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/video/omapvrfb.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/video/omapvrfb.h')
| -rw-r--r-- | include/video/omapvrfb.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/include/video/omapvrfb.h b/include/video/omapvrfb.h new file mode 100644 index 000000000..9741e77f1 --- /dev/null +++ b/include/video/omapvrfb.h @@ -0,0 +1,56 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * VRFB Rotation Engine + * + * Copyright (C) 2009 Nokia Corporation + * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com> + */ + +#ifndef __OMAP_VRFB_H__ +#define __OMAP_VRFB_H__ + +#define OMAP_VRFB_LINE_LEN 2048 + +struct vrfb { + u8 context; + void __iomem *vaddr[4]; + unsigned long paddr[4]; + u16 xres; + u16 yres; + u16 xoffset; + u16 yoffset; + u8 bytespp; + bool yuv_mode; +}; + +#ifdef CONFIG_OMAP2_VRFB +extern bool omap_vrfb_supported(void); +extern int omap_vrfb_request_ctx(struct vrfb *vrfb); +extern void omap_vrfb_release_ctx(struct vrfb *vrfb); +extern void omap_vrfb_adjust_size(u16 *width, u16 *height, + u8 bytespp); +extern u32 omap_vrfb_min_phys_size(u16 width, u16 height, u8 bytespp); +extern u16 omap_vrfb_max_height(u32 phys_size, u16 width, u8 bytespp); +extern void omap_vrfb_setup(struct vrfb *vrfb, unsigned long paddr, + u16 width, u16 height, + unsigned bytespp, bool yuv_mode); +extern int omap_vrfb_map_angle(struct vrfb *vrfb, u16 height, u8 rot); +extern void omap_vrfb_restore_context(void); + +#else +static inline bool omap_vrfb_supported(void) { return false; } +static inline int omap_vrfb_request_ctx(struct vrfb *vrfb) { return 0; } +static inline void omap_vrfb_release_ctx(struct vrfb *vrfb) {} +static inline void omap_vrfb_adjust_size(u16 *width, u16 *height, + u8 bytespp) {} +static inline u32 omap_vrfb_min_phys_size(u16 width, u16 height, u8 bytespp) + { return 0; } +static inline u16 omap_vrfb_max_height(u32 phys_size, u16 width, u8 bytespp) + { return 0; } +static inline void omap_vrfb_setup(struct vrfb *vrfb, unsigned long paddr, + u16 width, u16 height, unsigned bytespp, bool yuv_mode) {} +static inline int omap_vrfb_map_angle(struct vrfb *vrfb, u16 height, u8 rot) + { return 0; } +static inline void omap_vrfb_restore_context(void) {} +#endif +#endif /* __VRFB_H */ |