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Date: Wed, 28 Mar 2007 23:10:29 -0600 From: ebiederm@...ssion.com (Eric W. Biederman) To: "Yinghai Lu" <yinghai.lu@....com> Cc: "Andrew Morton" <akpm@...ux-foundation.org>, "Linus Torvalds" <torvalds@...ux-foundation.org>, linux-kernel@...r.kernel.org, "Ingo Molnar" <mingo@...e.hu>, "Andi Kleen" <ak@...e.de> Subject: Re: [PATCH] x86_64 irq: keep consistent for changing IRQ0_VECTOR from 0x20 to 0x30 "Yinghai Lu" <yinghai.lu@....com> writes: > On 3/7/07, Eric W. Biederman <ebiederm@...ssion.com> wrote: >> The comment fixes or some variation on them are needed. > > Please check the patch about comment. > > YH > Looks good to me. I've cleaned up the description and placed the patch inline for easier consumption. Everything this patch touches is a comment. So it is as safe as they come. And the patch appears to apply to the Linus's latest tree. --- From: Yinghai Lu <yinghai.lu@....com> Subject: x86_64 irq: Fix comments after changing IRQ0_VECTOR from 0x20 to 0x30 Signed-off-by: "Eric W. Biederman" <ebiederm@...ssion.com> Signed-off-by: Yinghai Lu <yinghai.lu@....com> diff --git a/arch/x86_64/kernel/i8259.c b/arch/x86_64/kernel/i8259.c index 21d95b7..4894266 100644 --- a/arch/x86_64/kernel/i8259.c +++ b/arch/x86_64/kernel/i8259.c @@ -45,7 +45,7 @@ /* * ISA PIC or low IO-APIC triggered (INTA-cycle or APIC) interrupts: - * (these are usually mapped to vectors 0x20-0x2f) + * (these are usually mapped to vectors 0x30-0x3f) */ /* @@ -299,7 +299,7 @@ void init_8259A(int auto_eoi) * outb_p - this has to work on a wide range of PC hardware. */ outb_p(0x11, 0x20); /* ICW1: select 8259A-1 init */ - outb_p(IRQ0_VECTOR, 0x21); /* ICW2: 8259A-1 IR0-7 mapped to 0x20-0x27 */ + outb_p(IRQ0_VECTOR, 0x21); /* ICW2: 8259A-1 IR0-7 mapped to 0x30-0x37 */ outb_p(0x04, 0x21); /* 8259A-1 (the master) has a slave on IR2 */ if (auto_eoi) outb_p(0x03, 0x21); /* master does Auto EOI */ @@ -307,7 +307,7 @@ void init_8259A(int auto_eoi) outb_p(0x01, 0x21); /* master expects normal EOI */ outb_p(0x11, 0xA0); /* ICW1: select 8259A-2 init */ - outb_p(IRQ8_VECTOR, 0xA1); /* ICW2: 8259A-2 IR0-7 mapped to 0x28-0x2f */ + outb_p(IRQ8_VECTOR, 0xA1); /* ICW2: 8259A-2 IR0-7 mapped to 0x38-0x3f */ outb_p(0x02, 0xA1); /* 8259A-2 is a slave on master's IR2 */ outb_p(0x01, 0xA1); /* (slave's support for AEOI in flat mode is to be investigated) */ diff --git a/include/asm-x86_64/hw_irq.h b/include/asm-x86_64/hw_irq.h index 2e4b7a5..6153ae5 100644 --- a/include/asm-x86_64/hw_irq.h +++ b/include/asm-x86_64/hw_irq.h @@ -38,7 +38,7 @@ #define IRQ_MOVE_CLEANUP_VECTOR FIRST_EXTERNAL_VECTOR /* - * Vectors 0x20-0x2f are used for ISA interrupts. + * Vectors 0x30-0x3f are used for ISA interrupts. */ #define IRQ0_VECTOR FIRST_EXTERNAL_VECTOR + 0x10 #define IRQ1_VECTOR IRQ0_VECTOR + 1 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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