On 2021-01-12 11:59, Suzuki K Poulose wrote:
On 1/12/21 11:50 AM, Marc Zyngier wrote:
Hi Suzuki,
On 2021-01-12 09:17, Suzuki K Poulose wrote:
Hi Marc,
On 1/11/21 7:48 PM, Marc Zyngier wrote:
[...]
diff --git a/arch/arm64/kernel/cpufeature.c
b/arch/arm64/kernel/cpufeature.c
index
On 1/12/21 11:51 AM, Marc Zyngier wrote:
On 2021-01-12 11:50, Marc Zyngier wrote:
Hi Suzuki,
On 2021-01-12 09:17, Suzuki K Poulose wrote:
Hi Marc,
On 1/11/21 7:48 PM, Marc Zyngier wrote:
[...]
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index
On 1/12/21 11:50 AM, Marc Zyngier wrote:
Hi Suzuki,
On 2021-01-12 09:17, Suzuki K Poulose wrote:
Hi Marc,
On 1/11/21 7:48 PM, Marc Zyngier wrote:
[...]
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index 894af60b9669..00d99e593b65 100644
---
On 2021-01-12 11:50, Marc Zyngier wrote:
Hi Suzuki,
On 2021-01-12 09:17, Suzuki K Poulose wrote:
Hi Marc,
On 1/11/21 7:48 PM, Marc Zyngier wrote:
[...]
diff --git a/arch/arm64/kernel/cpufeature.c
b/arch/arm64/kernel/cpufeature.c
index 894af60b9669..00d99e593b65 100644
---
Hi Suzuki,
On 2021-01-12 09:17, Suzuki K Poulose wrote:
Hi Marc,
On 1/11/21 7:48 PM, Marc Zyngier wrote:
[...]
diff --git a/arch/arm64/kernel/cpufeature.c
b/arch/arm64/kernel/cpufeature.c
index 894af60b9669..00d99e593b65 100644
--- a/arch/arm64/kernel/cpufeature.c
+++
Hi Marc,
On 1/11/21 7:48 PM, Marc Zyngier wrote:
Hi Catalin,
On 2021-01-11 18:41, Catalin Marinas wrote:
Hi Marc,
On Mon, Jan 11, 2021 at 01:27:59PM +, Marc Zyngier wrote:
Add a facility to globally override a feature, no matter what
the HW says. Yes, this is dangerous.
Yeah, it's
Hi Catalin,
On 1/11/2021 10:41 AM, Catalin Marinas wrote:
Hi Marc,
On Mon, Jan 11, 2021 at 01:27:59PM +, Marc Zyngier wrote:
Add a facility to globally override a feature, no matter what
the HW says. Yes, this is dangerous.
Yeah, it's dangerous. We can make it less so if we only allow
Hi Catalin,
On 2021-01-11 18:41, Catalin Marinas wrote:
Hi Marc,
On Mon, Jan 11, 2021 at 01:27:59PM +, Marc Zyngier wrote:
Add a facility to globally override a feature, no matter what
the HW says. Yes, this is dangerous.
Yeah, it's dangerous. We can make it less so if we only allow
Hi Marc,
On Mon, Jan 11, 2021 at 01:27:59PM +, Marc Zyngier wrote:
> Add a facility to globally override a feature, no matter what
> the HW says. Yes, this is dangerous.
Yeah, it's dangerous. We can make it less so if we only allow safe
values (e.g. lower if FTR_UNSIGNED).
> diff --git
Add a facility to globally override a feature, no matter what
the HW says. Yes, this is dangerous.
Nothing uses this yet, so we are pretty safe. For now.
Signed-off-by: Marc Zyngier
---
arch/arm64/include/asm/cpufeature.h | 2 ++
arch/arm64/kernel/cpufeature.c | 26
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