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LOG_INFO is not used until the initialization fs/gs

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because LOG_INFO based on the gs register
This commit is contained in:
Stefan Lankes 2017-02-18 00:26:57 +01:00
parent 1de3d29248
commit 202de2f967
1 changed files with 8 additions and 8 deletions
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16
arch/x86/kernel/processor.c
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@ -416,7 +416,7 @@ int cpu_detection(void) {
first_time = 1;
cpuid(0, &level, &b, &c, &d);
LOG_INFO("cpuid level %d\n", level);
kprintf("cpuid level %d\n", level);
a = b = c = d = 0;
cpuid(1, &a, &b, &cpu_info.feature2, &cpu_info.feature1);
@ -438,7 +438,7 @@ int cpu_detection(void) {
}
if (first_time) {
LOG_INFO("Paging features: %s%s%s%s%s%s%s%s\n",
kprintf("Paging features: %s%s%s%s%s%s%s%s\n",
(cpu_info.feature1 & CPU_FEATURE_PSE) ? "PSE (2/4Mb) " : "",
(cpu_info.feature1 & CPU_FEATURE_PAE) ? "PAE " : "",
(cpu_info.feature1 & CPU_FEATURE_PGE) ? "PGE " : "",
@ -448,10 +448,10 @@ int cpu_detection(void) {
(cpu_info.feature3 & CPU_FEATURE_1GBHP) ? "PSE (1Gb) " : "",
(cpu_info.feature3 & CPU_FEATURE_LM) ? "LM" : "");
LOG_INFO("Physical adress-width: %u bits\n", cpu_info.addr_width & 0xff);
LOG_INFO("Linear adress-width: %u bits\n", (cpu_info.addr_width >> 8) & 0xff);
LOG_INFO("Sysenter instruction: %s\n", (cpu_info.feature1 & CPU_FEATURE_SEP) ? "available" : "unavailable");
LOG_INFO("Syscall instruction: %s\n", (cpu_info.feature3 & CPU_FEATURE_SYSCALL) ? "available" : "unavailable");
kprintf("Physical adress-width: %u bits\n", cpu_info.addr_width & 0xff);
kprintf("Linear adress-width: %u bits\n", (cpu_info.addr_width >> 8) & 0xff);
kprintf("Sysenter instruction: %s\n", (cpu_info.feature1 & CPU_FEATURE_SEP) ? "available" : "unavailable");
kprintf("Syscall instruction: %s\n", (cpu_info.feature3 & CPU_FEATURE_SYSCALL) ? "available" : "unavailable");
}
//TODO: add check for SMEP and SMAP
@ -509,7 +509,7 @@ int cpu_detection(void) {
xcr0 |= 0xE0;
xsetbv(0, xcr0);
LOG_INFO("Set XCR0 to 0x%llx\n", xgetbv(0));
kprintf("Set XCR0 to 0x%llx\n", xgetbv(0));
}
// libos => currently no support of syscalls
@ -520,7 +520,7 @@ int cpu_detection(void) {
wrmsr(MSR_LSTAR, (size_t) &isrsyscall);
// clear IF flag during an interrupt
wrmsr(MSR_SYSCALL_MASK, EFLAGS_TF|EFLAGS_DF|EFLAGS_IF|EFLAGS_AC|EFLAGS_NT);
} else LOG_INFO("Processor doesn't support syscalls\n");
} else kprintf("Processor doesn't support syscalls\n");
#endif
if (has_nx())