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FROMGIT: KVM: arm64: Fix missing RES1 in emulation of DBGBIDR

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The AArch32 CP14 DBGDIDR has bit 15 set to RES1, which our current
emulation doesn't set. Just add the missing bit.

Reported-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
(cherry picked from commit bea7e97fef
 git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next)
Signed-off-by: Will Deacon <willdeacon@google.com>
Change-Id: I2d85bf57a967ad089a0b1cda47fb49e275379a62
Bug: 178098380
Test: atest VirtualizationHostTestCases on an EL2-enabled device
This commit is contained in:
Marc Zyngier
2020-02-15 17:02:06 +00:00
committed by Will Deacon
parent 1967d5b8cb
commit fe1ebbf9a5
1 changed files with 1 additions and 1 deletions
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2
arch/arm64/kvm/sys_regs.c
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@@ -1734,7 +1734,7 @@ static bool trap_dbgidr(struct kvm_vcpu *vcpu,
p->regval = ((((dfr >> ID_AA64DFR0_WRPS_SHIFT) & 0xf) << 28) |
(((dfr >> ID_AA64DFR0_BRPS_SHIFT) & 0xf) << 24) |
(((dfr >> ID_AA64DFR0_CTX_CMPS_SHIFT) & 0xf) << 20)
| (6 << 16) | (el3 << 14) | (el3 << 12));
| (6 << 16) | (1 << 15) | (el3 << 14) | (el3 << 12));
return true;
}
}