On 26/06/2020 16:07, Ross Lagerwall wrote:
> On 2020-06-26 15:46, Andrew Cooper wrote:
>> On 26/06/2020 15:26, Jan Beulich wrote:
>>> On 26.06.2020 15:59, Ross Lagerwall wrote:
On 2020-06-26 13:24, Andrew Cooper wrote:
> @@ -56,18 +57,48 @@ int arch_livepatch_safety_check(void)
>
On 2020-06-26 15:46, Andrew Cooper wrote:
> On 26/06/2020 15:26, Jan Beulich wrote:
>> On 26.06.2020 15:59, Ross Lagerwall wrote:
>>> On 2020-06-26 13:24, Andrew Cooper wrote:
@@ -56,18 +57,48 @@ int arch_livepatch_safety_check(void)
return -EBUSY;
}
-int
On 26.06.2020 16:46, Andrew Cooper wrote:
> On 26/06/2020 15:26, Jan Beulich wrote:
>> On 26.06.2020 15:59, Ross Lagerwall wrote:
>>> On 2020-06-26 13:24, Andrew Cooper wrote:
@@ -56,18 +57,48 @@ int arch_livepatch_safety_check(void)
return -EBUSY;
}
-int
On 26/06/2020 15:26, Jan Beulich wrote:
> On 26.06.2020 15:59, Ross Lagerwall wrote:
>> On 2020-06-26 13:24, Andrew Cooper wrote:
>>> @@ -56,18 +57,48 @@ int arch_livepatch_safety_check(void)
>>> return -EBUSY;
>>> }
>>>
>>> -int arch_livepatch_quiesce(void)
>>> +int noinline
On 26.06.2020 15:59, Ross Lagerwall wrote:
> On 2020-06-26 13:24, Andrew Cooper wrote:
>> @@ -56,18 +57,48 @@ int arch_livepatch_safety_check(void)
>> return -EBUSY;
>> }
>>
>> -int arch_livepatch_quiesce(void)
>> +int noinline arch_livepatch_quiesce(void)
>> {
>> +/* If Shadow Stacks
On 2020-06-26 13:24, Andrew Cooper wrote:
> Just like the alternatives infrastructure, the livepatch infrastructure
> disables CR0.WP to perform patching, which is not permitted with CET active.
>
> Modify arch_livepatch_{quiesce,revive}() to disable CET before disabling WP,
> and reset the dirty
> -Original Message-
> From: Jan Beulich
> Sent: 26 June 2020 14:15
> To: Andrew Cooper
> Cc: Xen-devel ; Wei Liu ; Roger
> Pau Monné
> ; Konrad Rzeszutek Wilk ; Ross
> Lagerwall
> ; Pawel Wieczorkiewicz ; Paul
> Durrant
> Subject: Re: [PATCH
On 26.06.2020 14:24, Andrew Cooper wrote:
> Just like the alternatives infrastructure, the livepatch infrastructure
> disables CR0.WP to perform patching, which is not permitted with CET active.
>
> Modify arch_livepatch_{quiesce,revive}() to disable CET before disabling WP,
> and reset the dirty
