grub/grub-core/commands/i386
Jesús Diéguez Fernández a728cd4d1d msr: Add new MSR modules (rdmsr/wrmsr)
In order to be able to read from and write to model-specific registers,
two new modules are added. They are i386 specific, as the cpuid module.

rdmsr module registers the command rdmsr that allows reading from a MSR.
wrmsr module registers the command wrmsr that allows writing to a MSR.

wrmsr module is disabled if UEFI secure boot is enabled.

Please note that on SMP systems, interacting with a MSR that has a scope
per hardware thread, implies that the value only applies to the
particular cpu/core/thread that ran the command.

Also, if you specify a reserved or unimplemented MSR address, it will
cause a general protection exception (which is not currently being
handled) and the system will reboot.

Signed-off-by: Jesús Diéguez Fernández <jesusdf@gmail.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
2020-09-21 16:52:54 -04:00
..
coreboot coreboot: Split parts that are platform-independent. 2020-09-21 11:32:45 -04:00
pc verifiers: File type for fine-grained signature-verification controlling 2020-09-21 13:29:05 -04:00
cmosdump.c Clarify several translatable messages. 2013-12-21 01:41:16 +01:00
cmostest.c Fix warnings when compiling with -O3 2016-02-17 17:56:41 +01:00
cpuid.c Support cpuid --pae. 2013-12-17 23:40:49 +01:00
rdmsr.c msr: Add new MSR modules (rdmsr/wrmsr) 2020-09-21 16:52:54 -04:00
wrmsr.c msr: Add new MSR modules (rdmsr/wrmsr) 2020-09-21 16:52:54 -04:00