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hw/intc/arm_gicv3_kvm: Add ICC_SRE_EL1 register to vmstate

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To Save and Restore ICC_SRE_EL1 register introduce vmstate
subsection and load only if non-zero.
Also initialize icc_sre_el1 with to 0x7 in pre_load
function.

Signed-off-by: Vijaya Kumar K <Vijaya.Kumar@cavium.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Message-id: 1487850673-26455-3-git-send-email-vijay.kilari@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Vijaya Kumar K 2017-02-23 17:21:10 +05:30 committed by Peter Maydell
parent 3a5eb5b4a9
commit 6692aac411
2 changed files with 37 additions and 0 deletions
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36
hw/intc/arm_gicv3_common.c
View file

@ -70,6 +70,38 @@ static const VMStateDescription vmstate_gicv3_cpu_virt = {
}
};
static int icc_sre_el1_reg_pre_load(void *opaque)
{
GICv3CPUState *cs = opaque;
/*
* If the sre_el1 subsection is not transferred this
* means SRE_EL1 is 0x7 (which might not be the same as
* our reset value).
*/
cs->icc_sre_el1 = 0x7;
return 0;
}
static bool icc_sre_el1_reg_needed(void *opaque)
{
GICv3CPUState *cs = opaque;
return cs->icc_sre_el1 != 7;
}
const VMStateDescription vmstate_gicv3_cpu_sre_el1 = {
.name = "arm_gicv3_cpu/sre_el1",
.version_id = 1,
.minimum_version_id = 1,
.pre_load = icc_sre_el1_reg_pre_load,
.needed = icc_sre_el1_reg_needed,
.fields = (VMStateField[]) {
VMSTATE_UINT64(icc_sre_el1, GICv3CPUState),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_gicv3_cpu = {
.name = "arm_gicv3_cpu",
.version_id = 1,
@ -100,6 +132,10 @@ static const VMStateDescription vmstate_gicv3_cpu = {
.subsections = (const VMStateDescription * []) {
&vmstate_gicv3_cpu_virt,
NULL
},
.subsections = (const VMStateDescription * []) {
&vmstate_gicv3_cpu_sre_el1,
NULL
}
};

1
include/hw/intc/arm_gicv3_common.h
View file

@ -172,6 +172,7 @@ struct GICv3CPUState {
uint8_t gicr_ipriorityr[GIC_INTERNAL];
/* CPU interface */
uint64_t icc_sre_el1;
uint64_t icc_ctlr_el1[2];
uint64_t icc_pmr_el1;
uint64_t icc_bpr[3];