[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 18/19] xen: arm: Annotate registers trapped when CNTHCTL_EL2.EL1PCEN == 0
Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx> --- xen/arch/arm/traps.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/xen/arch/arm/traps.c b/xen/arch/arm/traps.c index 1c9cf21..cc5b8dd 100644 --- a/xen/arch/arm/traps.c +++ b/xen/arch/arm/traps.c @@ -1642,6 +1642,12 @@ static void do_cp15_32(struct cpu_user_regs *regs, switch ( hsr.bits & HSR_CP32_REGS_MASK ) { + /* + * !CNTHCTL_EL2.EL1PCEN / !CNTHCTL.PL1PCEN + * + * ARMv7 (DDI 0406C.b): B4.1.22 + * ARMv8 (DDI 0487A.d): D1-1510 Table D1-60 + */ case HSR_CPREG32(CNTP_CTL): case HSR_CPREG32(CNTP_TVAL): if ( !vtimer_emulate(regs, hsr) ) @@ -1757,6 +1763,12 @@ static void do_cp15_64(struct cpu_user_regs *regs, switch ( hsr.bits & HSR_CP64_REGS_MASK ) { + /* + * !CNTHCTL_EL2.EL1PCEN / !CNTHCTL.PL1PCEN + * + * ARMv7 (DDI 0406C.b): B4.1.22 + * ARMv8 (DDI 0487A.d): D1-1510 Table D1-60 + */ case HSR_CPREG64(CNTP_CVAL): if ( !vtimer_emulate(regs, hsr) ) return inject_undef_exception(regs, hsr); @@ -2120,14 +2132,18 @@ static void do_sysreg(struct cpu_user_regs *regs, */ return handle_raz_wi(regs, x, hsr.sysreg.read, hsr, 1); - /* Write only, Write ignore registers: */ - + /* + * !CNTHCTL_EL2.EL1PCEN + * + * ARMv8 (DDI 0487A.d): D1-1510 Table D1-60 + */ case HSR_SYSREG_CNTP_CTL_EL0: case HSR_SYSREG_CNTP_TVAL_EL0: case HSR_SYSREG_CNTP_CVAL_EL0: if ( !vtimer_emulate(regs, hsr) ) return inject_undef_exception(regs, hsr); break; + case HSR_SYSREG_ICC_SGI1R_EL1: if ( !vgic_emulate(regs, hsr) ) { -- 1.7.10.4 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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