qemu-devel.nongnu.org archive mirror
 help / color / mirror / Atom feed
From: "Nicholas Piggin" <npiggin@gmail.com>
To: "Harsh Prateek Bora" <harshpb@linux.ibm.com>,
	<qemu-ppc@nongnu.org>, <qemu-devel@nongnu.org>
Cc: <balaton@eik.bme.hu>, <danielhb413@gmail.com>
Subject: Re: [PATCH v2 1/7] target/ppc: use locally stored msr and avoid indirect access
Date: Thu, 04 Jul 2024 17:36:59 +1000	[thread overview]
Message-ID: <D2GKZCUQCJC2.2PUUC0GX1ZB83@gmail.com> (raw)
In-Reply-To: <20240523051412.226970-2-harshpb@linux.ibm.com>

On Thu May 23, 2024 at 3:14 PM AEST, Harsh Prateek Bora wrote:
> hreg_compute_hflags_value already stores msr locally to be used in most
> of the logic in the routine however some instances are still using
> env->msr which is unnecessary. Use locally stored value as available.
>
> Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>

Reviewed-by: Nicholas Piggin <npiggin@gmail.com>

> ---
>  target/ppc/helper_regs.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/target/ppc/helper_regs.c b/target/ppc/helper_regs.c
> index 25258986e3..945fa1a596 100644
> --- a/target/ppc/helper_regs.c
> +++ b/target/ppc/helper_regs.c
> @@ -106,10 +106,10 @@ static uint32_t hreg_compute_hflags_value(CPUPPCState *env)
>  
>      if (ppc_flags & POWERPC_FLAG_DE) {
>          target_ulong dbcr0 = env->spr[SPR_BOOKE_DBCR0];
> -        if ((dbcr0 & DBCR0_ICMP) && FIELD_EX64(env->msr, MSR, DE)) {
> +        if ((dbcr0 & DBCR0_ICMP) && FIELD_EX64(msr, MSR, DE)) {
>              hflags |= 1 << HFLAGS_SE;
>          }
> -        if ((dbcr0 & DBCR0_BRT) && FIELD_EX64(env->msr, MSR, DE)) {
> +        if ((dbcr0 & DBCR0_BRT) && FIELD_EX64(msr, MSR, DE)) {
>              hflags |= 1 << HFLAGS_BE;
>          }
>      } else {



  reply	other threads:[~2024-07-04  7:38 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-05-23  5:14 [PATCH v2 0/7] target/ppc: misc ppc improvements/optimizations Harsh Prateek Bora
2024-05-23  5:14 ` [PATCH v2 1/7] target/ppc: use locally stored msr and avoid indirect access Harsh Prateek Bora
2024-07-04  7:36   ` Nicholas Piggin [this message]
2024-07-04  7:42   ` Nicholas Piggin
2024-05-23  5:14 ` [PATCH v2 2/7] target/ppc: optimize hreg_compute_pmu_hflags_value Harsh Prateek Bora
2024-07-04  7:37   ` Nicholas Piggin
2024-05-23  5:14 ` [PATCH v2 3/7] " Harsh Prateek Bora
2024-07-04  7:38   ` Nicholas Piggin
2024-05-23  5:14 ` [PATCH v2 4/7] target/ppc: optimize p9 exception handling routines Harsh Prateek Bora
2024-07-04  7:40   ` Nicholas Piggin
2024-05-23  5:14 ` [PATCH v2 5/7] target/ppc: optimize p9 exception handling routines for lpcr Harsh Prateek Bora
2024-07-04  7:43   ` Nicholas Piggin
2024-09-13  4:18     ` Harsh Prateek Bora
2024-05-23  5:14 ` [PATCH v2 6/7] target/ppc: reduce duplicate code between init_proc_POWER{9, 10} Harsh Prateek Bora
2024-05-23  5:14 ` [PATCH v2 7/7] target/ppc: redue code duplication across Power9/10 init code Harsh Prateek Bora
2024-07-04  7:49   ` Nicholas Piggin

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=D2GKZCUQCJC2.2PUUC0GX1ZB83@gmail.com \
    --to=npiggin@gmail.com \
    --cc=balaton@eik.bme.hu \
    --cc=danielhb413@gmail.com \
    --cc=harshpb@linux.ibm.com \
    --cc=qemu-devel@nongnu.org \
    --cc=qemu-ppc@nongnu.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).