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Set the io bitmap pointer beyond the TSS limit

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svn path=/trunk/; revision=1738
This commit is contained in:
David Welch 2001-03-26 23:01:39 +00:00
parent 988ec8cb30
commit 634bb6b997
3 changed files with 4 additions and 4 deletions
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2
reactos/include/ddk/i386/tss.h
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@ -50,7 +50,7 @@ typedef struct _KTSS
USHORT Trap;
USHORT IoMapBase;
UCHAR IoBitmap[1];
} KTSS;
} KTSS __attribute__((packed));
#endif /* not __ASM__ */

2
reactos/ntoskrnl/ke/i386/bios.c
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@ -72,7 +72,7 @@ Ke386CallBios(UCHAR Int, PKV86M_REGISTERS Regs)
Regs->RecoveryInstruction[2] = 0x90; /* nop */
Regs->RecoveryInstruction[3] = 0x90; /* nop */
Regs->Flags = KV86M_EMULATE_CLI_STI | KV86M_ALLOW_IO_PORT_ACCESS;
Regs->Vif = 0;
Regs->Vif = 1;
Regs->PStatus = &Status;
/*

4
reactos/ntoskrnl/ke/i386/thread.c
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@ -195,8 +195,8 @@ HalInitFirstTask(PETHREAD thread)
*/
KiTss.Esp0 = (ULONG)&init_stack_top;
KiTss.Ss0 = KERNEL_DS;
KiTss.IoMapBase = FIELD_OFFSET(KTSS, IoBitmap);
//KiTss.IoMapBase = 0xFFFF;
// KiTss.IoMapBase = FIELD_OFFSET(KTSS, IoBitmap);
KiTss.IoMapBase = 0xFFFF; /* No i/o bitmap */
KiTss.IoBitmap[0] = 0xFF;
KiTss.Ldt = LDT_SELECTOR;