Linux 6.6.65

Linux 6.6.65

[Greg Kroah-Hartman]

I'm announcing the release of the 6.6.65 kernel.

This release only fixes a build regression for openrisc, and a runtime
regression for domU guests.  If you don't have problems with them, no
need to upgrade.

The updated 6.6.y git tree can be found at:
	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-6.6.y
and can be browsed at the normal kernel.org git web browser:
	https://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=summary

thanks,

greg k-h

------------

 Makefile                           |    2 +-
 arch/openrisc/include/asm/fixmap.h |   31 +------------------------------
 arch/x86/platform/pvh/head.S       |   22 +---------------------
 3 files changed, 3 insertions(+), 52 deletions(-)

Dawei Li (1):
      openrisc: Use asm-generic's version of fix_to_virt() & virt_to_fix()

Greg Kroah-Hartman (3):
      Revert "x86/pvh: Call C code via the kernel virtual mapping"
      Revert "x86/pvh: Set phys_base when calling xen_prepare_pvh()"
      Linux 6.6.65

Re: Linux 6.6.65

[Greg Kroah-Hartman]

diff --git a/Makefile b/Makefile
index 74f3867461a0..3eda4d12d924 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 6
 PATCHLEVEL = 6
-SUBLEVEL = 64
+SUBLEVEL = 65
 EXTRAVERSION =
 NAME = Pinguïn Aangedreven
 
diff --git a/arch/openrisc/include/asm/fixmap.h b/arch/openrisc/include/asm/fixmap.h
index aece6013fead..aaa6a26a3e92 100644
--- a/arch/openrisc/include/asm/fixmap.h
+++ b/arch/openrisc/include/asm/fixmap.h
@@ -39,35 +39,6 @@ enum fixed_addresses {
 extern void __set_fixmap(enum fixed_addresses idx,
 			 phys_addr_t phys, pgprot_t flags);
 
-#define __fix_to_virt(x)	(FIXADDR_TOP - ((x) << PAGE_SHIFT))
-#define __virt_to_fix(x)	((FIXADDR_TOP - ((x)&PAGE_MASK)) >> PAGE_SHIFT)
-
-/*
- * 'index to address' translation. If anyone tries to use the idx
- * directly without tranlation, we catch the bug with a NULL-deference
- * kernel oops. Illegal ranges of incoming indices are caught too.
- */
-static __always_inline unsigned long fix_to_virt(const unsigned int idx)
-{
-	/*
-	 * this branch gets completely eliminated after inlining,
-	 * except when someone tries to use fixaddr indices in an
-	 * illegal way. (such as mixing up address types or using
-	 * out-of-range indices).
-	 *
-	 * If it doesn't get removed, the linker will complain
-	 * loudly with a reasonably clear error message..
-	 */
-	if (idx >= __end_of_fixed_addresses)
-		BUG();
-
-	return __fix_to_virt(idx);
-}
-
-static inline unsigned long virt_to_fix(const unsigned long vaddr)
-{
-	BUG_ON(vaddr >= FIXADDR_TOP || vaddr < FIXADDR_START);
-	return __virt_to_fix(vaddr);
-}
+#include <asm-generic/fixmap.h>
 
 #endif
diff --git a/arch/x86/platform/pvh/head.S b/arch/x86/platform/pvh/head.S
index 008a80552224..c4365a05ab83 100644
--- a/arch/x86/platform/pvh/head.S
+++ b/arch/x86/platform/pvh/head.S
@@ -100,27 +100,7 @@ SYM_CODE_START_LOCAL(pvh_start_xen)
 	xor %edx, %edx
 	wrmsr
 
-	/*
-	 * Calculate load offset and store in phys_base.  __pa() needs
-	 * phys_base set to calculate the hypercall page in xen_pvh_init().
-	 */
-	movq %rbp, %rbx
-	subq $_pa(pvh_start_xen), %rbx
-	movq %rbx, phys_base(%rip)
-
-	/* Call xen_prepare_pvh() via the kernel virtual mapping */
-	leaq xen_prepare_pvh(%rip), %rax
-	subq phys_base(%rip), %rax
-	addq $__START_KERNEL_map, %rax
-	ANNOTATE_RETPOLINE_SAFE
-	call *%rax
-
-	/*
-	 * Clear phys_base.  __startup_64 will *add* to its value,
-	 * so reset to 0.
-	 */
-	xor  %rbx, %rbx
-	movq %rbx, phys_base(%rip)
+	call xen_prepare_pvh
 
 	/* startup_64 expects boot_params in %rsi. */
 	mov $_pa(pvh_bootparams), %rsi