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tco: do not generate an NMI

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This behavior is not indicated in the datasheet and can confuse the OS.
The TCO can trap NMIs from SERR# or IOCHK# and convert them to SMIs; but
any other TCO event is either delivered as an SMI or completely disabled.

Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2017-04-05 10:11:36 +02:00
parent 87cc4c6102
commit 8c9f42f3cf
3 changed files with 0 additions and 8 deletions
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2
hw/acpi/tco.c
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@ -75,8 +75,6 @@ static void tco_timer_expired(void *opaque)
if (pm->smi_en & ICH9_PMIO_SMI_EN_TCO_EN) {
ich9_generate_smi();
} else {
ich9_generate_nmi();
}
tr->tco.rld = tr->tco.tmr;
tco_timer_reload(tr);

5
hw/isa/lpc_ich9.c
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@ -312,11 +312,6 @@ void ich9_generate_smi(void)
cpu_interrupt(first_cpu, CPU_INTERRUPT_SMI);
}
void ich9_generate_nmi(void)
{
cpu_interrupt(first_cpu, CPU_INTERRUPT_NMI);
}
static int ich9_lpc_sci_irq(ICH9LPCState *lpc)
{
switch (lpc->d.config[ICH9_LPC_ACPI_CTRL] &

1
include/hw/i386/ich9.h
View File

@ -21,7 +21,6 @@ void ich9_lpc_pm_init(PCIDevice *pci_lpc, bool smm_enabled);
I2CBus *ich9_smb_init(PCIBus *bus, int devfn, uint32_t smb_io_base);
void ich9_generate_smi(void);
void ich9_generate_nmi(void);
#define ICH9_CC_SIZE (16 * 1024) /* 16KB. Chipset configuration registers */