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[NTOS:KE] Fix usage of KTHREAD::SwapBusy

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This commit is contained in:
Timo Kreuzer 2021-06-07 13:57:32 +02:00
parent a011d19ed2
commit f4d47faeb7
3 changed files with 12 additions and 0 deletions
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8
ntoskrnl/ke/amd64/ctxswitch.S
View file

@ -149,6 +149,14 @@ PUBLIC KiThreadStartup
.allocstack (6 * 8)
.endprolog
/* Wait for SwapBusy */
.SwapBusySet:
cmp byte ptr [r8 + ThSwapBusy], 0
je .SwapBusyClear
pause
jmp .SwapBusySet
.SwapBusyClear:
/* Save WaitIrql as KSWITCH_FRAME::ApcBypass */
mov [rsp + SwApcBypass], cl

3
ntoskrnl/ke/amd64/thrdini.c
View file

@ -184,6 +184,9 @@ KiSwapContextResume(
0);
}
/* Old thread os no longer busy */
OldThread->SwapBusy = FALSE;
/* Kernel APCs may be pending */
if (NewThread->ApcState.KernelApcPending)
{

1
sdk/include/asm/ksx.template.h
View file

@ -762,6 +762,7 @@ OFFSET(ThSystemCallNumber, KTHREAD, SystemCallNumber),
OFFSET(ThTrapFrame, KTHREAD, TrapFrame),
OFFSET(ThApcState, KTHREAD, ApcState),
OFFSET(ThPriority, KTHREAD, Priority), // obsolete
OFFSET(ThSwapBusy, KTHREAD, SwapBusy),
OFFSET(ThContextSwitches, KTHREAD, ContextSwitches),
OFFSET(ThState, KTHREAD, State),
OFFSET(ThProcess, KTHREAD, Process), // thProcess in native headers