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| author | Jérémy Fanguède <j.fanguede@virtualopensystems.com> | 2018-02-08 12:57:19 +0100 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2018-02-26 10:48:02 +0100 |
| commit | eac137b4a9d66d1ef2f1963b7c1dd6ab5ca57d4f (patch) | |
| tree | 13aebc430e865c289abc1cdcecb47bb7ba1c180a /arch/arm64/kvm | |
| parent | 005781be127fced5f2dd83134c3a99b2bfc7151e (diff) | |
| download | linux-eac137b4a9d66d1ef2f1963b7c1dd6ab5ca57d4f.tar.bz2 | |
KVM: arm64: Enable the EL1 physical timer for AArch32 guests
Some 32bits guest OS can use the CNTP timer, however KVM does not
handle the accesses, injecting a fault instead.
Use the proper handlers to emulate the EL1 Physical Timer (CNTP)
register accesses of AArch32 guests.
Signed-off-by: Jérémy Fanguède <j.fanguede@virtualopensystems.com>
Signed-off-by: Alvise Rigo <a.rigo@virtualopensystems.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'arch/arm64/kvm')
| -rw-r--r-- | arch/arm64/kvm/sys_regs.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 55982b565eb2..6feb4a2215cb 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -1565,6 +1565,11 @@ static const struct sys_reg_desc cp15_regs[] = { { Op1( 0), CRn(13), CRm( 0), Op2( 1), access_vm_reg, NULL, c13_CID }, + /* CNTP_TVAL */ + { Op1( 0), CRn(14), CRm( 2), Op2( 0), access_cntp_tval }, + /* CNTP_CTL */ + { Op1( 0), CRn(14), CRm( 2), Op2( 1), access_cntp_ctl }, + /* PMEVCNTRn */ PMU_PMEVCNTR(0), PMU_PMEVCNTR(1), @@ -1638,6 +1643,7 @@ static const struct sys_reg_desc cp15_64_regs[] = { { Op1( 0), CRn( 0), CRm( 9), Op2( 0), access_pmu_evcntr }, { Op1( 0), CRn( 0), CRm(12), Op2( 0), access_gic_sgi }, { Op1( 1), CRn( 0), CRm( 2), Op2( 0), access_vm_reg, NULL, c2_TTBR1 }, + { Op1( 2), CRn( 0), CRm(14), Op2( 0), access_cntp_cval }, }; /* Target specific emulation tables */ |