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

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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: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Nicholas Piggin 2017-05-01 22:01:10 +10:00 • committed by Michael Ellerman

parent f1fe525201

commit c07e1b8a27

1 changed files with 3 additions and 3 deletions

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arch/powerpc/platforms/powernv/opal-wrappers.S

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