https://github.com/torvalds/linux
Revision 93cd0597649844a0fe7989839a3202735fb3ae67 authored by Arnd Bergmann on 04 December 2023, 08:47:01 UTC, committed by Juergen Gross on 21 December 2023, 07:30:25 UTC
Xen only supports modern CPUs even when running a 32-bit kernel, and it now requires a kernel built for a 64 byte (or larger) cache line: In file included from <command-line>: In function 'xen_vcpu_setup', inlined from 'xen_vcpu_setup_restore' at arch/x86/xen/enlighten.c:111:3, inlined from 'xen_vcpu_restore' at arch/x86/xen/enlighten.c:141:3: include/linux/compiler_types.h:435:45: error: call to '__compiletime_assert_287' declared with attribute error: BUILD_BUG_ON failed: sizeof(*vcpup) > SMP_CACHE_BYTES arch/x86/xen/enlighten.c:166:9: note: in expansion of macro 'BUILD_BUG_ON' 166 | BUILD_BUG_ON(sizeof(*vcpup) > SMP_CACHE_BYTES); | ^~~~~~~~~~~~ Enforce the dependency with a whitelist of CPU configurations. In normal distro kernels, CONFIG_X86_GENERIC is enabled, and this works fine. When this is not set, still allow Xen to be built on kernels that target a 64-bit capable CPU. Fixes: db2832309a82 ("x86/xen: fix percpu vcpu_info allocation") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Juergen Gross <jgross@suse.com> Tested-by: Alyssa Ross <hi@alyssa.is> Link: https://lore.kernel.org/r/20231204084722.3789473-1-arnd@kernel.org Signed-off-by: Juergen Gross <jgross@suse.com>
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Tip revision: 93cd0597649844a0fe7989839a3202735fb3ae67 authored by Arnd Bergmann on 04 December 2023, 08:47:01 UTC
x86/xen: add CPU dependencies for 32-bit build
x86/xen: add CPU dependencies for 32-bit build
Tip revision: 93cd059
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arch | ||
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certs | ||
crypto | ||
drivers | ||
fs | ||
include | ||
init | ||
io_uring | ||
ipc | ||
kernel | ||
lib | ||
mm | ||
net | ||
rust | ||
samples | ||
scripts | ||
security | ||
sound | ||
tools | ||
usr | ||
virt | ||
.clang-format | -rw-r--r-- | 20.1 KB |
.cocciconfig | -rw-r--r-- | 59 bytes |
.get_maintainer.ignore | -rw-r--r-- | 151 bytes |
.gitattributes | -rw-r--r-- | 105 bytes |
.gitignore | -rw-r--r-- | 2.0 KB |
.mailmap | -rw-r--r-- | 35.9 KB |
.rustfmt.toml | -rw-r--r-- | 369 bytes |
COPYING | -rw-r--r-- | 496 bytes |
CREDITS | -rw-r--r-- | 100.0 KB |
Kbuild | -rw-r--r-- | 2.5 KB |
Kconfig | -rw-r--r-- | 555 bytes |
MAINTAINERS | -rw-r--r-- | 716.8 KB |
Makefile | -rw-r--r-- | 65.7 KB |
README | -rw-r--r-- | 727 bytes |
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