diff options
| author | Zeng Chi <zengchi@kylinos.cn> | 2026-09-21 18:24:42 +0800 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2026-09-22 08:36:16 -0700 |
| commit | 119e9db233ad0f4cbd4cfb9f9385a7bca378b37d (patch) | |
| tree | 660d50d4139cb750fbde1ae3432452c20726c99d /include/xen/hvc-console.h | |
| download | linux-stable-119e9db233ad0f4cbd4cfb9f9385a7bca378b37d.tar.gz linux-stable-119e9db233ad0f4cbd4cfb9f9385a7bca378b37d.zip | |
KVM: Don't pre-reserve xarray entries when storing empty/NULL attributesgrafted
Skip the xarray reservation loop when clearing all memory attributes, as
storing NULL only erases the entry and never needs to allocate, so no
reservation (and no cleanup of a failed one) is required in that case.
Suggested-by: Sean Christopherson <seanjc@google.com>
Cc: David Ballesteros <davimaba.v@proton.me>
Signed-off-by: Zeng Chi <zengchi@kylinos.cn>
Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com
[sean: split to separate patch]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'include/xen/hvc-console.h')
| -rw-r--r-- | include/xen/hvc-console.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/xen/hvc-console.h b/include/xen/hvc-console.h new file mode 100644 index 000000000..d8949d5e2 --- /dev/null +++ b/include/xen/hvc-console.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef XEN_HVC_CONSOLE_H +#define XEN_HVC_CONSOLE_H + +extern struct console xenboot_console; + +#ifdef CONFIG_HVC_XEN +void xen_console_resume(void); +void xen_raw_console_write(const char *str); +__printf(1, 2) +void xen_raw_printk(const char *fmt, ...); +#else +static inline void xen_console_resume(void) { } +static inline void xen_raw_console_write(const char *str) { } +static inline __printf(1, 2) +void xen_raw_printk(const char *fmt, ...) { } +#endif + +#endif /* XEN_HVC_CONSOLE_H */ |