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authorLinus Torvalds <torvalds@linux-foundation.org>2023-03-17 18:45:49 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2023-03-17 18:45:49 +0100
commit0eb392ec095ee29b932985deefb43e6d86d8a463 (patch)
tree778cd8e7313e867a2fce06a253ba706a2968f2c2 /arch/x86/xen
parentMerge tag 'riscv-for-linus-6.3-rc3' of git://git.kernel.org/pub/scm/linux/ker... (diff)
parentxen: remove unnecessary (void*) conversions (diff)
downloadlinux-0eb392ec095ee29b932985deefb43e6d86d8a463.tar.xz
linux-0eb392ec095ee29b932985deefb43e6d86d8a463.zip
Merge tag 'for-linus-6.3-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross: - cleanup for xen time handling - enable the VGA console in a Xen PVH dom0 - cleanup in the xenfs driver * tag 'for-linus-6.3-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen: remove unnecessary (void*) conversions x86/PVH: obtain VGA console info in Dom0 x86/xen/time: cleanup xen_tsc_safe_clocksource xen: update arch/x86/include/asm/xen/cpuid.h
Diffstat (limited to 'arch/x86/xen')
-rw-r--r--arch/x86/xen/Makefile2
-rw-r--r--arch/x86/xen/enlighten_pv.c3
-rw-r--r--arch/x86/xen/enlighten_pvh.c13
-rw-r--r--arch/x86/xen/time.c7
-rw-r--r--arch/x86/xen/vga.c5
-rw-r--r--arch/x86/xen/xen-ops.h7
6 files changed, 24 insertions, 13 deletions
diff --git a/arch/x86/xen/Makefile b/arch/x86/xen/Makefile
index 3c5b52fbe4a7..a9ec8c9f5c5d 100644
--- a/arch/x86/xen/Makefile
+++ b/arch/x86/xen/Makefile
@@ -45,6 +45,6 @@ obj-$(CONFIG_PARAVIRT_SPINLOCKS)+= spinlock.o
obj-$(CONFIG_XEN_DEBUG_FS) += debugfs.o
-obj-$(CONFIG_XEN_PV_DOM0) += vga.o
+obj-$(CONFIG_XEN_DOM0) += vga.o
obj-$(CONFIG_XEN_EFI) += efi.o
diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c
index bb59cc6ddb2d..093b78c8bbec 100644
--- a/arch/x86/xen/enlighten_pv.c
+++ b/arch/x86/xen/enlighten_pv.c
@@ -1390,7 +1390,8 @@ asmlinkage __visible void __init xen_start_kernel(struct start_info *si)
x86_platform.set_legacy_features =
xen_dom0_set_legacy_features;
- xen_init_vga(info, xen_start_info->console.dom0.info_size);
+ xen_init_vga(info, xen_start_info->console.dom0.info_size,
+ &boot_params.screen_info);
xen_start_info->console.domU.mfn = 0;
xen_start_info->console.domU.evtchn = 0;
diff --git a/arch/x86/xen/enlighten_pvh.c b/arch/x86/xen/enlighten_pvh.c
index bcae606bbc5c..1da44aca896c 100644
--- a/arch/x86/xen/enlighten_pvh.c
+++ b/arch/x86/xen/enlighten_pvh.c
@@ -43,6 +43,19 @@ void __init xen_pvh_init(struct boot_params *boot_params)
x86_init.oem.banner = xen_banner;
xen_efi_init(boot_params);
+
+ if (xen_initial_domain()) {
+ struct xen_platform_op op = {
+ .cmd = XENPF_get_dom0_console,
+ };
+ long ret = HYPERVISOR_platform_op(&op);
+
+ if (ret > 0)
+ xen_init_vga(&op.u.dom0_console,
+ min(ret * sizeof(char),
+ sizeof(op.u.dom0_console)),
+ &boot_params->screen_info);
+ }
}
void __init mem_map_via_hcall(struct boot_params *boot_params_p)
diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c
index 1d597364b49d..b74ac2562cfb 100644
--- a/arch/x86/xen/time.c
+++ b/arch/x86/xen/time.c
@@ -20,6 +20,7 @@
#include <asm/pvclock.h>
#include <asm/xen/hypervisor.h>
#include <asm/xen/hypercall.h>
+#include <asm/xen/cpuid.h>
#include <xen/events.h>
#include <xen/features.h>
@@ -503,11 +504,7 @@ static int __init xen_tsc_safe_clocksource(void)
/* Leaf 4, sub-leaf 0 (0x40000x03) */
cpuid_count(xen_cpuid_base() + 3, 0, &eax, &ebx, &ecx, &edx);
- /* tsc_mode = no_emulate (2) */
- if (ebx != 2)
- return 0;
-
- return 1;
+ return ebx == XEN_CPUID_TSC_MODE_NEVER_EMULATE;
}
static void __init xen_time_init(void)
diff --git a/arch/x86/xen/vga.c b/arch/x86/xen/vga.c
index 14ea32e734d5..d97adab8420f 100644
--- a/arch/x86/xen/vga.c
+++ b/arch/x86/xen/vga.c
@@ -9,10 +9,9 @@
#include "xen-ops.h"
-void __init xen_init_vga(const struct dom0_vga_console_info *info, size_t size)
+void __init xen_init_vga(const struct dom0_vga_console_info *info, size_t size,
+ struct screen_info *screen_info)
{
- struct screen_info *screen_info = &boot_params.screen_info;
-
/* This is drawn from a dump from vgacon:startup in
* standard Linux. */
screen_info->orig_video_mode = 3;
diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h
index 9a8bb972193d..a10903785a33 100644
--- a/arch/x86/xen/xen-ops.h
+++ b/arch/x86/xen/xen-ops.h
@@ -108,11 +108,12 @@ static inline void xen_uninit_lock_cpu(int cpu)
struct dom0_vga_console_info;
-#ifdef CONFIG_XEN_PV_DOM0
-void __init xen_init_vga(const struct dom0_vga_console_info *, size_t size);
+#ifdef CONFIG_XEN_DOM0
+void __init xen_init_vga(const struct dom0_vga_console_info *, size_t size,
+ struct screen_info *);
#else
static inline void __init xen_init_vga(const struct dom0_vga_console_info *info,
- size_t size)
+ size_t size, struct screen_info *si)
{
}
#endif