* Yinghai Lu yinghai@kernel.org wrote:
Impact: fix boot with mptable above max_low_mapped
try to use early_ioremap it.
v2: also get the exact size for reserve_bootmem in case we got big size than 4k
Signed-off-by: Yinghai Lu yinghai@kernel.org Reported-and-tested-by: Kevin O'Connor kevin@koconnor.net
arch/x86/kernel/mpparse.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-)
Index: linux-2.6/arch/x86/kernel/mpparse.c
--- linux-2.6.orig/arch/x86/kernel/mpparse.c +++ linux-2.6/arch/x86/kernel/mpparse.c @@ -611,12 +611,20 @@ static void __init __get_smp_config(unsi construct_default_ISA_mptable(mpf->feature1);
} else if (mpf->physptr) {
struct mpc_table *mpc;unsigned long size;mpc = early_ioremap(mpf->physptr, PAGE_SIZE);size = mpc->length;apic_printk(APIC_VERBOSE, " mpc: %lx-%lx\n", (unsigned long)mpf->physptr,mpf->physptr + size);early_iounmap(mpc, PAGE_SIZE);mpc = early_ioremap(mpf->physptr, size);
no objections, but this bit of __get_smp_config() needs to be done cleaner - the whole mpf->physptr != 0 bit should probably go into a helper function.
Ingo