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Re: [PATCH v2] linux-user/riscv: Add Zicboz extensions to hwprobe
From: |
Andrew Jones |
Subject: |
Re: [PATCH v2] linux-user/riscv: Add Zicboz extensions to hwprobe |
Date: |
Sun, 26 Nov 2023 11:01:50 +0100 |
On Fri, Nov 24, 2023 at 06:41:25PM +0100, Christoph Müllner wrote:
> On Fri, Nov 24, 2023 at 5:59 PM Andrew Jones <ajones@ventanamicro.com> wrote:
> >
> > On Thu, Nov 23, 2023 at 07:12:59PM +0100, Christoph Muellner wrote:
> > > From: Christoph Müllner <christoph.muellner@vrull.eu>
> > >
> > > Upstream Linux recently added RISC-V Zicboz support to the hwprobe API.
> > > This patch introduces this for QEMU's user space emulator.
> > >
> > > Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
> > > ---
> > > linux-user/syscall.c | 3 +++
> > > 1 file changed, 3 insertions(+)
> > >
> > > diff --git a/linux-user/syscall.c b/linux-user/syscall.c
> > > index 65ac3ac796..2f9a1c5279 100644
> > > --- a/linux-user/syscall.c
> > > +++ b/linux-user/syscall.c
> > > @@ -8799,6 +8799,7 @@ static int do_getdents64(abi_long dirfd, abi_long
> > > arg2, abi_long count)
> > > #define RISCV_HWPROBE_EXT_ZBA (1 << 3)
> > > #define RISCV_HWPROBE_EXT_ZBB (1 << 4)
> > > #define RISCV_HWPROBE_EXT_ZBS (1 << 5)
> > > +#define RISCV_HWPROBE_EXT_ZICBOZ (1 << 6)
> > >
> > > #define RISCV_HWPROBE_KEY_CPUPERF_0 5
> > > #define RISCV_HWPROBE_MISALIGNED_UNKNOWN (0 << 0)
> > > @@ -8855,6 +8856,8 @@ static void risc_hwprobe_fill_pairs(CPURISCVState
> > > *env,
> > > RISCV_HWPROBE_EXT_ZBB : 0;
> > > value |= cfg->ext_zbs ?
> > > RISCV_HWPROBE_EXT_ZBS : 0;
> > > + value |= cfg->ext_zicboz ?
> > > + RISCV_HWPROBE_EXT_ZICBOZ : 0;
> > > __put_user(value, &pair->value);
> > > break;
> > > case RISCV_HWPROBE_KEY_CPUPERF_0:
> > > --
> > > 2.41.0
> > >
> > >
> >
> > We should also add support for getting the block size with
> > RISCV_HWPROBE_KEY_ZICBOZ_BLOCK_SIZE.
>
> Hi Andrew, this is already upstream, just the EXT_ZICBOZ is missing:
Oh, thanks. In that case,
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
drew