diff options
| -rw-r--r-- | arch/x86/xen/setup.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c index 973d29441f96..9bd3f358f3d9 100644 --- a/arch/x86/xen/setup.c +++ b/arch/x86/xen/setup.c @@ -27,6 +27,7 @@ #include <xen/interface/memory.h> #include <xen/interface/physdev.h> #include <xen/features.h> +#include <xen/hvc-console.h> #include "xen-ops.h" #include "vdso.h" #include "p2m.h" @@ -790,6 +791,17 @@ char * __init xen_memory_setup(void) sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); + /* + * Check whether the kernel itself conflicts with the target E820 map. + * Failing now is better than running into weird problems later due + * to relocating (and even reusing) pages with kernel text or data. + */ + if (xen_is_e820_reserved(__pa_symbol(_text), + __pa_symbol(__bss_stop) - __pa_symbol(_text))) { + xen_raw_console_write("Xen hypervisor allocated kernel memory conflicts with E820 map\n"); + BUG(); + } + xen_reserve_xen_mfnlist(); /* |