Max Wash
dbe117135b
the %gs base address is now always set to the current cpu block while in kernel-mode, and is switched back to the userspace %gs base when returning to user-mode.
22 lines
326 B
C
22 lines
326 B
C
#ifndef ARCH_MSR_H_
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#define ARCH_MSR_H_
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#include <stdint.h>
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#define MSR_GS_BASE 0xC0000101
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#define MSR_KERNEL_GS_BASE 0xC0000102
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* defined in cpu_ctrl.S */
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extern uint64_t rdmsr(uint32_t id);
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extern void wrmsr(uint32_t id, uint64_t val);
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#ifdef __cplusplus
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}
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#endif
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#endif
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