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Re: [Qemu-devel] [PATCH] configure: Define target access alignment in co
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [PATCH] configure: Define target access alignment in configure |
Date: |
Fri, 19 Jul 2019 17:08:57 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 |
On 19/07/19 11:17, Aleksandar Markovic wrote:
>
> On Jul 18, 2019 11:55 AM, "Paolo Bonzini" <address@hidden
> <mailto:address@hidden>> wrote:
>>
>> On 18/07/19 08:01, address@hidden <mailto:address@hidden> wrote:
>> > This patch moves the define of target access alignment earlier from
>> > target/foo/cpu.h to configure.
>> >
>> > Suggested in Richard Henderson's reply to "[PATCH 1/4] tcg: TCGMemOp
> is now
>> > accelerator independent MemOp"
>> >
>> > Signed-off-by: Tony Nguyen <address@hidden
> <mailto:address@hidden>>
>> > ---
>> > configure | 12 ++++++++++--
>> > include/exec/poison.h | 1 +
>> > include/qom/cpu.h | 2 +-
>> > target/alpha/cpu.h | 2 --
>> > target/hppa/cpu.h | 1 -
>> > target/mips/cpu.h | 2 --
>> > target/sh4/cpu.h | 2 --
>> > target/sparc/cpu.h | 2 --
>> > target/xtensa/cpu.h | 2 --
>> > tcg/tcg.c | 2 +-
>> > tcg/tcg.h | 8 +++++---
>> > 11 files changed, 18 insertions(+), 18 deletions(-)
>> >
>> > diff --git a/configure b/configure
>> > index eb635c3b9a..c07687c656 100755
>> > --- a/configure
>> > +++ b/configure
>> > @@ -7424,11 +7424,16 @@ for target in $target_list; do
>> > target_dir="$target"
>> > config_target_mak=$target_dir/config-target.mak
>> > target_name=$(echo $target | cut -d '-' -f 1)
>> > +target_aligned_only="no"
>> > +case "$target_name" in
>> > +
> alpha|hppa|mips64el|mips64|mipsel|mips|mipsn32|mipsn32el|sh4|sh4eb|sparc|sparc64|sparc32plus|xtensa|xtensaeb)
>> > + target_aligned_only="yes"
>> > + ;;
>> > +esac
>> > target_bigendian="no"
>> > -
>> > case "$target_name" in
>> >
> armeb|aarch64_be|hppa|lm32|m68k|microblaze|mips|mipsn32|mips64|moxie|or1k|ppc|ppc64|ppc64abi32|s390x|sh4eb|sparc|sparc64|sparc32plus|xtensaeb)
>> > - target_bigendian=yes
>> > + target_bigendian="yes"
>> > ;;
>> > esac
>> > target_softmmu="no"
>> > @@ -7710,6 +7715,9 @@ fi
>> > if supported_whpx_target $target; then
>> > echo "CONFIG_WHPX=y" >> $config_target_mak
>> > fi
>> > +if test "$target_aligned_only" = "yes" ; then
>> > + echo "TARGET_ALIGNED_ONLY=y" >> $config_target_mak
>> > +fi
>> > if test "$target_bigendian" = "yes" ; then
>> > echo "TARGET_WORDS_BIGENDIAN=y" >> $config_target_mak
>> > fi
>> > diff --git a/include/exec/poison.h b/include/exec/poison.h
>> > index b862320fa6..955eb863ab 100644
>> > --- a/include/exec/poison.h
>> > +++ b/include/exec/poison.h
>> > @@ -35,6 +35,7 @@
>> > #pragma GCC poison TARGET_UNICORE32
>> > #pragma GCC poison TARGET_XTENSA
>> >
>> > +#pragma GCC poison TARGET_ALIGNED_ONLY
>> > #pragma GCC poison TARGET_HAS_BFLT
>> > #pragma GCC poison TARGET_NAME
>> > #pragma GCC poison TARGET_SUPPORTS_MTTCG
>> > diff --git a/include/qom/cpu.h b/include/qom/cpu.h
>> > index 5ee0046b62..9b50b73339 100644
>> > --- a/include/qom/cpu.h
>> > +++ b/include/qom/cpu.h
>> > @@ -89,7 +89,7 @@ struct TranslationBlock;
>> > * @do_unassigned_access: Callback for unassigned access handling.
>> > * (this is deprecated: new targets should use
> do_transaction_failed instead)
>> > * @do_unaligned_access: Callback for unaligned access handling, if
>> > - * the target defines #ALIGNED_ONLY.
>> > + * the target defines #TARGET_ALIGNED_ONLY.
>> > * @do_transaction_failed: Callback for handling failed memory
> transactions
>> > * (ie bus faults or external aborts; not MMU faults)
>> > * @virtio_is_big_endian: Callback to return %true if a CPU which
> supports
>> > diff --git a/target/alpha/cpu.h b/target/alpha/cpu.h
>> > index b3e8a823e1..16eb8047cf 100644
>> > --- a/target/alpha/cpu.h
>> > +++ b/target/alpha/cpu.h
>> > @@ -23,8 +23,6 @@
>> > #include "cpu-qom.h"
>> > #include "exec/cpu-defs.h"
>> >
>> > -#define ALIGNED_ONLY
>> > -
>> > /* Alpha processors have a weak memory model */
>> > #define TCG_GUEST_DEFAULT_MO (0)
>> >
>> > diff --git a/target/hppa/cpu.h b/target/hppa/cpu.h
>> > index aab251bc4b..2be67c289a 100644
>> > --- a/target/hppa/cpu.h
>> > +++ b/target/hppa/cpu.h
>> > @@ -30,7 +30,6 @@
>> > basis. It's probably easier to fall back to a strong memory
> model. */
>> > #define TCG_GUEST_DEFAULT_MO TCG_MO_ALL
>> >
>> > -#define ALIGNED_ONLY
>> > #define MMU_KERNEL_IDX 0
>> > #define MMU_USER_IDX 3
>> > #define MMU_PHYS_IDX 4
>> > diff --git a/target/mips/cpu.h b/target/mips/cpu.h
>> > index 21c0615e02..c13cd4eb31 100644
>> > --- a/target/mips/cpu.h
>> > +++ b/target/mips/cpu.h
>> > @@ -1,8 +1,6 @@
>> > #ifndef MIPS_CPU_H
>> > #define MIPS_CPU_H
>> >
>> > -#define ALIGNED_ONLY
>> > -
>> > #include "cpu-qom.h"
>> > #include "exec/cpu-defs.h"
>> > #include "fpu/softfloat.h"
>> > diff --git a/target/sh4/cpu.h b/target/sh4/cpu.h
>> > index aee733eaaa..ecaa7a18a9 100644
>> > --- a/target/sh4/cpu.h
>> > +++ b/target/sh4/cpu.h
>> > @@ -23,8 +23,6 @@
>> > #include "cpu-qom.h"
>> > #include "exec/cpu-defs.h"
>> >
>> > -#define ALIGNED_ONLY
>> > -
>> > /* CPU Subtypes */
>> > #define SH_CPU_SH7750 (1 << 0)
>> > #define SH_CPU_SH7750S (1 << 1)
>> > diff --git a/target/sparc/cpu.h b/target/sparc/cpu.h
>> > index 8ed2250cd0..1406f0ba2e 100644
>> > --- a/target/sparc/cpu.h
>> > +++ b/target/sparc/cpu.h
>> > @@ -5,8 +5,6 @@
>> > #include "cpu-qom.h"
>> > #include "exec/cpu-defs.h"
>> >
>> > -#define ALIGNED_ONLY
>> > -
>> > #if !defined(TARGET_SPARC64)
>> > #define TARGET_DPREGS 16
>> > #else
>> > diff --git a/target/xtensa/cpu.h b/target/xtensa/cpu.h
>> > index 2c277134f1..0459243e6b 100644
>> > --- a/target/xtensa/cpu.h
>> > +++ b/target/xtensa/cpu.h
>> > @@ -32,8 +32,6 @@
>> > #include "exec/cpu-defs.h"
>> > #include "xtensa-isa.h"
>> >
>> > -#define ALIGNED_ONLY
>> > -
>> > /* Xtensa processors have a weak memory model */
>> > #define TCG_GUEST_DEFAULT_MO (0)
>> >
>> > diff --git a/tcg/tcg.c b/tcg/tcg.c
>> > index be2c33c400..8d23fb0592 100644
>> > --- a/tcg/tcg.c
>> > +++ b/tcg/tcg.c
>> > @@ -1926,7 +1926,7 @@ static const char * const ldst_name[] =
>> > };
>> >
>> > static const char * const alignment_name[(MO_AMASK >> MO_ASHIFT) +
> 1] = {
>> > -#ifdef ALIGNED_ONLY
>> > +#ifdef TARGET_ALIGNED_ONLY
>> > [MO_UNALN >> MO_ASHIFT] = "un+",
>> > [MO_ALIGN >> MO_ASHIFT] = "",
>> > #else
>> > diff --git a/tcg/tcg.h b/tcg/tcg.h
>> > index b411e17a28..529acb2ed8 100644
>> > --- a/tcg/tcg.h
>> > +++ b/tcg/tcg.h
>> > @@ -333,10 +333,12 @@ typedef enum TCGMemOp {
>> > MO_TE = MO_LE,
>> > #endif
>> >
>> > - /* MO_UNALN accesses are never checked for alignment.
>> > + /*
>> > + * MO_UNALN accesses are never checked for alignment.
>> > * MO_ALIGN accesses will result in a call to the CPU's
>> > * do_unaligned_access hook if the guest address is not aligned.
>> > - * The default depends on whether the target CPU defines
> ALIGNED_ONLY.
>> > + * The default depends on whether the target CPU defines
>> > + * TARGET_ALIGNED_ONLY.
>> > *
>> > * Some architectures (e.g. ARMv8) need the address which is
> aligned
>> > * to a size more than the size of the memory access.
>> > @@ -353,7 +355,7 @@ typedef enum TCGMemOp {
>> > */
>> > MO_ASHIFT = 4,
>> > MO_AMASK = 7 << MO_ASHIFT,
>> > -#ifdef ALIGNED_ONLY
>> > +#ifdef TARGET_ALIGNED_ONLY
>> > MO_ALIGN = 0,
>> > MO_UNALN = MO_AMASK,
>> > #else
>> >
>>
>> Queued for 4.2, thanks.
>>
>
> Paolo, your queueing was premature, just hours after the submission,
> practically not allowing review to happen.
>
> Please have some time cushion, and especially for the changes that
> affect multiple targets.
It's for 4.2, so there's weeks before the queuing transforms into a pull
request.
Paolo
- [Qemu-devel] [PATCH] configure: Define target access alignment in configure, tony.nguyen, 2019/07/18
- Re: [Qemu-devel] [PATCH] configure: Define target access alignment in configure, Philippe Mathieu-Daudé, 2019/07/18
- Re: [Qemu-devel] [PATCH] configure: Define target access alignment in configure, Paolo Bonzini, 2019/07/18
- Re: [Qemu-devel] [PATCH] configure: Define target access alignment in configure, Richard Henderson, 2019/07/18
- Re: [Qemu-devel] [PATCH] configure: Define target access alignment in configure, Aleksandar Markovic, 2019/07/19
- Re: [Qemu-devel] [PATCH] configure: Define target access alignment in configure, Aleksandar Markovic, 2019/07/19
- Re: [Qemu-devel] [PATCH] configure: Define target access alignment in configure, Aleksandar Markovic, 2019/07/19