similar to: [RFC] [PATCH] Split host arch headers for UML's benefit

With CONFIG_PARAVIRT, the kernel .text is littered with a bunch of calls to pv_irq_ops function pointers, like: callq *0xffffffff81e3a400 (pv_irq_ops.save_fl) In non-Xen paravirt environments -- including native, KVM, Hyper-V, and VMware -- the above code gets patched by native_patch() to look like this instead: pushfq pop %rax nopl 0x0(%rax,%rax,1) So in most scenarios,

The ALTERNATIVE() and ALTERNATIVE_2() macros are GNU assembler macros, which makes them quite inflexible for future changes. Convert them to preprocessor macros. Signed-off-by: Josh Poimboeuf <jpoimboe at redhat.com> --- arch/x86/entry/entry_32.S | 12 +++--- arch/x86/entry/entry_64.S | 10 ++--- arch/x86/entry/entry_64_compat.S | 8 ++--

Make paravirt_types.h more understandable: - Use more consistent and logical naming - Simplify interfaces - Put related macros together - Improve whitespace Signed-off-by: Josh Poimboeuf <jpoimboe at redhat.com> --- arch/x86/include/asm/paravirt_types.h | 104 ++++++++++++++++++---------------- 1 file changed, 54 insertions(+), 50 deletions(-) diff --git

Hi everyone, This is the long-awaited version two of the patches I previously posted in November last year: https://lore.kernel.org/lkml/20191108170120.22331-1-will at kernel.org/ I ended up parking the series while the READ_ONCE() implementation was being overhauled, but with that merged during the recent merge window and LTO patches being posted again [1], it was time for a refresh. The

Hi everyone, This is the long-awaited version two of the patches I previously posted in November last year: https://lore.kernel.org/lkml/20191108170120.22331-1-will at kernel.org/ I ended up parking the series while the READ_ONCE() implementation was being overhauled, but with that merged during the recent merge window and LTO patches being posted again [1], it was time for a refresh. The

Hi all, This is version three of the patches I previously posted here: v1: https://lore.kernel.org/lkml/20191108170120.22331-1-will at kernel.org/ v2: https://lore.kernel.org/r/20200630173734.14057-1-will at kernel.org Changes since v2 include: * Actually add the barrier in READ_ONCE() for Alpha! * Implement Alpha's smp_load_acquire() using __READ_ONCE(), rather than the other

Description: Use schedule_timeout_{,un}interruptible() instead of set_current_state()/schedule_timeout() to reduce kernel size. Also use helper functions to convert between human time units and jiffies rather than constant HZ division to avoid rounding errors. Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> --- fs/cifs/cifsfs.c | 7 ++----- fs/cifs/connect.c

Add some convenient segment macros to the kernel. This makes the rather obfuscated 'seg & 4' go away. Patch-keys: i386 segment cleanup Patch-base: 2.6.13-rc5-mm1 Signed-off-by: Zachary Amsden <zach@vmware.com> Index: linux-2.6.13/include/asm-i386/segment.h =================================================================== --- linux-2.6.13.orig/include/asm-i386/segment.h

Add some convenient segment macros to the kernel. This makes the rather obfuscated 'seg & 4' go away. Patch-keys: i386 segment cleanup Patch-base: 2.6.13-rc5-mm1 Signed-off-by: Zachary Amsden <zach@vmware.com> Index: linux-2.6.13/include/asm-i386/segment.h =================================================================== --- linux-2.6.13.orig/include/asm-i386/segment.h

Found yet another set of accessor functions for descriptors that really belongs in desc.h - move it there. Patch-base: 2.6.13-rc5-mm1 Patch-keys: i386 desc cleanup Signed-off-by: Zachary Amsden <zach@vmware.com> Index: linux-2.6.13/arch/i386/kernel/process.c =================================================================== --- linux-2.6.13.orig/arch/i386/kernel/process.c 2005-08-09

Found yet another set of accessor functions for descriptors that really belongs in desc.h - move it there. Patch-base: 2.6.13-rc5-mm1 Patch-keys: i386 desc cleanup Signed-off-by: Zachary Amsden <zach@vmware.com> Index: linux-2.6.13/arch/i386/kernel/process.c =================================================================== --- linux-2.6.13.orig/arch/i386/kernel/process.c 2005-08-09

This patch contains the following cleanups: - make needlessly global functions static - journal.c: remove the unused global function __journal_internal_check and move the check to journal_init - remove the following write-only global variable: - journal.c: current_journal - remove the following unneeded EXPORT_SYMBOL: - journal.c: journal_recover Signed-off-by: Adrian Bunk

This patch is based on Rusty's recent cleanup of the EFLAGS-related macros; it extends the same kind of cleanup to control registers and MSRs. It also unifies these between i386 and x86-64; at least with regards to MSRs, the two had definitely gotten out of sync. Signed-off-by: H. Peter Anvin <hpa@zytor.com> diff -urN --exclude='o.*' --exclude '*~'

This patch is based on Rusty's recent cleanup of the EFLAGS-related macros; it extends the same kind of cleanup to control registers and MSRs. It also unifies these between i386 and x86-64; at least with regards to MSRs, the two had definitely gotten out of sync. Signed-off-by: H. Peter Anvin <hpa@zytor.com> diff -urN --exclude='o.*' --exclude '*~'

[PATCH] Clean up x86 control register and MSR macros This patch is based on Rusty's recent cleanup of the EFLAGS-related macros; it extends the same kind of cleanup to control registers and MSRs. It also unifies these between i386 and x86-64; at least with regards to MSRs, the two had definitely gotten out of sync. Signed-off-by: H. Peter Anvin <hpa@zytor.com> diff -urN

[PATCH] Clean up x86 control register and MSR macros This patch is based on Rusty's recent cleanup of the EFLAGS-related macros; it extends the same kind of cleanup to control registers and MSRs. It also unifies these between i386 and x86-64; at least with regards to MSRs, the two had definitely gotten out of sync. Signed-off-by: H. Peter Anvin <hpa@zytor.com> diff -urN

This changes the pv ops code generation to more closely match reality. For example, instead of: callq *0xffffffff81e3a400 (pv_irq_ops.save_fl) vmlinux will now show: pushfq pop %rax nop nop nop nop nop which is what the runtime version of the code will show in most cases. This idea was suggested by Andy Lutomirski. The benefits are: - For the most common runtime cases

This changes the pv ops code generation to more closely match reality. For example, instead of: callq *0xffffffff81e3a400 (pv_irq_ops.save_fl) vmlinux will now show: pushfq pop %rax nop nop nop nop nop which is what the runtime version of the code will show in most cases. This idea was suggested by Andy Lutomirski. The benefits are: - For the most common runtime cases

BRIDGE_EBT_ARPREPLY=y and INET=n results in the following compile error: <-- snip --> ... LD .tmp_vmlinux1 net/built-in.o: In function `ebt_target_reply': ebt_arpreply.c:(.text+0x68fb9): undefined reference to `arp_send' make: *** [.tmp_vmlinux1] Error 1 <-- snip --> Signed-off-by: Adrian Bunk <bunk@stusta.de> ---