On Feb 8, 2021, at 04:33, Borislav Petkov wrote:
> On Wed, Dec 23, 2020 at 07:57:06AM -0800, Chang S. Bae wrote:
>> copy_xregs_to_kernel() used to save all user states in a kernel buffer.
>> When the dynamic user state is enabled, it becomes conditional which state
>> to be saved.
>>
>>
On Wed, Dec 23, 2020 at 07:57:06AM -0800, Chang S. Bae wrote:
> copy_xregs_to_kernel() used to save all user states in a kernel buffer.
> When the dynamic user state is enabled, it becomes conditional which state
> to be saved.
>
> fpu->state_mask can indicate which state components are reserved
On 1/15/2021 12:59 PM, Bae, Chang Seok wrote:
On Jan 11, 2021, at 18:52, Liu, Jing2 wrote:
On 1/8/2021 2:40 AM, Bae, Chang Seok wrote:
On Jan 7, 2021, at 17:41, Liu, Jing2 wrote:
static void kvm_save_current_fpu(struct fpu *fpu) {
+ struct fpu *src_fpu = >thread.fpu;
+
/*
> On Jan 11, 2021, at 18:52, Liu, Jing2 wrote:
>
> On 1/8/2021 2:40 AM, Bae, Chang Seok wrote:
>>> On Jan 7, 2021, at 17:41, Liu, Jing2 wrote:
>>>
>>> static void kvm_save_current_fpu(struct fpu *fpu) {
>>> + struct fpu *src_fpu = >thread.fpu;
>>> +
>>> /*
>>> * If the target FPU
On 1/8/2021 2:40 AM, Bae, Chang Seok wrote:
On Jan 7, 2021, at 17:41, Liu, Jing2 wrote:
static void kvm_save_current_fpu(struct fpu *fpu) {
+ struct fpu *src_fpu = >thread.fpu;
+
/*
* If the target FPU state is not resident in the CPU registers, just
*
> On Jan 7, 2021, at 17:41, Liu, Jing2 wrote:
>
> static void kvm_save_current_fpu(struct fpu *fpu) {
> + struct fpu *src_fpu = >thread.fpu;
> +
> /*
>* If the target FPU state is not resident in the CPU registers, just
>* memcpy() from current, else save CPU state
;
k...@vger.kernel.org
Subject: [PATCH v3 10/21] x86/fpu/xstate: Update xstate save function to
support dynamic xstate
copy_xregs_to_kernel() used to save all user states in a kernel buffer.
When the dynamic user state is enabled, it becomes conditional which state to
be saved.
fpu->state_m
copy_xregs_to_kernel() used to save all user states in a kernel buffer.
When the dynamic user state is enabled, it becomes conditional which state
to be saved.
fpu->state_mask can indicate which state components are reserved to be
saved in XSAVE buffer. Use it as XSAVE's instruction mask to
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