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x86_64: re-arrange user and kernel GDT entries for compatibility with syscall instruction

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max 🍓
2026-02-19 18:59:37 +00:00
parent f89e3cb12c
commit 44c2904c11
2 changed files with 5 additions and 4 deletions
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4
arch/x86_64/gdt.c
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@@ -28,11 +28,11 @@ int gdt_init(struct gdt *gdt, struct gdt_ptr *gdtp)
GDT_F_64BIT);
init_entry(
&gdt->g_entries[3],
GDT_A_PRESENT | GDT_A_USER | GDT_A_CODEREAD | GDT_A_CODE,
GDT_A_PRESENT | GDT_A_USER | GDT_A_DATAWRITE | GDT_A_DATA,
GDT_F_64BIT);
init_entry(
&gdt->g_entries[4],
GDT_A_PRESENT | GDT_A_USER | GDT_A_DATAWRITE | GDT_A_DATA,
GDT_A_PRESENT | GDT_A_USER | GDT_A_CODEREAD | GDT_A_CODE,
GDT_F_64BIT);
gdtp->g_ptr = (uint64_t)gdt;