Am Sonntag, den 04.01.2015, 12:44 +0100 schrieb Michał Masłowski: > > On the i945 based Lenovo X60, running `cbmem -l` (or any other option) > > works fine. Suspending and resuming the system, running any `cbmem` > > commands does *not* work anymore. > > Running cbmem -Vl on my X60t shows that the first run finds the table in > the first 1 MiB of memory, after suspend it doesn't and fails to mmap > memory containing RAM after the first 1 MiB.
Does somebody have a coreboot log from serial or USB for cold boot and resume, please? I am unable to get one right now, because the docking station is not here. > > [ 2834.560179] Program cbmem tried to access /dev/mem between > > f0000->1f0000. > > Kernel code prevents accesses to RAM, allowing only access to the first > 1 MiB and MMIO. > > > Do you have any idea, why this happens? Is that a Linux error? > > Using dd, grep and hexdump shows that the coreboot table entry at memory > address 0x500 gets zeroed. /proc/iomem considers that address > "reserved". Thank you for the analysis. Thanks, Paul
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