| Message ID | 20200114210921.11216-2-richard.henderson@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | linux-user: Implement x86_64 vsyscalls | expand |
On 1/14/20 10:09 PM, Richard Henderson wrote: > We are not short of numbers for EXCP_*. There is no need to confuse things > by having EXCP_VMEXIT and EXCP_SYSCALL overlap, even though the former is > only used for system mode and the latter is only used for user mode. > > Signed-off-by: Richard Henderson <richard.henderson@linaro.org> > --- > target/i386/cpu.h | 5 ++--- > 1 file changed, 2 insertions(+), 3 deletions(-) > > diff --git a/target/i386/cpu.h b/target/i386/cpu.h > index 594326a794..164d038d1f 100644 > --- a/target/i386/cpu.h > +++ b/target/i386/cpu.h > @@ -998,9 +998,8 @@ typedef uint64_t FeatureWordArray[FEATURE_WORDS]; > #define EXCP11_ALGN 17 > #define EXCP12_MCHK 18 > > -#define EXCP_SYSCALL 0x100 /* only happens in user only emulation > - for syscall instruction */ > -#define EXCP_VMEXIT 0x100 > +#define EXCP_VMEXIT 0x100 /* only for system emulation */ > +#define EXCP_SYSCALL 0x101 /* only for user emulation */ > > /* i386-specific interrupt pending bits. */ > #define CPU_INTERRUPT_POLL CPU_INTERRUPT_TGT_EXT_1 > Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Richard Henderson <richard.henderson@linaro.org> writes: > We are not short of numbers for EXCP_*. There is no need to confuse things > by having EXCP_VMEXIT and EXCP_SYSCALL overlap, even though the former is > only used for system mode and the latter is only used for user mode. > > Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> > --- > target/i386/cpu.h | 5 ++--- > 1 file changed, 2 insertions(+), 3 deletions(-) > > diff --git a/target/i386/cpu.h b/target/i386/cpu.h > index 594326a794..164d038d1f 100644 > --- a/target/i386/cpu.h > +++ b/target/i386/cpu.h > @@ -998,9 +998,8 @@ typedef uint64_t FeatureWordArray[FEATURE_WORDS]; > #define EXCP11_ALGN 17 > #define EXCP12_MCHK 18 > > -#define EXCP_SYSCALL 0x100 /* only happens in user only emulation > - for syscall instruction */ > -#define EXCP_VMEXIT 0x100 > +#define EXCP_VMEXIT 0x100 /* only for system emulation */ > +#define EXCP_SYSCALL 0x101 /* only for user emulation */ > > /* i386-specific interrupt pending bits. */ > #define CPU_INTERRUPT_POLL CPU_INTERRUPT_TGT_EXT_1
diff --git a/target/i386/cpu.h b/target/i386/cpu.h index 594326a794..164d038d1f 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -998,9 +998,8 @@ typedef uint64_t FeatureWordArray[FEATURE_WORDS]; #define EXCP11_ALGN 17 #define EXCP12_MCHK 18 -#define EXCP_SYSCALL 0x100 /* only happens in user only emulation - for syscall instruction */ -#define EXCP_VMEXIT 0x100 +#define EXCP_VMEXIT 0x100 /* only for system emulation */ +#define EXCP_SYSCALL 0x101 /* only for user emulation */ /* i386-specific interrupt pending bits. */ #define CPU_INTERRUPT_POLL CPU_INTERRUPT_TGT_EXT_1
We are not short of numbers for EXCP_*. There is no need to confuse things by having EXCP_VMEXIT and EXCP_SYSCALL overlap, even though the former is only used for system mode and the latter is only used for user mode. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- target/i386/cpu.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)