[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen master] hvmloader: Remove minimum size for BARs to relocate to 64-bit space
commit 6392092e7e04b2c40145743ba1a078499210af9a Author: George Dunlap <george.dunlap@xxxxxxxxxxxxx> AuthorDate: Tue Jun 18 14:56:29 2013 +0100 Commit: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx> CommitDate: Mon Jun 24 12:20:29 2013 +0100 hvmloader: Remove minimum size for BARs to relocate to 64-bit space Allow devices with BARs less than 512MiB to be relocated to high memory. This will only be invoked if there is not enough low MMIO space to map the device, and will be done preferentially to large devices first; so in all likelihood only large devices will be remapped anyway. This is needed to work-around the issue of qemu-xen not being able to handle moving guest memory around to resize the MMIO hole. The default MMIO hole size is less than 256MiB. v3: - Fixed minor style issue Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx> Acked-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx> CC: Ian Campbell <ian.campbell@xxxxxxxxxx> CC: Hanweidong <hanweidong@xxxxxxxxxx> CC: Keir Fraser <keir@xxxxxxx> --- tools/firmware/hvmloader/config.h | 1 - tools/firmware/hvmloader/pci.c | 5 ++--- 2 files changed, 2 insertions(+), 4 deletions(-) diff --git a/tools/firmware/hvmloader/config.h b/tools/firmware/hvmloader/config.h index 8143d6f..6641197 100644 --- a/tools/firmware/hvmloader/config.h +++ b/tools/firmware/hvmloader/config.h @@ -55,7 +55,6 @@ extern struct bios_config ovmf_config; /* MMIO hole: Hardcoded defaults, which can be dynamically expanded. */ #define PCI_MEM_START 0xf0000000 #define PCI_MEM_END 0xfc000000 -#define PCI_MIN_BIG_BAR_SIZE 0x20000000 extern unsigned long pci_mem_start, pci_mem_end; diff --git a/tools/firmware/hvmloader/pci.c b/tools/firmware/hvmloader/pci.c index 68d4e44..9253b0b 100644 --- a/tools/firmware/hvmloader/pci.c +++ b/tools/firmware/hvmloader/pci.c @@ -295,9 +295,8 @@ void pci_setup(void) if ( (bar_data & PCI_BASE_ADDRESS_SPACE) == PCI_BASE_ADDRESS_SPACE_MEMORY ) { - /* Mapping high memory if PCI deivce is 64 bits bar and the bar size - is larger than 512M */ - if (using_64bar && (bar_sz > PCI_MIN_BIG_BAR_SIZE)) { + /* Mapping high memory if PCI device is 64 bits bar */ + if ( using_64bar ) { if ( high_mem_resource.base & (bar_sz - 1) ) high_mem_resource.base = high_mem_resource.base - (high_mem_resource.base & (bar_sz - 1)) + bar_sz; -- generated by git-patchbot for /home/xen/git/xen.git#master _______________________________________________ Xen-changelog mailing list Xen-changelog@xxxxxxxxxxxxx http://lists.xensource.com/xen-changelog
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