| Message ID | 20230522105738.2378364-1-andrew.cooper3@citrix.com (mailing list archive) |
|---|---|
| State | Handled Elsewhere |
| Headers | show |
| Series | x86/apic: Fix use of X{,2}APIC_ENABLE in asm with older binutils | expand |
Hi, Please can you tell me what the relevance of this patch is to me, and thus why I'm included in the Cc list? I have never touched this file, not in its current path nor a previous path according to git. Thanks. On Mon, May 22, 2023 at 11:57:38AM +0100, Andrew Cooper wrote: > "x86/smpboot: Support parallel startup of secondary CPUs" adds the first use > of X2APIC_ENABLE in assembly, but older binutils don't tolerate the UL suffix. > > Switch to using BIT() instead. > > Fixes: 7e75178a0950 ("x86/smpboot: Support parallel startup of secondary CPUs") > Reported-by: Jeffrey Hugo <quic_jhugo@quicinc.com> > Tested-by: Jeffrey Hugo <quic_jhugo@quicinc.com> > Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> > --- > arch/x86/include/asm/apicdef.h | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/arch/x86/include/asm/apicdef.h b/arch/x86/include/asm/apicdef.h > index bf546dfb6e58..4b125e5b3187 100644 > --- a/arch/x86/include/asm/apicdef.h > +++ b/arch/x86/include/asm/apicdef.h > @@ -2,6 +2,8 @@ > #ifndef _ASM_X86_APICDEF_H > #define _ASM_X86_APICDEF_H > > +#include <linux/bits.h> > + > /* > * Constants for various Intel APICs. (local APIC, IOAPIC, etc.) > * > @@ -140,8 +142,8 @@ > #define APIC_BASE (fix_to_virt(FIX_APIC_BASE)) > #define APIC_BASE_MSR 0x800 > #define APIC_X2APIC_ID_MSR 0x802 > -#define XAPIC_ENABLE (1UL << 11) > -#define X2APIC_ENABLE (1UL << 10) > +#define XAPIC_ENABLE BIT(11) > +#define X2APIC_ENABLE BIT(10) > > #ifdef CONFIG_X86_32 > # define MAX_IO_APICS 64 > > base-commit: 0c7ffa32dbd6b09a87fea4ad1de8b27145dfd9a6 > -- > 2.30.2 > >
diff --git a/arch/x86/include/asm/apicdef.h b/arch/x86/include/asm/apicdef.h index bf546dfb6e58..4b125e5b3187 100644 --- a/arch/x86/include/asm/apicdef.h +++ b/arch/x86/include/asm/apicdef.h @@ -2,6 +2,8 @@ #ifndef _ASM_X86_APICDEF_H #define _ASM_X86_APICDEF_H +#include <linux/bits.h> + /* * Constants for various Intel APICs. (local APIC, IOAPIC, etc.) * @@ -140,8 +142,8 @@ #define APIC_BASE (fix_to_virt(FIX_APIC_BASE)) #define APIC_BASE_MSR 0x800 #define APIC_X2APIC_ID_MSR 0x802 -#define XAPIC_ENABLE (1UL << 11) -#define X2APIC_ENABLE (1UL << 10) +#define XAPIC_ENABLE BIT(11) +#define X2APIC_ENABLE BIT(10) #ifdef CONFIG_X86_32 # define MAX_IO_APICS 64
"x86/smpboot: Support parallel startup of secondary CPUs" adds the first use of X2APIC_ENABLE in assembly, but older binutils don't tolerate the UL suffix. Switch to using BIT() instead. Fixes: 7e75178a0950 ("x86/smpboot: Support parallel startup of secondary CPUs") Reported-by: Jeffrey Hugo <quic_jhugo@quicinc.com> Tested-by: Jeffrey Hugo <quic_jhugo@quicinc.com> Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> --- arch/x86/include/asm/apicdef.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) base-commit: 0c7ffa32dbd6b09a87fea4ad1de8b27145dfd9a6