提交 c07e1b8a 编写于 作者: N Nicholas Piggin 提交者: Michael Ellerman

powerpc/64s: Fix OPAL_CALL non-maskable interrupt reentrancy

OPAL_CALL uses SRR[01] with MSR_RI=1, which gets corrupted if there
is an interleaving system reset or machine check interrupt.

Use HSRR[01] instead, which does not require MSR_RI=0.
Signed-off-by: NNicholas Piggin <npiggin@gmail.com>
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
上级 f1fe5252
......@@ -99,10 +99,10 @@ opal_return:
lwz r4,8(r1);
ld r5,PPC_LR_STKOFF(r1);
ld r6,PACASAVEDMSR(r13);
mtspr SPRN_SRR0,r5;
mtspr SPRN_SRR1,r6;
mtcr r4;
rfid
mtspr SPRN_HSRR0,r5;
mtspr SPRN_HSRR1,r6;
hrfid
opal_real_call:
mfcr r11
......
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