summaryrefslogtreecommitdiffstats
path: root/include/asm-i386/irqflags.h
AgeCommit message (Collapse)Author
2007-05-02[PATCH] i386: Use X86_EFLAGS_IF in irqflags.h.Andi Kleen
Move X86_EFLAGS_IF et al out to a new header: processor-flags.h, so we can include it from irqflags.h and use it in raw_irqs_disabled_flags(). As a side-effect, we could now use these flags in .S files. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andi Kleen <ak@suse.de>
2007-05-02[PATCH] i386: rationalize paravirt wrappersRusty Russell
paravirt.c used to implement native versions of all low-level functions. Far cleaner is to have the native versions exposed in the headers and as inline native_XXX, and if !CONFIG_PARAVIRT, then simply #define XXX native_XXX. There are several nice side effects: 1) write_dt_entry() now takes the correct "struct Xgt_desc_struct *" not "void *". 2) load_TLS is reintroduced to the for loop, not manually unrolled with a #error in case the bounds ever change. 3) Macros become inlines, with type checking. 4) Access to the native versions is trivial for KVM, lguest, Xen and others who might want it. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@muc.de> Cc: Avi Kivity <avi@qumranet.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2006-12-07[PATCH] paravirt: Patch inline replacements for paravirt interceptsRusty Russell
It turns out that the most called ops, by several orders of magnitude, are the interrupt manipulation ops. These are obvious candidates for patching, so mark them up and create infrastructure for it. The method used is that the ops structure has a patch function, which is called for each place which needs to be patched: this returns a number of instructions (the rest are NOP-padded). Usually we can spare a register (%eax) for the binary patched code to use, but in a couple of critical places in entry.S we can't: we make the clobbers explicit at the call site, and manually clobber the allowed registers in debug mode as an extra check. And: Don't abuse CONFIG_DEBUG_KERNEL, add CONFIG_DEBUG_PARAVIRT. And: AK: Fix warnings in x86-64 alternative.c build And: AK: Fix compilation with defconfig And: ^From: Andrew Morton <akpm@osdl.org> Some binutlises still like to emit references to __stop_parainstructions and __start_parainstructions. And: AK: Fix warnings about unused variables when PARAVIRT is disabled. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Zachary Amsden <zach@vmware.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org>
2006-12-07[PATCH] paravirt: header and stubs for paravirtualisationRusty Russell
Create a paravirt.h header for all the critical operations which need to be replaced with hypervisor calls, and include that instead of defining native operations, when CONFIG_PARAVIRT. This patch does the dumbest possible replacement of paravirtualized instructions: calls through a "paravirt_ops" structure. Currently these are function implementations of native hardware: hypervisors will override the ops structure with their own variants. All the pv-ops functions are declared "fastcall" so that a specific register-based ABI is used, to make inlining assember easier. And: +From: Andy Whitcroft <apw@shadowen.org> The paravirt ops introduce a 'weak' attribute onto memory_setup(). Code ordering leads to the following warnings on x86: arch/i386/kernel/setup.c:651: warning: weak declaration of `memory_setup' after first use results in unspecified behavior Move memory_setup() to avoid this. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Zachary Amsden <zach@vmware.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Andy Whitcroft <apw@shadowen.org>
2006-07-03[PATCH] lockdep: irqtrace cleanup of include/asm-i386/irqflags.hIngo Molnar
Clean up the x86 irqflags.h file: - macro => inline function transformation - simplifications - style fixes Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-03[PATCH] lockdep: irqtrace subsystem, i386 supportIngo Molnar
Add irqflags-tracing support to i386. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>