tools/libxc/xc_tbuf.c b/tools/libxc/xc_tbuf.c index 920c5b5abd..266732608a 100644 --- a/tools/libxc/xc_tbuf.c +++ b/tools/libxc/xc_tbuf.c @@ -96,15 +96,19 @@ int xc_tbuf_set_cpu_mask(int xc_handle, uint32_t mask) { DECLARE_SYSCTL; int ret = -1; + uint64_t mask64 = mask; + uint8_t bytemap[sizeof(mask64)]; sysctl.cmd = XEN_SYSCTL_tbuf_op; sysctl.interface_version = XEN_SYSCTL_INTERFACE_VERSION; sysctl.u.tbuf_op.cmd = XEN_SYSCTL_TBUFOP_set_cpu_mask; - set_xen_guest_handle(sysctl.u.tbuf_op.cpu_mask.bitmap, (uint8_t *)&mask); - sysctl.u.tbuf_op.cpu_mask.nr_cpus = sizeof(mask) * 8; + bitmap_64_to_byte(bytemap, &mask64, sizeof (mask64)); - if ( lock_pages(&mask, sizeof(mask)) != 0 ) + set_xen_guest_handle(sysctl.u.tbuf_op.cpu_mask.bitmap, bytemap); + sysctl.u.tbuf_op.cpu_mask.nr_cpus = sizeof(bytemap) * 8; + + if ( lock_pages(&bytemap, sizeof(bytemap)) != 0 ) { PERROR("Could not lock memory for Xen hypercall"); goto out; @@ -112,7 +116,7 @@ int xc_tbuf_set_cpu_mask(int xc_handle, uint32_t mask) ret = do_sysctl(xc_handle, &sysctl); - unlock_pages(&mask, sizeof(mask)); + unlock_pages(&bytemap, sizeof(bytemap)); out: return ret; -- 2.30.2