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Re: [PATCH for-5.0] tcg/i386: Fix %r12 guest_base initialization
From: |
Alex Bennée |
Subject: |
Re: [PATCH for-5.0] tcg/i386: Fix %r12 guest_base initialization |
Date: |
Mon, 06 Apr 2020 19:13:26 +0100 |
User-agent: |
mu4e 1.3.10; emacs 28.0.50 |
Richard Henderson <address@hidden> writes:
> When %gs cannot be used, we use register offset addressing.
> This path is almost never used, so it was clearly not tested.
>
> Signed-off-by: Richard Henderson <address@hidden>
Reviewed-by: Alex Bennée <address@hidden>
Tested-by: Alex Bennée <address@hidden>
> ---
> tcg/i386/tcg-target.inc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tcg/i386/tcg-target.inc.c b/tcg/i386/tcg-target.inc.c
> index 7f61eeedd0..ec083bddcf 100644
> --- a/tcg/i386/tcg-target.inc.c
> +++ b/tcg/i386/tcg-target.inc.c
> @@ -3737,7 +3737,7 @@ static void tcg_target_qemu_prologue(TCGContext *s)
> } else {
> /* Choose R12 because, as a base, it requires a SIB byte. */
> x86_guest_base_index = TCG_REG_R12;
> - tcg_out_mov(s, TCG_TYPE_PTR, x86_guest_base_index, guest_base);
> + tcg_out_movi(s, TCG_TYPE_PTR, x86_guest_base_index, guest_base);
> tcg_regset_set_reg(s->reserved_regs, x86_guest_base_index);
> }
> }
--
Alex Bennée