diff options
| -rw-r--r-- | kexec/arch/i386/kexec-x86-common.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/kexec/arch/i386/kexec-x86-common.c b/kexec/arch/i386/kexec-x86-common.c index 9303704a..ffc95a9e 100644 --- a/kexec/arch/i386/kexec-x86-common.c +++ b/kexec/arch/i386/kexec-x86-common.c @@ -48,6 +48,12 @@ #define E820_PRAM 12 #endif +/* + * The real mode IVT ends at 0x400. + * See https://wiki.osdev.org/Interrupt_Vector_Table. + */ +#define REALMODE_IVT_END 0x400 + static struct memory_range memory_range[MAX_MEMORY_RANGES]; /** @@ -360,8 +366,8 @@ int get_memory_ranges(struct memory_range **range, int *ranges, /* Don't report the interrupt table as ram */ for (i = 0; i < *ranges; i++) { if ((*range)[i].type == RANGE_RAM && - ((*range)[i].start < 0x100)) { - (*range)[i].start = 0x100; + ((*range)[i].start < REALMODE_IVT_END)) { + (*range)[i].start = REALMODE_IVT_END; break; } } |