Re: [PATCH v4 17/28] KVM: arm64: nv: Add trap forwarding for MDCR_EL2
From: Jing Zhang <hidden>
Date: 2023-08-15 22:34:02
Also in:
kvm, kvmarm
Hi Marc, On Tue, Aug 15, 2023 at 11:46 AM Marc Zyngier [off-list ref] wrote:
quoted hunk ↗ jump to hunk
Describe the MDCR_EL2 register, and associate it with all the sysregs it allows to trap. Reviewed-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Marc Zyngier <maz@kernel.org> --- arch/arm64/kvm/emulate-nested.c | 268 ++++++++++++++++++++++++++++++++ 1 file changed, 268 insertions(+)diff --git a/arch/arm64/kvm/emulate-nested.c b/arch/arm64/kvm/emulate-nested.c index 975a30ef874a..241e44eeed6d 100644 --- a/arch/arm64/kvm/emulate-nested.c +++ b/arch/arm64/kvm/emulate-nested.c@@ -67,6 +67,18 @@ enum cgt_group_id { CGT_HCR_TTLBIS, CGT_HCR_TTLBOS, + CGT_MDCR_TPMCR, + CGT_MDCR_TPM, + CGT_MDCR_TDE, + CGT_MDCR_TDA, + CGT_MDCR_TDOSA, + CGT_MDCR_TDRA, + CGT_MDCR_E2PB, + CGT_MDCR_TPMS, + CGT_MDCR_TTRF, + CGT_MDCR_E2TB, + CGT_MDCR_TDCC, + /* * Anything after this point is a combination of coarse trap * controls, which must all be evaluated to decide what to do.@@ -80,6 +92,11 @@ enum cgt_group_id { CGT_HCR_TPU_TICAB, CGT_HCR_TPU_TOCU, CGT_HCR_NV1_nNV2_ENSCXT, + CGT_MDCR_TPM_TPMCR, + CGT_MDCR_TDE_TDA, + CGT_MDCR_TDE_TDOSA, + CGT_MDCR_TDE_TDRA, + CGT_MDCR_TDCC_TDE_TDA, /* * Anything after this point requires a callback evaluating a@@ -260,6 +277,72 @@ static const struct trap_bits coarse_trap_bits[] = { .mask = HCR_TTLBOS, .behaviour = BEHAVE_FORWARD_ANY, }, + [CGT_MDCR_TPMCR] = { + .index = MDCR_EL2, + .value = MDCR_EL2_TPMCR, + .mask = MDCR_EL2_TPMCR, + .behaviour = BEHAVE_FORWARD_ANY, + }, + [CGT_MDCR_TPM] = { + .index = MDCR_EL2, + .value = MDCR_EL2_TPM, + .mask = MDCR_EL2_TPM, + .behaviour = BEHAVE_FORWARD_ANY, + }, + [CGT_MDCR_TDE] = { + .index = MDCR_EL2, + .value = MDCR_EL2_TDE, + .mask = MDCR_EL2_TDE, + .behaviour = BEHAVE_FORWARD_ANY, + }, + [CGT_MDCR_TDA] = { + .index = MDCR_EL2, + .value = MDCR_EL2_TDA, + .mask = MDCR_EL2_TDA, + .behaviour = BEHAVE_FORWARD_ANY, + }, + [CGT_MDCR_TDOSA] = { + .index = MDCR_EL2, + .value = MDCR_EL2_TDOSA, + .mask = MDCR_EL2_TDOSA, + .behaviour = BEHAVE_FORWARD_ANY, + }, + [CGT_MDCR_TDRA] = { + .index = MDCR_EL2, + .value = MDCR_EL2_TDRA, + .mask = MDCR_EL2_TDRA, + .behaviour = BEHAVE_FORWARD_ANY, + }, + [CGT_MDCR_E2PB] = { + .index = MDCR_EL2, + .value = 0, + .mask = BIT(MDCR_EL2_E2PB_SHIFT), + .behaviour = BEHAVE_FORWARD_ANY, + }, + [CGT_MDCR_TPMS] = { + .index = MDCR_EL2, + .value = MDCR_EL2_TPMS, + .mask = MDCR_EL2_TPMS, + .behaviour = BEHAVE_FORWARD_ANY, + }, + [CGT_MDCR_TTRF] = { + .index = MDCR_EL2, + .value = MDCR_EL2_TTRF, + .mask = MDCR_EL2_TTRF, + .behaviour = BEHAVE_FORWARD_ANY, + }, + [CGT_MDCR_E2TB] = { + .index = MDCR_EL2, + .value = 0, + .mask = BIT(MDCR_EL2_E2TB_SHIFT), + .behaviour = BEHAVE_FORWARD_ANY, + }, + [CGT_MDCR_TDCC] = { + .index = MDCR_EL2, + .value = MDCR_EL2_TDCC, + .mask = MDCR_EL2_TDCC, + .behaviour = BEHAVE_FORWARD_ANY, + }, }; #define MCB(id, ...) \@@ -277,6 +360,11 @@ static const enum cgt_group_id *coarse_control_combo[] = { MCB(CGT_HCR_TPU_TICAB, CGT_HCR_TPU, CGT_HCR_TICAB), MCB(CGT_HCR_TPU_TOCU, CGT_HCR_TPU, CGT_HCR_TOCU), MCB(CGT_HCR_NV1_nNV2_ENSCXT, CGT_HCR_NV1_nNV2, CGT_HCR_ENSCXT), + MCB(CGT_MDCR_TPM_TPMCR, CGT_MDCR_TPM, CGT_MDCR_TPMCR), + MCB(CGT_MDCR_TDE_TDA, CGT_MDCR_TDE, CGT_MDCR_TDA), + MCB(CGT_MDCR_TDE_TDOSA, CGT_MDCR_TDE, CGT_MDCR_TDOSA), + MCB(CGT_MDCR_TDE_TDRA, CGT_MDCR_TDE, CGT_MDCR_TDRA), + MCB(CGT_MDCR_TDCC_TDE_TDA, CGT_MDCR_TDCC, CGT_MDCR_TDE, CGT_MDCR_TDA), }; typedef enum trap_behaviour (*complex_condition_check)(struct kvm_vcpu *);@@ -609,6 +697,186 @@ static const struct encoding_to_trap_config encoding_to_cgt[] __initconst = { SR_TRAP(SYS_ERXPFGF_EL1, CGT_HCR_nFIEN), SR_TRAP(SYS_ERXPFGCTL_EL1, CGT_HCR_nFIEN), SR_TRAP(SYS_ERXPFGCDN_EL1, CGT_HCR_nFIEN), + SR_TRAP(SYS_PMCR_EL0, CGT_MDCR_TPM_TPMCR), + SR_TRAP(SYS_PMCNTENSET_EL0, CGT_MDCR_TPM), + SR_TRAP(SYS_PMCNTENCLR_EL0, CGT_MDCR_TPM), + SR_TRAP(SYS_PMOVSSET_EL0, CGT_MDCR_TPM), + SR_TRAP(SYS_PMOVSCLR_EL0, CGT_MDCR_TPM), + SR_TRAP(SYS_PMCEID0_EL0, CGT_MDCR_TPM), + SR_TRAP(SYS_PMCEID1_EL0, CGT_MDCR_TPM), + SR_TRAP(SYS_PMXEVTYPER_EL0, CGT_MDCR_TPM), + SR_TRAP(SYS_PMSWINC_EL0, CGT_MDCR_TPM), + SR_TRAP(SYS_PMSELR_EL0, CGT_MDCR_TPM), + SR_TRAP(SYS_PMXEVCNTR_EL0, CGT_MDCR_TPM), + SR_TRAP(SYS_PMCCNTR_EL0, CGT_MDCR_TPM), + SR_TRAP(SYS_PMUSERENR_EL0, CGT_MDCR_TPM), + SR_TRAP(SYS_PMINTENSET_EL1, CGT_MDCR_TPM), + SR_TRAP(SYS_PMINTENCLR_EL1, CGT_MDCR_TPM), + SR_TRAP(SYS_PMMIR_EL1, CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(0), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(1), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(2), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(3), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(4), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(5), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(6), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(7), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(8), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(9), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(10), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(11), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(12), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(13), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(14), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(15), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(16), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(17), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(18), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(19), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(20), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(21), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(22), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(23), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(24), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(25), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(26), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(27), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(28), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(29), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVCNTRn_EL0(30), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(0), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(1), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(2), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(3), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(4), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(5), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(6), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(7), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(8), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(9), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(10), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(11), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(12), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(13), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(14), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(15), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(16), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(17), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(18), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(19), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(20), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(21), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(22), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(23), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(24), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(25), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(26), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(27), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(28), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(29), CGT_MDCR_TPM), + SR_TRAP(SYS_PMEVTYPERn_EL0(30), CGT_MDCR_TPM), + SR_TRAP(SYS_PMCCFILTR_EL0, CGT_MDCR_TPM), + SR_TRAP(SYS_MDCCSR_EL0, CGT_MDCR_TDCC_TDE_TDA), + SR_TRAP(SYS_MDCCINT_EL1, CGT_MDCR_TDCC_TDE_TDA), + SR_TRAP(SYS_OSDTRRX_EL1, CGT_MDCR_TDCC_TDE_TDA), + SR_TRAP(SYS_OSDTRTX_EL1, CGT_MDCR_TDCC_TDE_TDA), + SR_TRAP(SYS_DBGDTR_EL0, CGT_MDCR_TDCC_TDE_TDA), + /* + * Also covers DBGDTRRX_EL0, which has the same encoding as + * SYS_DBGDTRTX_EL0... + */ + SR_TRAP(SYS_DBGDTRTX_EL0, CGT_MDCR_TDCC_TDE_TDA), + SR_TRAP(SYS_MDSCR_EL1, CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_OSECCR_EL1, CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBVRn_EL1(0), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBVRn_EL1(1), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBVRn_EL1(2), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBVRn_EL1(3), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBVRn_EL1(4), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBVRn_EL1(5), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBVRn_EL1(6), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBVRn_EL1(7), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBVRn_EL1(8), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBVRn_EL1(9), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBVRn_EL1(10), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBVRn_EL1(11), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBVRn_EL1(12), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBVRn_EL1(13), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBVRn_EL1(14), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBVRn_EL1(15), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBCRn_EL1(0), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBCRn_EL1(1), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBCRn_EL1(2), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBCRn_EL1(3), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBCRn_EL1(4), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBCRn_EL1(5), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBCRn_EL1(6), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBCRn_EL1(7), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBCRn_EL1(8), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBCRn_EL1(9), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBCRn_EL1(10), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBCRn_EL1(11), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBCRn_EL1(12), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBCRn_EL1(13), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBCRn_EL1(14), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGBCRn_EL1(15), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWVRn_EL1(0), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWVRn_EL1(1), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWVRn_EL1(2), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWVRn_EL1(3), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWVRn_EL1(4), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWVRn_EL1(5), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWVRn_EL1(6), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWVRn_EL1(7), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWVRn_EL1(8), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWVRn_EL1(9), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWVRn_EL1(10), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWVRn_EL1(11), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWVRn_EL1(12), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWVRn_EL1(13), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWVRn_EL1(14), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWVRn_EL1(15), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWCRn_EL1(0), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWCRn_EL1(1), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWCRn_EL1(2), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWCRn_EL1(3), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWCRn_EL1(4), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWCRn_EL1(5), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWCRn_EL1(6), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWCRn_EL1(7), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWCRn_EL1(8), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWCRn_EL1(9), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWCRn_EL1(10), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWCRn_EL1(11), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWCRn_EL1(12), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWCRn_EL1(13), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGWCRn_EL1(14), CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGCLAIMSET_EL1, CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGCLAIMCLR_EL1, CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_DBGAUTHSTATUS_EL1, CGT_MDCR_TDE_TDA), + SR_TRAP(SYS_OSLAR_EL1, CGT_MDCR_TDE_TDOSA), + SR_TRAP(SYS_OSLSR_EL1, CGT_MDCR_TDE_TDOSA), + SR_TRAP(SYS_OSDLR_EL1, CGT_MDCR_TDE_TDOSA), + SR_TRAP(SYS_DBGPRCR_EL1, CGT_MDCR_TDE_TDOSA), + SR_TRAP(SYS_MDRAR_EL1, CGT_MDCR_TDE_TDRA), + SR_TRAP(SYS_PMBLIMITR_EL1, CGT_MDCR_E2PB), + SR_TRAP(SYS_PMBPTR_EL1, CGT_MDCR_E2PB), + SR_TRAP(SYS_PMBSR_EL1, CGT_MDCR_E2PB), + SR_TRAP(SYS_PMSCR_EL1, CGT_MDCR_TPMS), + SR_TRAP(SYS_PMSEVFR_EL1, CGT_MDCR_TPMS), + SR_TRAP(SYS_PMSFCR_EL1, CGT_MDCR_TPMS), + SR_TRAP(SYS_PMSICR_EL1, CGT_MDCR_TPMS), + SR_TRAP(SYS_PMSIDR_EL1, CGT_MDCR_TPMS), + SR_TRAP(SYS_PMSIRR_EL1, CGT_MDCR_TPMS), + SR_TRAP(SYS_PMSLATFR_EL1, CGT_MDCR_TPMS), + SR_TRAP(SYS_PMSNEVFR_EL1, CGT_MDCR_TPMS), + SR_TRAP(SYS_TRFCR_EL1, CGT_MDCR_TTRF), + SR_TRAP(SYS_TRBBASER_EL1, CGT_MDCR_E2TB), + SR_TRAP(SYS_TRBLIMITR_EL1, CGT_MDCR_E2TB), + SR_TRAP(SYS_TRBMAR_EL1, CGT_MDCR_E2TB), + SR_TRAP(SYS_TRBPTR_EL1, CGT_MDCR_E2TB), + SR_TRAP(SYS_TRBSR_EL1, CGT_MDCR_E2TB), + SR_TRAP(SYS_TRBTRG_EL1, CGT_MDCR_E2TB), }; static DEFINE_XARRAY(sr_forward_xa); --2.34.1
Reviewed-by: Jing Zhang <redacted> Jing _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel