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arm64: KVM: report configured SRE value to 32-bit world 

After commit b34f2bc ("arm64: KVM: Make ICC_SRE_EL1 access return the
configured SRE value") we report SRE value to 64-bit guest, but 32-bit
one still handled as RAZ/WI what leads to funny promise we do not keep:

"GICv3: GIC: unable to set SRE (disabled at EL2), panic ahead"

Instead, return the actual value of the ICC_SRE_EL1 register that the
guest should see.

 [ Tweaked commit message - Christoffer ]

Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
hifive-unleashed-5.1
Vladimir Murzin 2016-08-10 10:49:43 +01:00 committed by Christoffer Dall
parent b63bebe235
commit f7f6f2d94f
1 changed files with 1 additions and 1 deletions
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arch/arm64/kvm/sys_regs.c
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@ -1352,7 +1352,7 @@ static const struct sys_reg_desc cp15_regs[] = {
{ Op1( 0), CRn(10), CRm( 3), Op2( 1), access_vm_reg, NULL, c10_AMAIR1 },
/* ICC_SRE */
{ Op1( 0), CRn(12), CRm(12), Op2( 5), trap_raz_wi },
{ Op1( 0), CRn(12), CRm(12), Op2( 5), access_gic_sre },
{ Op1( 0), CRn(13), CRm( 0), Op2( 1), access_vm_reg, NULL, c13_CID },