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| author | Marc Zyngier <marc.zyngier@arm.com> | 2016-05-25 15:26:37 +0100 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2016-05-31 16:12:16 +0200 |
| commit | b34f2bcbf59fe2d27c37d6553c33611754677103 (patch) | |
| tree | 58c1b3b69e484ef9a73c50852d4b2d560db3edb7 /arch | |
| parent | 637d122baac7ff386c8e96df38ac88cee1551db9 (diff) | |
| download | linux-b34f2bcbf59fe2d27c37d6553c33611754677103.tar.bz2 | |
arm64: KVM: Make ICC_SRE_EL1 access return the configured SRE value
When we trap ICC_SRE_EL1, we handle it as RAZ/WI. It would be
more correct to actual make it RO, and return the configured
value when read.
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/kvm/sys_regs.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 7bbe3ff02602..a57d650f552c 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -134,6 +134,17 @@ static bool access_gic_sgi(struct kvm_vcpu *vcpu, return true; } +static bool access_gic_sre(struct kvm_vcpu *vcpu, + struct sys_reg_params *p, + const struct sys_reg_desc *r) +{ + if (p->is_write) + return ignore_write(vcpu, p); + + p->regval = vcpu->arch.vgic_cpu.vgic_v3.vgic_sre; + return true; +} + static bool trap_raz_wi(struct kvm_vcpu *vcpu, struct sys_reg_params *p, const struct sys_reg_desc *r) @@ -958,7 +969,7 @@ static const struct sys_reg_desc sys_reg_descs[] = { access_gic_sgi }, /* ICC_SRE_EL1 */ { Op0(0b11), Op1(0b000), CRn(0b1100), CRm(0b1100), Op2(0b101), - trap_raz_wi }, + access_gic_sre }, /* CONTEXTIDR_EL1 */ { Op0(0b11), Op1(0b000), CRn(0b1101), CRm(0b0000), Op2(0b001), |