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
diff --git a/util/msrtool/linux.c b/util/msrtool/linux.c
index efd3087..ac94d80 100644
--- a/util/msrtool/linux.c
+++ b/util/msrtool/linux.c
@@ -76,13 +76,16 @@
}
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;
}