Re: [PATCH] riscv: vector: Check SR_SD before saving vstate

[Palmer Dabbelt]

On Thu, 11 Jan 2024 07:16:06 PST (-0800), andy.chiu@xxxxxxxxxx wrote:
> Hi Palmer,
>
> On Thu, Jan 11, 2024 at 10:50 PM <patchwork-bot+linux-riscv@xxxxxxxxxx> wrote:
> > Hello:
> >
> > This patch was applied to riscv/linux.git (for-next)
>
> IIUC the conclusion for this thread is not to check SD bit for either
> vector or fpu. The patch for this was sent together with the
> kernel-mode vector series and has been reviewed-by both Song and Guo.
>
> > by Palmer Dabbelt <palmer@xxxxxxxxxxxx>:
> >
> > On Thu, 21 Dec 2023 15:04:49 +0800 you wrote:
> > > The SD bit summarizes the dirty states of FS, VS, or XS fields,
> > > providing a "fast check" before saving fstate or vstate.
> > >
> > > Let __switch_to_vector() check SD bit as __switch_to_fpu() does.
> > >
> > > Fixes: 3a2df6323def ("riscv: Add task switch support for vector")
> > > Signed-off-by: Song Shuai <songshuaishuai@xxxxxxxxxxx>
> > >
> > > [...]
> >
> > Here is the summary with links:
> >   - riscv: vector: Check SR_SD before saving vstate
> >     https://git.kernel.org/riscv/c/e1b76bc00ed1
> >
> > You are awesome, thank you!
> > --
> > Deet-doot-dot, I am a bot.
> > https://korg.docs.kernel.org/patchwork/pwbot.html
>
> Please let me know if I missed anything.

Sorry, I must have misunderstood.  I'm dropping it.