diff options
| author | Peter Stuge <peter@stuge.se> | 2009-01-26 17:03:05 +0000 |
|---|---|---|
| committer | Peter Stuge <peter@stuge.se> | 2009-01-26 17:03:05 +0000 |
| commit | c1d6ed9a21bc96b0d4eb778b78c65b304e5e46f9 (patch) | |
| tree | ff3bfd3373e52dcb5c5dfa7eab66656e78847ea7 /util/msrtool | |
| parent | a8866243d89f5a6da3fe1558b6ac469130275d97 (diff) | |
msrtool: Linux /dev/cpu/*/msr returns the low 32 bits before the high 32 bits.
Thanks to Mart for spotting this!
Signed-off-by: Peter Stuge <peter@stuge.se>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3920 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'util/msrtool')
| -rw-r--r-- | util/msrtool/linux.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/util/msrtool/linux.c b/util/msrtool/linux.c index efd3087061..ac94d803f9 100644 --- a/util/msrtool/linux.c +++ b/util/msrtool/linux.c @@ -76,13 +76,16 @@ int linux_close(uint8_t cpu) { } int linux_rdmsr(uint8_t cpu, uint32_t addr, struct msr *val) { + struct msr tmp; if (lseek(msr_fd[cpu], addr, SEEK_SET) == -1) { SYSERROR(lseek, addr); return 0; } - if (read(msr_fd[cpu], val, 8) != 8) { + if (read(msr_fd[cpu], &tmp, 8) != 8) { SYSERROR(read, addr); return 0; } + val->hi = tmp.lo; + val->lo = tmp.hi; return 1; } |