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Groups > linux.kernel > #1242578
| From | Marc Zyngier <marc.zyngier@arm.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 0/5] arm64: Allow booting with GICv3 in GICv2 mode |
| Date | 2015-10-08 18:10 +0200 |
| Message-ID | <qhlVw-8s5-27@gated-at.bofh.it> (permalink) |
| References | <qfbxf-od-5@gated-at.bofh.it> <qhlLP-81t-7@gated-at.bofh.it> |
| Organization | ARM Ltd |
On 08/10/15 16:56, Catalin Marinas wrote: > On Fri, Oct 02, 2015 at 05:37:49PM +0100, Marc Zyngier wrote: >> Recent evolutions of the ARM Trusted Firmware have outlined issues >> when the system is equipped with a GICv3 interrupt controller, but the >> firmware has decided to restrict it to GICv2 compatibility mode. >> >> In this mode, system registers cannot be enabled, and the firmware is >> expected to pass a GICv2 description (DT or ACPI tables). >> >> This series makes sure that system register access is checked at EL2 >> setup time and when the feature detection is performed. Additionally, >> the GICv2 driver checks that system registers are disabled, and warns >> if they are enabled. >> >> The booting requirements are also updated to make the above explicit. >> >> Marc Zyngier (5): >> arm64: el2_setup: Make sure ICC_SRE_EL2.SRE sticks before using GICv3 >> sysregs >> irqchip/gic-v3: Make gic_enable_sre an inline function >> arm64: cpufeatures: Check ICC_EL1_SRE.SRE before enabling >> ARM64_HAS_SYSREG_GIC_CPUIF >> irqchip/gic: Warn if GICv3 system registers are enabled >> arm64: Update booting requirements for GICv3 in GICv2 mode >> >> Documentation/arm64/booting.txt | 11 ++++++++++- >> arch/arm64/kernel/cpufeature.c | 19 ++++++++++++++++++- >> arch/arm64/kernel/head.S | 2 ++ >> drivers/irqchip/irq-gic-v3.c | 32 +++++++++----------------------- >> drivers/irqchip/irq-gic.c | 15 +++++++++++++++ >> include/linux/irqchip/arm-gic-v3.h | 16 ++++++++++++++++ >> 6 files changed, 70 insertions(+), 25 deletions(-) > > Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> > > How do you plan to merge these patches? I'm fine for them to go via the > irqchip maintainers since they are all GIC related. I guess we can direct this via tip if Thomas is OK with it. Thanks, M. -- Jazz is not dead. It just smells funny... -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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Re: [PATCH 0/5] arm64: Allow booting with GICv3 in GICv2 mode Catalin Marinas <catalin.marinas@arm.com> - 2015-10-08 18:00 +0200 Re: [PATCH 0/5] arm64: Allow booting with GICv3 in GICv2 mode Marc Zyngier <marc.zyngier@arm.com> - 2015-10-08 18:10 +0200
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