diff options
Diffstat (limited to 'src/cpu/x86')
| -rw-r--r-- | src/cpu/x86/mtrr/mtrr.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/cpu/x86/mtrr/mtrr.c b/src/cpu/x86/mtrr/mtrr.c index 23473dfd3d..249d631875 100644 --- a/src/cpu/x86/mtrr/mtrr.c +++ b/src/cpu/x86/mtrr/mtrr.c @@ -36,6 +36,7 @@ #include <arch/acpi.h> #include <memrange.h> #include <cpu/amd/mtrr.h> +#include <assert.h> #if IS_ENABLED(CONFIG_X86_AMD_FIXED_MTRRS) #define MTRR_FIXED_WRBACK_BITS (MTRR_READ_MEM | MTRR_WRITE_MEM) #else @@ -331,6 +332,7 @@ static void commit_fixed_mtrrs(void) desc = &fixed_mtrr_desc[i]; num_ranges = (desc->end - desc->begin) / desc->step; + ASSERT(num_ranges > 0); for (j = 0; j < num_ranges; j += RANGES_PER_FIXED_MTRR) { msr_index[msr_num] = desc->msr_index_base + (j / RANGES_PER_FIXED_MTRR); |